Battery and electric equipment

Abstract

The utility model provides a battery and electric equipment, and relates to the technical field of new energy, the battery comprises: a plurality of battery cells arranged side by side along a first direction, one end of each battery cell along a second direction is provided with an edge sealing structure; the protection plate is arranged at the ends, provided with the edge sealing structures, of the battery cells and is electrically connected with the battery cells, and an avoiding structure for avoiding the edge sealing structures is arranged on the protection plate; and the glue injection structure at least covers one end, provided with the protection plate, of the battery cell and at least part of the structure of the protection plate. According to the battery disclosed by the utility model, the protection plate can be effectively and vertically placed, and the avoiding structure on the protection plate can avoid the edge sealing structure at the end part of the battery, so that the size of the battery along the second direction is reduced, the space utilization rate of the battery is favorably improved, and the unit volume capacity and the energy density of the battery are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to a battery and an electrical device. Background Art

[0002] As electronic products and other electrical equipment become more intelligent, their power is increasing. In order to meet the power requirements of electronic products, it is necessary to increase the battery power as much as possible while ensuring the battery capacity. At present, the power of soft-pack batteries is mainly increased by increasing the number of cells.

[0003] However, in the current dual-cell battery structure, when the protective plate is placed vertically, the top sealing edges of the two side-by-side cells will interfere with the protective plate, resulting in a larger volume of the packaged battery and failing to fully improve the space utilization of the battery. Utility Model Content

[0004] In view of the above problems, the utility model provides a battery and an electrical device, which can reduce the size of the battery along the second direction while realizing effective vertical placement of the protection plate, thereby helping to improve the unit volume capacity and energy density of the battery.

[0005] The utility model provides a battery, comprising: a battery cell, wherein the battery cells are multiple and arranged side by side along a first direction, and an end of the battery cell along a second direction is provided with an edge sealing structure; a protection plate, wherein the protection plate is provided at one end of the multiple battery cells provided with the edge sealing structure and is electrically connected to the multiple battery cells, and the protection plate is provided with a avoidance structure for avoiding the edge sealing structure; and a glue injection structure, wherein the glue injection structure at least covers the end of the battery cell provided with the protection plate and at least a part of the structure of the protection plate.

[0006] According to the battery of the utility model, a protective plate is placed at one end of a plurality of battery cells along the second direction, and a avoidance structure is provided on the protective plate, the avoidance structure is used to allow the edge sealing structure at the end of the battery cell, so that the edge sealing structure and the avoidance structure can form an embedded fit, which is beneficial to reducing the size of the overall structure formed by the battery cell and the protective plate along the second direction, and enables the protective plate to be effectively placed vertically at the end of the battery cell. Compared with the solution of placing the protective plate horizontally, the size of the battery along the second direction can be further reduced, thereby improving the space utilization of the battery, and further improving the unit volume capacity and energy density of the battery.

[0007] In some embodiments, the battery cell has a top surface and a side surface, the top surface is located at one end of the battery cell along the second direction, and the side surface is located at one end of the battery cell along the first direction, the top surface has a top seal extending from the top surface and folded toward the top surface, and the side surface has a side seal extending from the side surface and folded toward the side surface, the overlapping area of ​​the top seal and the side seal constitutes the edge seal structure, and at least part of the structure of the overlapping area is folded toward the top surface.

[0008] In some embodiments, the overlapping area includes a first overlapping portion and a second overlapping portion, the first overlapping portion being bent from the side where the side seal is located toward the top surface by a partial structure of the overlapping area and attached to the top surface, the second overlapping portion being the portion of the overlapping area other than the first overlapping portion, the second overlapping portion being located on the side of the first overlapping portion facing away from the top surface and protruding from the rest of the top surface.

[0009] In some embodiments, there are two battery cells, and the edge sealing structure includes a first edge sealing portion. The first edge sealing portion of each battery cell is located at one end of the battery cell close to another battery cell along the first direction, and the avoidance structure is avoided and coordinated with the first edge sealing portions of the two battery cells.

[0010] In some embodiments, the avoidance structure is formed as an avoidance gap, and the first edge sealing portion is located in the avoidance gap.

[0011] In some embodiments, the protection plate has a first side surface facing the battery cell and a second side surface facing away from the battery cell, and the avoidance gap is formed by the first side surface being recessed toward the second side surface.

[0012] In some embodiments, the second overlapping portion is stacked on a side of the first overlapping portion facing away from the top surface.

[0013] In some embodiments, the protective plate has a third side and a fourth side opposite to each other along a third direction, the avoidance structure is formed by one of the third side and the fourth side being recessed toward the other, and the third direction is perpendicular to the first direction and the second direction respectively.

[0014] In some embodiments, an included angle is formed between the second overlapping portion and the first overlapping portion, and a setting height of the second overlapping portion is adapted to a height of the avoidance structure.

[0015] In some embodiments, the edge sealing structure also includes a second edge sealing portion, and the second edge sealing portion of each of the battery cells is located at one end of the battery cell away from another battery cell along the first direction, and the second edge sealing portion does not overlap with the projection of the protective plate in the reference plane, and the reference plane is parallel to the top surface of the battery cell.

[0016] In some embodiments, a side of the protection plate facing the battery cell has an electronic device, and the electronic device is staggered with the edge sealing structure.

[0017] In some embodiments, a tab connecting piece is provided on the side of the protection plate facing away from the battery cell, and a tab is provided on one end of the battery cell facing the protection plate. The tab is connected to the tab connecting piece, and the tab is spaced apart from the edge of the protection plate.

[0018] In some embodiments, the pole tab connecting piece includes: a first connecting segment and a second connecting segment, the first connecting segment is respectively connected to the protective plate and the pole tab, one end of the second connecting segment is connected to the first connecting segment, and at least part of the structure of the second connecting segment is located on the side of the pole tab that is away from the first connecting segment.

