Battery, battery pack and electric equipment

Abstract

The utility model relates to the technical field of battery structures, and discloses a battery, a battery pack and electric equipment, the battery has a first direction, a second direction and a third direction which are intersected pairwise, the battery comprises a battery body, a protection plate and a packaging shell, the battery body is a solid-state battery cell, and a first end of the battery body along the first direction is provided with a tab assembly; the first end, in the first direction, of the protection plate abuts against the end face of the first end of the battery body, the protection plate is electrically connected with the tab assembly, and the protection plate is electrically connected with a charging and discharging connector; the battery body and the protection plate are located in the packaging shell, the charging and discharging connector penetrates through the packaging shell and is located outside the packaging shell, the thickness of the head of the battery can be reduced, and the battery capacity is improved.

Description

Technical Field

[0001] This application relates to the field of battery structure technology, specifically to batteries, battery packs, and electrical equipment. Background Technology

[0002] As an energy conversion and storage device, batteries have a wide range of uses, covering all aspects of our lives. First, batteries power portable electronic devices such as mobile phones, laptops, and digital cameras, enabling these devices to break free from the constraints of power cords and serve us anytime, anywhere.

[0003] In related technologies, the battery protection board is set outside the packaged battery cell. That is, the positive and negative electrodes are first welded onto the battery, then the battery is packaged, and then the battery protection board is welded to the electrodes. The connection between the battery protection board and the battery is achieved through processes such as wrapping paper or injection molding.

[0004] However, the battery protection board is located at the outer end of the cell, which creates an assembly gap between the battery protection board and the cell. Furthermore, the end of the battery where the battery protection board is located needs to be encapsulated using processes such as wrapping paper or injection molding, which increases the thickness of the battery head and limits the increase in battery capacity. Utility Model Content

[0005] This application provides a battery, a battery pack, and an electrical device to reduce the thickness of the battery head and increase battery capacity.

[0006] In a first aspect, this application provides a battery having a first direction, a second direction, and a third direction that intersect each other in pairs. The battery includes a battery body, a protection board, and a package shell, as detailed below.

[0007] The battery body is a solid-state cell, and a tab assembly is provided at the first end of the battery body along the first direction.

[0008] The first end of the protection plate along the first direction abuts against the end face of the first end of the battery body, the protection plate is electrically connected to the tab assembly, and a charging and discharging connector is electrically connected to the protection plate.

[0009] The battery body and the protection board are located inside the encapsulation shell, while the charging and discharging connector passes through the encapsulation shell and is located outside the encapsulation shell.

[0010] Beneficial effects: By abutting one end of the protection board to the battery body, and since the battery body is a solid-state cell, the protection board and the battery body are encapsulated in the same package, the distance between the protection board and the battery body can be reduced. Furthermore, through the integrated packaging process, the length of the battery body and the protection board in the first direction can be further reduced. Thus, the volume of the battery body can be increased under the same battery size, thereby increasing the battery capacity. Moreover, since the battery body is a solid-state cell, it will not leak like the liquid electrolyte of lithium-ion batteries, thus avoiding battery leakage.

[0011] In one optional embodiment, the electrode assembly includes a first electrode and a second electrode, wherein one of the first electrode and the second electrode is electrically connected to the positive electrode of the battery body, and the other is electrically connected to the negative electrode of the battery body; wherein, along the first direction, the abutment surface of the protection plate and the battery body, the connection end of the first electrode and the battery body, and the connection end of the second electrode and the battery body are all misaligned on the end face of the first end of the battery body.

[0012] In one optional embodiment, the first tab includes a first vertical segment and a first horizontal segment connected together, and the second tab includes a second vertical segment and a second horizontal segment connected together. The first vertical segment and the second vertical segment both extend along a first direction, and the first horizontal segment and the second horizontal segment both extend along a third direction. One of the first vertical segment and the second vertical segment is electrically connected to the positive electrode of the battery body, and the other is electrically connected to the negative electrode of the battery body. The first horizontal segment and the second horizontal segment are both electrically connected to the second end of the protection plate along the first direction.

[0013] In one optional embodiment, the projections of the first vertical segment of the first electrode tab and the second vertical segment of the second electrode tab onto a first plane are offset along the second direction, wherein the first plane is any plane perpendicular to the second direction; and / or, the projections of the first vertical segment of the first electrode tab and the second vertical segment of the second electrode tab onto a second plane are offset along the third direction, wherein the second plane is any plane perpendicular to the third direction.