[0019] In some embodiments, the protective plate includes: a first protective plate and a second protective plate, the first protective plate is a rigid part, the second protective plate is a flexible part, part of the structure of the second protective plate is stacked and connected to the first protective plate, and the rest of the structure of the second protective plate is located outside the glue injection structure.

[0020] In some embodiments, the second protection plate is spaced apart from the electronic device.

[0021] In some embodiments, the electronic devices include a first type of electronic devices and a second type of electronic devices, the height of the first type of electronic devices along the second direction is less than the height of the second type of electronic devices along the second direction, the first type of electronic devices are arranged on the portion of the second protective plate that overlaps with the first protective plate, the second type of electronic devices are arranged on the first protective plate and spaced apart from the second protective plate along the first direction, and the first type of electronic devices and the second type of electronic devices jointly define the avoidance structure.

[0022] In some embodiments, the glue injection structure includes: a first glue segment, which is located at one end of the two battery cells along the second direction and is suitable for covering the end of the battery cell and at least a partial structure of the protective plate; a second glue segment, which is located in the gap between the two battery cells and is respectively connected to the sides of the two battery cells.

[0023] In some embodiments, the glue injection height of the glue injection structure along the third direction is adapted to the thickness of the battery cell with the largest thickness among the plurality of battery cells.

[0024] In some embodiments, the width of the second rubber segment along the first direction ranges from 0 to 2 mm.

[0025] The utility model also provides an electrical device, comprising: a device body and the above-mentioned battery, wherein the battery is arranged on the device body.

[0026] According to the electric device of the present invention, by setting the battery of the above embodiment, due to the high space utilization rate of the battery, it has a higher energy density under the same volume, which helps to improve the endurance of the electric device and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic structural diagram of a battery according to an embodiment of the utility model at one angle;

[0029] Figure 2 A schematic structural diagram of a battery according to another embodiment of the utility model from another angle;

[0030] Figure 3 This is a structural schematic diagram of a battery according to another embodiment of the utility model from another angle;

[0031] Figure 4 An exploded view of a battery according to some embodiments of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of batteries in some embodiments of the utility model;

[0033] Figure 5a for Figure 5 The middle circle shows an enlarged view of site A;

[0034] Figure 5b for Figure 5 The middle circle shows an enlarged view of site B;

[0035] Figure 6 for Figure 5 A schematic structural diagram of an angle of a battery protection plate shown in FIG.

[0036] Figure 7 for Figure 5 A schematic structural diagram of the battery from another angle shown in FIG.

[0037] Figure 8 It is a schematic diagram of the structure of batteries in some embodiments of the utility model;

[0038] Fig. 9 for Figure 8 A schematic structural diagram of an angle of a battery protection plate shown in FIG.

[0039] Fig.10 for Figure 8 A schematic structural diagram of the protection plate of the battery shown in another angle;

[0040] Fig.11 It is a schematic diagram of the structure of batteries in some embodiments of the utility model;

[0041] Fig.12 for Fig.11 A schematic diagram of the structure of the protection board of the battery shown in;

[0042] Fig.13 for Fig.11 A schematic structural diagram of the battery from another angle shown in FIG.

[0043] Fig.13a for Fig.11 A schematic diagram of the structure of a battery cell shown in ;

[0044] Fig.14 It is a schematic diagram of the structure of the protection plate of the battery in some embodiments of the utility model;

[0045] Fig.15 for Fig.14 An exploded view of the protection plate shown in ;

[0046] Fig.16 It is a schematic diagram of the structure of batteries in some embodiments of the utility model;

[0047] Fig.17 It is a schematic diagram of the structure of the battery cell of some embodiments of the utility model;

[0048] Fig.18 It is a schematic diagram of the cooperation between the battery and the glue injection fixture in some embodiments of the utility model;

[0049] Fig.19 It is a schematic diagram of the dimensions of the glue injection fixture of some embodiments of the utility model;

[0050] Fig. 20 It is a structural schematic diagram of the glue injection fixture of some embodiments of the utility model;

[0051] Fig.21 It is a structural schematic diagram of the glue injection fixture of some embodiments of the utility model;

[0052] Fig. 22 It is a schematic diagram of the structure of the glue injection fixture of some embodiments of the utility model.

[0053] Description of reference numerals:

[0054] 100-battery;

[0055] 1-battery cell; 1a-first battery cell; 1b-second battery cell; 101-top edge seal; 102-side edge seal;

[0056] 11-edge sealing structure; 111-first edge sealing portion; 1111-first overlapping portion; 1112-second overlapping portion; 112-second edge sealing portion;

[0057] 12-Pole ear;

[0058] 2-Protection plate;

[0059] 21-first protective plate; 22-second protective plate;

[0060] 23-avoidance structure; 24-ear connecting piece;

[0061] 25-Electronic devices; 251-First category electronic devices; 252-Second category electronic devices;

[0062] 3- Glue injection structure;

[0063] 31-first rubber section; 32-second rubber section;

[0064] 200- glue injection fixture;

[0065] 201- glue injection cavity; 202- mounting groove; 2021- first groove section; 2022- second groove section; 2023- fixing part;

[0066] 203-positioning device; 2031-positioning slider; 2032-elastic connecting piece;

[0067] 204-Assembly structure. DETAILED DESCRIPTION

[0068] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely 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, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0069] As electronic products and other electrical equipment become more intelligent, their power is increasing. In order to meet the power requirements of electronic products, it is necessary to increase the battery power as much as possible while ensuring the battery capacity. At present, the power of soft-pack batteries is mainly increased by increasing the number of cells.

[0070] However, in the current dual-cell battery structure, when the protective plate is placed vertically, the top sealing edges of the two side-by-side cells will interfere with the protective plate, resulting in a larger volume of the battery after injection packaging, which cannot fully improve the space utilization of the battery.

[0071] In view of this, the utility model provides a battery and an electrical equipment, wherein a protective plate is placed at one end of a plurality of battery cells along a second direction, and an avoidance structure is arranged on the protective plate, wherein the avoidance structure is used to allow the edge sealing structure at the end of the battery cell, so that the edge sealing structure and the avoidance structure can form an embedded fit, which is beneficial to reducing the size of the overall structure formed by the battery cell and the protective plate along the second direction, and enables the protective plate to be effectively placed vertically at the end of the battery cell. Compared with the solution of placing the protective plate horizontally, the size of the battery along the second direction can be further reduced, thereby improving the space utilization of the battery, and further improving the battery unit volume capacity and energy density.

[0072] Reference below Figure 1-Figure 22 A battery according to an embodiment of the present invention is described.

[0073] Combination Figure 1-Figure 4 The battery 100 of the embodiment of the utility model may include a battery cell 1, a protection plate 2 and a glue injection structure 3.

[0074] Specifically, there are multiple battery cells 1, where multiple refers to two or more, and the multiple battery cells 1 are arranged along a first direction (such as Figure 1 The cells 1 are arranged side by side in the X direction as shown in FIG. Figure 1 An edge sealing structure 11 is provided at one end of the battery cell 1 (in the Y direction shown in the figure), and the first direction and the second direction are perpendicular to each other. The edge sealing structure 11 here refers to the edge sealing formed by the outer film shell (such as aluminum-plastic film) of the outermost layer of the battery cell 1 when the internal pole piece is encapsulated. The edge sealing structure 11 can be one or more, and the number of edge sealing structures 11 can be reasonably set according to process factors, etc. The edge sealing structure 11 can ensure the sealing inside the battery cell 1.

[0075] The protection plate 2 is arranged at one end of the plurality of battery cells 1 along the second direction (i.e., the end of the battery cell 1 provided with the edge sealing structure 11), and is electrically connected to the plurality of battery cells 1. It can be understood that the battery cell 1 has a pole ear 12 at one end along the second direction, and the protection plate 2 needs to be connected to the pole ear 12. Therefore, the protection plate 2 can be arranged at the pole ear end of the battery cell 1. And the plane where the protection plate 2 is located is parallel to the end face of the battery cell 1 along the second direction. In other words, the protection plate 2 is in a vertical form, and at this time, the protection plate 2 is arranged opposite to the end face of the pole ear end of the battery cell 1. In addition, the protection plate 2 can also be arranged at a certain angle relative to the end face of the battery cell 1. A avoidance structure 23 can be provided on the protection plate 2, and the avoidance structure 23 can avoid the edge sealing structure 11. For example, the edge sealing structure 11 can be in the avoidance structure 23. In this way, the size of the packaged battery 100 along the second direction can be reduced, so that the space occupation can be reduced as much as possible when the protection plate 2 is placed vertically, thereby improving the space utilization rate.

[0076] The glue injection structure 3 at least covers one end of the battery cell 1 provided with the protection plate 2 and at least a part of the structure of the protection plate 2. Thus, the glue injection structure 3 encapsulates the multiple battery cells 1 and the protection plate 2 into one, thereby achieving a stable connection between the multiple battery cells 1 and the protection plate 2.

[0077] According to the battery 100 of the embodiment of the utility model, the protection plate 2 is placed at one end of the multiple battery cells 1 along the second direction, and a avoidance structure 23 is provided on the protection plate 2, and the avoidance structure 23 is used to allow the edge sealing structure 11 at the end of the battery cell 1, so that the edge sealing structure 11 and the avoidance structure 23 can form an embedded fit, which is beneficial to reducing the size of the overall structure formed by the battery cell 1 and the protection plate 2 along the second direction, and enables the protection plate 2 to be effectively placed vertically at the end of the battery cell 1. Compared with the solution of placing the protection plate horizontally, the size of the battery 100 along the second direction can be further reduced, thereby improving the space utilization of the battery 100, and further improving the unit volume capacity and energy density of the battery 100.

[0078] In some embodiments, the battery cell 1 has a top surface and a side surface, wherein the top surface is located at one end of the battery cell 1 along the second direction, and the side surface is located at one end of the battery cell along the first direction, the top surface has a top seal 101 extending from the top surface and folded toward the top surface, and the side surface has a side seal 102 extending from the side surface and folded toward the side surface. It can be understood that the top seal 101 and the side seal 102 are both formed by the outer film shell of the battery cell after an edge sealing process, and, when the top seal 101 and the side seal 102 are not folded, the top seal 101 extends along the second direction, and the side seal 102 extends along the first direction, and the top seal 101 and the side seal 102 have an overlapping area, and the overlapping area is located at the corners of the top seal 101 and the side seal 102. In order to reduce the space occupied by the top seal 101 and the side seal 102 in the battery cell 1, the top seal 101 is bent ninety degrees from its root (i.e., the part where the top seal 101 is connected to the top surface) to make the top seal 101 fit the top surface of the battery cell 1, and the side seal 102 is folded ninety degrees from its root (i.e., the part where the side seal 102 is connected to the side) to make the side seal 102 fit the side of the battery cell 1. At this time, the overlapping area of ​​the top edge seal 101 and the side edge seal 102 cannot be attached to the top surface alone with the top edge seal 101, nor can it be attached to the side surface alone with the side edge seal 102. In order to avoid the overlapping area from occupying too much space, at least part of the structure of the overlapping area can be folded toward the top surface to reduce the space occupied by the overlapping area. At the same time, an avoidance structure 23 is provided on the protective plate 2 to avoid the overlapping area. In other words, the overlapping area of ​​the top edge seal 101 and the side edge seal 102 in this embodiment constitutes the edge seal structure 11. In this way, the protective plate 2 can be placed vertically, and the top edge seal 101 and the side edge seal 102 of the battery cell 1 can be better accommodated, and the overlapping area of ​​the top edge seal 101 and the side edge seal 102 can be avoided from the protective plate to minimize the space occupied by the battery cell 1 and improve the energy density of the battery 100.

[0079] It can be understood that when the battery cell 1 has side sealing edges 102 at both ends along the first direction, the two side sealing edges 102 have overlapping areas with the top sealing edges 101 respectively. At this time, the battery cell 1 has two edge sealing structures 11, and the two edge sealing structures 11 are respectively located at the two ends of the top surface of the battery cell 1 along the first direction.

[0080] In some embodiments, reference Figure 5a and Fig.13aThe overlapped area may include a first overlapped portion 1111 and a second overlapped portion 1112. The first overlapped portion 1111 is formed by bending from the side where the side seal 102 is located toward the top surface by a partial structure of the overlapped area and is attached to the top surface. The second overlapped portion 1112 is the portion of the overlapped area other than the first overlapped portion 1111. The second overlapped portion 1112 is located on the side of the first overlapped portion 1111 that is away from the top surface and protrudes from the rest of the top surface of the battery cell 1. In this way, the side surface of the battery cell 1 can be ensured to be relatively flat, so that the two battery cells 1 can be arranged side by side along the first direction and the size of the battery 100 along the first direction can be reduced. The second overlapped portion 1112 can be matched with the avoidance structure 23 to avoid, so that the folding method of the overlapped area is relatively simple and easy to implement.

[0081] In some embodiments, reference Figure 1-Figure 4 There are two battery cells 1, and the edge sealing structure 11 may include a first edge sealing portion 111. The first edge sealing portion 111 of each battery cell 1 is located at one end of the battery cell 1 close to another battery cell 1 along the first direction, and the avoidance structure 23 avoids and cooperates with the first edge sealing portions 111 of the two battery cells 1. For example, the two battery cells 1 are the first battery cell 1a and the second battery cell 1b, respectively, wherein the first edge sealing portion 111 of the first battery cell 1a is located at the pole ear end of the first battery cell 1a and close to one end of the second battery cell 1b along the second direction, and the first edge sealing portion 111 of the second battery cell 1b is located at the pole ear end of the second battery cell 1b and close to one end of the first battery cell 1a along the second direction, that is, the first edge sealing portions 111 of the first battery cell 1a and the second battery cell 1b are located at one end close to each other, and at the same time, correspond to the middle position of the protection plate 2. In this way, the first edge sealing portion 111 can avoid the interference with the middle of the protection plate 2, thereby helping to reduce the size of the battery 100 along the second direction to improve space utilization.

[0082] In some embodiments, in combination Figure 4-Figure 7 , Figure 8-Figure 10 as well as Figure 11-13 The avoidance structure 23 is formed as an avoidance gap, and the first edge sealing portion 111 is located in the avoidance gap. In this way, the space utilization of the battery 100 in the second direction can be maximized.

[0083] In some embodiments, in combination Figure 8-Figure 10 The protection plate 2 has a first side surface facing the battery cell 1 and a second side surface facing away from the battery cell 1. The avoidance notch is formed by the first side surface being recessed toward the second side surface. At this time, the thickness of the corresponding position of the avoidance notch is less than the thickness of the remaining positions of the protection plate 2. In this way, the structure of the avoidance notch is relatively simple, and it is convenient to manufacture and assemble.

[0084] Furthermore, if Figure 5aAs shown, the second overlapping portion 1112 is stacked on the side of the first overlapping portion 1111 facing away from the top surface. That is, when an avoidance gap is set on the side of the protective plate 2 facing the battery cell 1, the second overlapping portion 1112 and the first overlapping portion 1111 can be stacked in the second direction to minimize the space occupied by the edge sealing structure 11 and better adapt to the avoidance gap.

[0085] In some embodiments, the protection plate 2 has a Figure 1 The avoidance structure 23 is formed by one of the third side surface and the fourth side surface being recessed toward the other side surface, and the third direction is perpendicular to the first direction and the second direction. For example, the third side surface may be the upper edge of the protective plate 2, and the fourth surface may be the lower edge of the protective plate 2. Figure 4-Figure 6 As shown, the avoidance structure 23 can be formed by the upper edge of the protection plate 2 being recessed downward; or, as shown in Figure 11-13 As shown, the avoidance structure 23 can be formed by the lower edge of the protection plate 2 being recessed upward, and the first edge sealing portion 111 is located opposite to the avoidance structure 23. In this way, the avoidance structure 23 is relatively simple in structure and easy to implement.

[0086] Furthermore, if Fig.13a As shown, there is an angle between the second overlapping portion 1112 and the first overlapping portion 1111, and the setting height of the second overlapping portion 1112 is adapted to the height of the avoidance structure 23. That is to say, when the avoidance notch is set on one side of the protection plate 2 in the height direction, the thickness of the protection plate 2 in the second direction is not reduced, only the height of the corresponding part of the avoidance notch is reduced. At this time, in order to further reduce the thickness of the edge sealing structure 11, the second overlapping portion 1112 can be arranged not in a stacked manner with the first overlapping portion 111, but in the case that it does not exceed the avoidance notch in the second direction, it is made to form a certain angle with the first overlapping portion 1111, for example, a 90° angle. At this time, the second overlapping portion 1112 extends along the second direction and is just in the avoidance notch, so as to minimize the space occupied by the edge sealing structure 11 and better adapt to the avoidance notch.

[0087] In some embodiments, the edge sealing structure 11 may further include a second edge sealing portion 112, and the second edge sealing portion 112 of each battery cell 1 is located at one end of the battery cell 1 away from another battery cell 1 along the first direction, and the second edge sealing portion 112 and the protection plate 2 are staggered in the first direction. In other words, the projections of the second edge sealing portion 112 and the protection plate 2 in the reference plane do not overlap, and the reference plane is parallel to the top surface of the battery cell 1. For example, the second edge sealing portion 112 of the first battery cell 1a is located at one end of the first battery cell 1a away from the second battery cell 1b along the second direction, and the second edge sealing portion 112 of the second battery cell 1b is located at one end of the second battery cell 1b away from the first battery cell 1a along the second direction, and the protection plate 2 is located between the second edge sealing portion 112 of the first battery cell 1a and the second edge sealing portion 112 of the second battery cell 1b. In this way, the structure of the protection plate 2 that avoids the second edge sealing portions 112 of the two battery cells 1 is omitted at both ends of the protection plate 2, and the structure of the protection plate 2 can be simplified.

[0088] It can be understood that the injection structure 3 also covers the second edge sealing portion 112 to prevent the second edge sealing portion 112 from being exposed, so as to improve the appearance consistency of the battery 100 and the structural stability of the packaged battery 100.

[0089] In some embodiments, in combination Fig.16 The side of the protection plate 2 facing the battery cell 1 has an electronic device 25, and the electronic device 25 is staggered with the edge sealing structure 11. For example, the electronic device 25 can be arranged on the side of the first edge sealing portion 111 of the two battery cells 1 along the second direction and away from each other. In this way, it can be avoided that when the electronic device 25 on the protection plate 2 overlaps with the edge sealing structure 11, the size of the battery 100 along the second direction increases. At the same time, it can also be avoided that the electronic device 25 and the edge sealing structure 11 squeeze each other and cause damage to the protection plate 2.

[0090] In some possible examples, the electronic device 25 may also be staggered with the tab 12 of the battery cell 1 to prevent a short circuit and ensure that the protection board 2 operates normally.

[0091] In some embodiments, a tab connection piece 24 is provided on the side of the protection plate 2 facing away from the battery cell 1, and a tab 12 is provided on one end of the battery cell 1 facing the protection plate 2, the tab 12 is connected to the tab connection piece 24, and the tab 12 is spaced apart from the edge of the protection plate 2. That is, in this embodiment, the tab 12 of the battery cell 1 needs to go from one side of the protection plate 2 along the second direction to the other side (for example, the tab 12 of the battery cell 1 can go from the upper edge of the protection plate 2 to the side of the protection plate 2 facing away from the battery cell 1) to be interconnected with the tab connection piece 24 on the protection plate 2 to facilitate external energy output. In addition, the tab 12 does not contact the corners of the protection plate 2 to prevent short circuits. For example, the tab 12 can be constructed to have a sufficient length so that it does not contact the corners of the protection plate 2 after being folded.

[0092] In some embodiments, the tab connection piece 24 may include a first connection segment and a second connection segment, wherein the first connection segment is connected to the protection plate 2 and the tab 12 respectively, and one end of the second connection segment is connected to the first connection segment, for example, the second connection segment and the first connection segment may be welded. At least part of the structure of the second connection segment is located on the side of the tab 12 facing away from the first connection segment, and the second connection segment may be pressed on the side of the tab 12 along the second direction and facing away from the first connection segment to ensure a stable connection between the tab connection piece 24 and the tab 12.

[0093] Optionally, when the tab connecting piece 24 and the tab 12 are not welded, the first connecting section and the second connecting section may be perpendicular to each other, wherein the first connecting section is parallel to the protection plate 2 and connected to each other, and the second connecting section is perpendicular to the protection plate 2. After the tab 12 is welded to the first connecting section, the second connecting section may be bent upward so that the second connecting section and the first connecting section jointly clamp the tab 12. In this way, the tab connecting piece 24 can be stably connected to the tab 12 of the battery cell 1, and the protection plate 2 and the tab 12 can have sufficient contact area to facilitate the output of current.

[0094] In some embodiments, the protection plate 2 may include a first protection plate 21 and a second protection plate 22. The first protection plate 21 is a rigid member, and the second protection plate 22 is a flexible member. In other words, the first protection plate 21 has sufficient structural strength and is not easily deformed, and the second protection plate 22 has sufficient softness and can be bent and deformed to meet the needs of circuit connection.

[0095] Part of the structure of the second protective plate 22 is stacked and connected with the first protective plate 21, and the rest of the structure of the second protective plate 22 is located outside the glue injection structure 3. In other words, the portion of the second protective plate 22 that exceeds the first protective plate 21 is not covered by the glue during the glue injection process, so that the second protective plate 22 can extend out of the glue injection structure 3 and connect to the external circuit. By constructing the protective plate 2 to include the first protective plate 21 and the second protective plate 22, the electronic device 25 can be set using the first protective plate 21, and the external circuit and the first protective plate 21 can be connected through the second protective plate 22, and the second protective plate 22 can increase the structural strength of the first protective plate 21.

[0096] In some embodiments, Fig.16 As shown, the second protection plate 22 is spaced apart from the electronic device 25 to prevent the second protection plate 22 and the electronic device 25 on the first protection plate 21 from short circuiting.

[0097] In addition, in some other possible embodiments, combined with Fig.14 and Fig.15The electronic device 25 may include a first type electronic device 251 and a second type electronic device 252. The height of the first type electronic device 251 along the second direction is less than the height of the second type electronic device 252 along the second direction. The first type electronic device 251 is arranged on the portion of the second protective plate 22 that overlaps with the first protective plate 21. The second type electronic device 252 is arranged on the first protective plate 21 and is spaced apart from the second protective plate 22 along the first direction. The first type electronic device 251 and the second type electronic device 252 jointly define an avoidance structure 23.

[0098] In other words, in the present embodiment, a recessed portion is not provided on the main body of the first protective plate 21 as the avoidance structure 23, but the area between the overall structure consisting of the second protective plate 22 and the first type of electronic device 251 and the second type of electronic device 252 is used as the avoidance structure 23. In this way, the battery 100 of the present embodiment can not only realize the edge sealing structure 11 of the battery cell 1, but also arrange the electronic device 25 with a larger height in the protective plate 2 on one side of the avoidance structure 23, and arrange the electronic device 25 with a smaller height in the protective plate 2 and the second protective plate 22 on the other side of the avoidance structure 23, so as to make full use of the spatial size of the protective plate 2, and eliminate the need to separately open the avoidance structure 23 on the main body of the first protective plate 21, thereby simplifying the manufacturing process and reducing costs.

[0099] In some embodiments, in combination Figure 1-Figure 4 , the glue injection structure 3 may include a first glue segment 31 and a second glue segment 32. The first glue segment 31 is located at one end of the two battery cells 1 along the second direction, and is suitable for covering the end of the battery cell 1 and at least part of the structure of the protective plate 2. The second glue segment 32 is located in the gap between the two battery cells 1, and is respectively connected to the sides of the two battery cells 1, and the first glue segment 31 and the second glue segment 32 form a T-shaped structure. The ends of the two battery cells 1 can be connected by the first glue segment 31, and the sides of the two battery cells 1 can be connected by the second glue segment 32. It can be understood that the glue injection structure 3 is formed by solidifying the liquid colloid injected into the relevant parts of the battery cell 1.

[0100] Compared with the solution of only injecting glue to connect the ends of the two battery cells 1 in the related art, the present embodiment connects the sides of the two battery cells 1 through the second glue segment 32, which can enhance the connection stability of the two battery cells 1 on the one hand, and on the other hand, even if there is a deviation in the size of the two battery cells 1 along the first direction, the accumulated deviation of the two battery cells 1 can be transferred to the size of the second glue segment 32 along the first direction. In other words, in the case that there is a deviation in the size of any one of the two battery cells 1 along the first direction, since the size and shape of the gap between the two battery cells 1 are not fixed, in order to ensure the consistency of the size of the battery 100 as a whole along the first direction, the gap area can be injected with glue so that the colloid fills the gap, and the second glue segment 32 can compensate for the size deviation of the battery cell 1 along the first direction. Through the above design, the tolerance of the width of the dual-cell 1 battery 100 can be greatly reduced, and the head of the battery 100 does not need to be PACKed with adhesive tape, the difficulty of the overall PACK process is greatly reduced, and the pad printing pattern is easy to print, and the overall size consistency rate is high.

[0101] In some embodiments, the height of the glue injection structure 3 is adapted to the maximum thickness of the two battery cells 1. Optionally, the width of the second glue segment 32 along the first direction ranges from 0 to 2 mm. For example, the width of the second glue segment 32 can be 0, 0.5 mm, 1 mm, 1.5 mm or 2 mm. The actual width of the second glue segment 32 at different locations in the second direction is determined by the actual width of the battery cell 1 at the corresponding location, that is, the width of the second glue segment 32 is equal to the tolerance band size of the two battery cells 1 accumulated to the middle gap area. The average width of the second glue segment 32 can be 1 mm.

[0102] It can be understood that when the width of the second adhesive segment 32 is 0 mm, it means that the widths of the two battery cells 1 at the corresponding positions are large, so that the two battery cells 1 are in contact with each other. When the width of the second angle is 2 mm, it means that the width of at least one of the two battery cells 1 at the corresponding position is small, so that the distance between the two battery cells 1 is the largest. It can be understood that when the width dimensions of the two battery cells 1 are both at the upper limit dimension, the width of the second adhesive segment 32 is 0, and when the width dimensions of the two battery cells 1 are both at the lower limit dimension, the width of the second adhesive segment 32 is 2 mm.

[0103] In some embodiments, the thickness of the glue injection of the protection plate 2 is in the range of 3-10 mm. For example, the thickness of the glue injection of the protection plate 2 can be 3 mm, 5 mm, 7 mm, 8 mm or 10 mm. Of course, this embodiment does not limit this. The actual glue injection thickness of the protection plate 2 can be flexibly selected within the above range according to actual needs. In this way, the circuit board can be effectively protected without increasing the space occupied by the battery 100 in the battery compartment, thereby improving space utilization.

[0104] In some embodiments, the distance from any side edge of the protective plate 2 along the first direction to the side of the battery cell 1 on the corresponding side is 3-8 mm, and the distance from any side edge of the protective plate 2 along the first direction to the side of the battery cell 1 on the corresponding side is 3 mm, 4 mm, 5 mm, 6 mm, 7 mm or 8 mm. Of course, this embodiment does not limit this. The distance from any side edge of the protective plate 2 along the first direction to the side of the battery cell 1 on the corresponding side can be flexibly selected within the above range according to actual needs. In this way, it can be ensured that the colloid can better cover the protective plate 2 and the end of the battery cell 1.

[0105] The following describes an electrical device according to an embodiment of the second aspect of the utility model.

[0106] The power-consuming device of this embodiment may be a mobile phone, a tablet, an electronic watch, a new energy vehicle, a communication base station, etc., or other power-consuming devices. The power-consuming device may include a device body and the battery 100 in the above embodiment.

[0107] Specifically, the device body may be provided with a battery compartment and a power supply interface, and the battery 100 may be disposed in the battery compartment of the device body and electrically connected to the power supply interface, so that the battery 100 can supply power to the device body.

[0108] According to the electric device of the embodiment of the utility model, by setting the battery 100 of the above embodiment, due to the high space utilization of the battery 100, it has a higher energy density under the same volume, which helps to improve the endurance of the electric device and improve the user experience.

[0109] The following describes a glue injection fixture 200 for a battery 100 according to an embodiment of the third aspect of the utility model.

[0110] Combination Figure 18-Figure 20 The glue injection fixture 200 of this embodiment can be used for the glue injection of the above-mentioned battery 100. Specifically, the glue injection fixture 200 may include a mold body, the mold body defines a glue injection cavity 201, the width of the glue injection cavity 201 along the first direction is greater than the sum of the widths of the two battery cells 1, and the length of the glue injection cavity 201 along the second direction is greater than the sum of the length of the battery cell 1 and the thickness of the protection plate 2.

[0111] Specifically, the glue injection fixture 200 of this embodiment can be designed based on the deviation dimension of the width of the battery cell 1, and serve as a special positioning fixture (base) for glue injection of a multi-battery cell 1 battery 100. Taking a dual-battery cell 1 battery 100 as an example, the inner width d1 of the glue injection fixture 200 (i.e., the width of the glue injection cavity 201 along the first direction) is equal to twice the deviation dimension of the width of the battery cell 1. If the width of the battery cell 1 is A±a, the corresponding inner width dimension d1 of the glue injection fixture 200 is 2(A+a). For a multi-battery cell 1 battery 100, the corresponding inner width dimension d1 of the glue injection fixture 200 is n(A+a). In this way, after placing multiple battery cells 1 side by side in the glue injection cavity 201 of the glue injection fixture 200, it can be ensured that a glue injection gap for accommodating the colloid (corresponding to the second glue section 32 after the colloid solidifies) is formed between two adjacent battery cells 1. The inner length d2 of the glue injection fixture 200 (i.e., the length of the glue injection cavity 201 along the first direction) is the deviation dimension of the length of the battery cell 1 plus the glue injection extension length. If the length of the battery cell 1 is B±b and the glue injection extension length is c, then the inner length d1 of the glue injection fixture 200 is equal to (B±b)+c, wherein the value of the glue injection extension length c should ensure that the colloid completely covers the protective plate by more than 0.5 mm. In this way, it can be ensured that there is a glue injection gap on one side of the ear end of the battery cell 1 to accommodate the colloid (corresponding to the first glue section 31 after the colloid solidifies). The inner thickness d3 of the glue injection fixture 200 (i.e., the thickness of the glue injection cavity 201 along the third direction) is the deviation dimension of the thickness of the battery cell 1. If the thickness of the battery cell 1 is T±t, then the inner thickness d3 of the positioning fixture is equal to Tt. In this way, it can be ensured that the colloid completely fills the glue injection area, and the outer surface of the battery 100 is relatively smooth, and the appearance consistency is high.

[0112] Taking a battery 100 having two battery cells 1 as an example, the production process of the battery 100 of this embodiment is described as follows:

[0113] S101, bending the first edge sealing portions 111 of the two battery cells 1;

[0114] S102, arranging two battery cells 1 side by side in the glue injection cavity 201 of the glue injection fixture 200, wherein the sides of the two battery cells 1 away from each other along the first direction are respectively fitted with the opposite sides of the glue injection cavity 201, the bottom surfaces of the two battery cells 1 are fitted with the bottom wall of the glue injection cavity 201, and the ends of the two battery cells 1 along the second direction without the pole ears 12 are fitted with the side wall of the glue injection cavity 201 along the second direction, so that the two battery cells 1 and the glue injection fixture 200 jointly define a T-shaped glue injection area;

[0115] S103, vertically placing the protection plate 2 on the tab ends of the two battery cells 1, so that the first edge sealing portions 111 of the two battery cells 1 correspond to the avoidance structures 23 on the protection plate 2, and the electronic devices 25 on the protection plate 2 avoid the first edge sealing portions 111, and welding the tab 12 connecting plates of the protection plate 2 to the tabs 12 of the two battery cells 1 respectively;

[0116] S104 , injecting glue into the battery cell 1 after welding the protection plate 2 , so as to form a dual-cell 1 battery 100 having a T-shaped glue injection structure 3 .

[0117] The glue injection fixture 200 according to the embodiment of the utility model is suitable for injecting glue into the multiple battery cells 1 of the battery 100 of the above embodiment, so that the ends and sides of the multiple battery cells 1 can be connected through the glue injection structure 3, which greatly reduces the tolerance of the width of the dual-cell 1 battery 100. The battery 100 does not need to be fixed with adhesive tape in the middle gap between the front and back of the dual-cell 1, nor does it need to face the problem of difficulty in packaging the end adhesive tape. The difficulty of the overall PACK process is greatly reduced. In addition, the pad printing layout of the battery 100 is no longer affected by the difficulty of printing in the middle groove of the dual-cell 1, and the structure is simple and the appearance is beautiful. Moreover, the size consistency rate of the battery 100 after glue injection is high, which is conducive to the large-scale production of the battery 100.

[0118] In some embodiments, reference Fig.21 In order to ensure that the positions of the multiple battery cells 1 in the glue injection cavity 201 are fixed, the glue injection fixture 200 of this embodiment can also be provided with a positioning device 203. The positioning device 203 can be multiple corresponding to the battery cells 1. The positioning device 203 is used to position the battery cell 1 to prevent the battery cell 1 from slightly moving during the glue injection process, ensure that the position of the battery cell 1 is fixed, and ensure the overall size consistency of the battery 100 after glue injection.

[0119] In some embodiments, reference Fig.21 The glue injection cavity 201 is provided with mounting grooves 202 on opposite sides along the first direction, and the mounting grooves 202 may include a first groove section 2021 and a second groove section 2022, wherein the first groove section 2021 extends along the first direction and is connected with the glue injection cavity 201, and the second groove section 2022 extends along the second direction, and the first end of the second groove section 2022 is connected with an end of the first groove section 2021 away from the glue injection cavity 201, and the second end of the second groove section 2022 is provided with a fixing portion 2023, and the fixing portion 2023 may be a fixing column or other fixing hooks.

[0120] The positioning device 203 may include: a positioning slider 2031 and an elastic connecting member 2032, wherein the positioning slider 2031 includes a first positioning section and a second positioning section, the first positioning section is adapted to the first slot section 2021 and is located in the first slot section 2021, the second positioning section is adapted to the second slot section 2022 and is located in the second slot section 2022, the positioning slider 2031 can slide along the second direction, the elastic connecting member 2032 is in the second slot section 2022, one end of the elastic connecting member 2032 is connected to the fixing portion 2023, and the other end is connected to the second positioning section, and the elastic connecting member 2032 has a pre-tightening force on the positioning slider 2031 along the second direction and toward the inner side of the injection cavity 201.

[0121] After the battery cell 1 is placed in the glue injection cavity 201, the first positioning section abuts against the pole ear end of the battery cell 1, and under the action of the elastic connector 2032, the side wall of the battery cell 1 is tightly fitted with the inner wall of the glue injection cavity 201, so that the position of the battery cell 1 in the glue injection cavity 201 is fixed, so that the glue can better fill the glue injection area between the two battery cells 1 and the end of the battery cell 1. In this way, the structure of the positioning device 203 and the glue injection fixture 200 is relatively simple and easy to implement.

[0122] In some possible embodiments, reference Fig. 22 Since the glue injection process is only one link in the entire production process of the battery 100, other production steps of the battery 100 may also use corresponding molds. In order to facilitate the integration of the glue injection fixture 200 with other molds, such as a universal mold, an assembly structure 204 can be set on the glue injection fixture 200. For example, the assembly structure 204 can be an assembly hole or other assembly structure 204, and the glue injection fixture 200 can be installed and matched with other molds through the assembly structure 204.

[0123] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0124] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0125] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0126] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, characterized in that: include: A battery cell, wherein the battery cells are arranged side by side in a first direction, and an edge sealing structure is provided at one end of the battery cell along a second direction; A protection plate, the protection plate is arranged at one end of the plurality of battery cells provided with the edge sealing structure and is electrically connected to the plurality of battery cells, and the protection plate is provided with an avoidance structure for avoiding the edge sealing structure; The glue injection structure covers at least one end of the battery cell provided with the protection plate and at least a partial structure of the protection plate.

2. The battery according to claim 1, characterized in that The battery cell has a top surface and a side surface, the top surface is located at one end of the battery cell along the second direction, and the side surface is located at one end of the battery cell along the first direction. The top surface has a top sealing edge extending from the top surface and folded toward the top surface, and the side surface has a side sealing edge extending from the side surface and folded toward the side surface. The overlapping area of ​​the top edge seal and the side edge seal constitutes the edge seal structure, and at least a part of the structure of the overlapping area is folded toward the top surface.

3. The battery according to claim 2, characterized in that The overlapping area includes a first overlapping portion and a second overlapping portion. The first overlapping portion is bent from the side where the side seal is located toward the top surface by a partial structure of the overlapping area and is attached to the top surface. The second overlapping portion is the portion of the overlapping area other than the first overlapping portion. The second overlapping portion is located on the side of the first overlapping portion that is away from the top surface and protrudes from the rest of the top surface.

4. The battery according to claim 3, characterized in that There are two battery cells, and the edge sealing structure includes a first edge sealing portion. The first edge sealing portion of each battery cell is located at one end of the battery cell close to another battery cell along the first direction. The avoidance structure is matched with the first edge sealing parts of the two battery cells in an avoidance manner.

5. The battery according to claim 4, characterized in that The avoidance structure is formed as an avoidance gap, and the first edge sealing portion is located in the avoidance gap.

6. The battery according to claim 5, characterized in that The protection plate has a first side surface facing the battery cell and a second side surface facing away from the battery cell. The avoidance gap is formed by the first side surface being recessed toward the second side surface.

7. The battery according to claim 6, characterized in that The second overlapping portion is stacked on a side of the first overlapping portion facing away from the top surface.

8. The battery according to claim 5, characterized in that The protection plate has a third side surface and a fourth side surface opposite to each other along a third direction, the avoidance structure is formed by one of the third side surface and the fourth side surface being recessed toward the other, and the third direction is respectively perpendicular to the first direction and the second direction.

9. The battery according to claim 8, characterized in that An included angle is formed between the second overlapping portion and the first overlapping portion, and a setting height of the second overlapping portion is adapted to a height of the avoidance structure.

10. The battery according to any one of claims 3 to 9, characterized in that: The edge sealing structure further includes a second edge sealing portion, and the second edge sealing portion of each battery cell is located at an end of the battery cell away from another battery cell along the first direction. The projections of the second edge sealing portion and the protection plate in a reference plane do not overlap, and the reference plane is parallel to the top surface of the battery cell.

11. The battery according to any one of claims 1 to 9, characterized in that The side of the protection plate facing the battery core is provided with an electronic device, and the electronic device is staggered with the edge sealing structure.

12. The battery according to claim 11, characterized in that The protection plate is provided with a tab connection sheet on the side facing away from the battery cell. A pole ear is provided at one end of the battery cell facing the protection plate, the pole ear is connected to the pole ear connecting sheet, and the pole ear is spaced apart from the edge of the protection plate.

13. The battery according to claim 12, characterized in that The tab connecting piece comprises: A first connecting section and a second connecting section, wherein the first connecting section is connected to the protection plate and the pole lug respectively, one end of the second connecting section is connected to the first connecting section, and at least part of the structure of the second connecting section is located on the side of the pole lug facing away from the first connecting section.

14. The battery according to claim 11, characterized in that The protective plate includes: a first protective plate and a second protective plate, the first protective plate is a rigid part, the second protective plate is a flexible part, a part of the structure of the second protective plate is stacked and connected with the first protective plate, and the rest of the structure of the second protective plate is located outside the glue injection structure.

15. The battery according to claim 14, characterized in that The second protection plate is spaced apart from the electronic device.

16. The battery according to claim 14, characterized in that The electronic devices include first-category electronic devices and second-category electronic devices, The height of the first type of electronic devices along the second direction is smaller than the height of the second type of electronic devices along the second direction, The first type of electronic device is arranged on the part of the second protective plate overlapping with the first protective plate, the second type of electronic device is arranged on the first protective plate and is spaced apart from the second protective plate along the first direction, and the first type of electronic device and the second type of electronic device jointly define the avoidance structure.

17. The battery according to any one of claims 1 to 9, characterized in that The glue injection structure comprises: A first adhesive segment, the first adhesive segment is located at one end of the two battery cells along the second direction and is suitable for covering the end of the battery cell and at least a part of the structure of the protection plate; The second glue section is located at the gap between the two battery cells and is respectively connected to the sides of the two battery cells.

18. The battery according to claim 17, characterized in that The glue injection height of the glue injection structure along the third direction is adapted to the thickness of the battery cell with the largest thickness among the plurality of battery cells.

19. The battery according to claim 17, characterized in that The width of the second rubber segment along the first direction ranges from 0 to 2 mm.

20. An electrical equipment, characterized in that: include: Equipment body; The battery according to any one of claims 1 to 19, wherein the battery is arranged in the device body.

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