[0014] In one optional embodiment, the protective plate is provided with a clearance groove on a first side surface along the third direction, the first vertical segment is in contact with the inner wall surface of the clearance groove along the third direction, and the second vertical segment is in contact with the first side surface of the protective plate along the third direction.

[0015] In one optional embodiment, a protection circuit device is disposed on the end face of the second end of the protection plate along the first direction, and a plastic encapsulation layer is disposed on the end face of the second end of the protection plate along the first direction, with the protection circuit device located within the plastic encapsulation layer.

[0016] In one optional embodiment, a first notch is provided on the molding layer, and the portion of the end face of the second end of the protective plate corresponding to the first notch is electrically connected to the first tab; and / or, a second notch is provided on the molding layer, and the portion of the end face of the second end of the protective plate corresponding to the second notch is electrically connected to the second tab.

[0017] In one optional embodiment, the battery further includes a separator disposed between the battery body and the protection plate; and / or, the encapsulation shell is an aluminum-plastic film shell; and / or, the first tab and the second tab are welded to the battery body and the first tab and the second tab are welded to the protection plate; and / or, the charge / discharge connector is an FPC connector.

[0018] Secondly, this application also provides a battery pack, including a housing and a battery as described in any of the embodiments of the first aspect: the housing has a receiving cavity; and multiple batteries are provided, all located within the receiving cavity.

[0019] Beneficial effects: Since the battery pack includes a battery, it has the same effect as a battery, which will not be elaborated here.

[0020] Thirdly, this application also provides an electrical device, including a battery as described in any of the embodiments of the first aspect; or a battery pack as described in the second aspect.

[0021] Beneficial effects: Since the electrical equipment includes batteries, it has the same effects as batteries, which will not be elaborated here. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is an axial view of a battery with its packaging shell removed, according to an embodiment of this application.

[0024] Figure 2 This is a top view of a battery according to an embodiment of this application;

[0025] Figure 3 for Figure 2 Sectional view at point AA.

[0026] Explanation of reference numerals in the attached figures:

[0027] X, first direction; Y, second direction; Z, third direction;

[0028] 1. Battery body; 2. Protection board; 3. Encapsulation shell; 4. Separator;

[0029] 11. Electrode assembly;

[0030] 111. First pole ear; 112. Second pole ear;

[0031] 1111, First vertical segment; 1112, First horizontal segment; 1121, Second vertical segment; 1122, Second horizontal segment;

[0032] 21. Charge / discharge connector; 22. Clearance groove; 23. Protective circuit components; 24. Molding layer;

[0033] 241. First gap; 242. Second gap. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In related technologies, the battery protection board is set outside the packaged battery cell. That is, the positive and negative electrodes are first welded onto the battery, then the battery is packaged, and then the battery protection board is welded to the electrodes. The connection between the battery protection board and the battery is achieved through processes such as wrapping paper or injection molding.

[0036] However, the battery protection board is located at the outer end of the cell, which creates an assembly gap between the battery protection board and the cell. Furthermore, the end of the battery where the battery protection board is located needs to be encapsulated using processes such as wrapping paper or injection molding, which increases the thickness of the battery head and limits the increase in battery capacity.

[0037] Therefore, this application provides a battery, battery pack, and power supply device to reduce the thickness of the battery head and increase the battery capacity.

[0038] The following is combined Figures 1 to 3 This describes an embodiment of the present application.

[0039] According to embodiments of this application, in a first aspect, a battery is provided, such as... Figures 1 to 3 As shown, the battery has a first direction X, a second direction Y and a third direction Z that intersect each other in pairs. The battery includes a battery body 1, a protection board 2 and a package shell 3. The specific scheme is as follows.

[0040] like Figure 1 As shown, the battery body 1 is a solid-state battery cell, which is a type of battery that uses solid electrodes and solid electrolytes; specifically, it can be any type of solid-state battery; the battery body 1 has a tab assembly 11 at its first end along the first direction X, specifically, the tab assembly 11 is a nickel sheet, which is connected to the positive and negative terminals of the battery body 1 by welding.

[0041] like Figure 1 As shown, the protection board 2 is a board with a protection circuit, specifically a PCB circuit board (PCB, Printed Circuit Board). The first end of the protection board 2 along the first direction X abuts against the end face of the first end of the battery body 1. The protection board 2 and the electrode assembly 11 are electrically connected by welding. The protection board 2 is electrically connected with a charging and discharging connector 21. Specifically, the charging and discharging connector 21 is an FPC connector (FPC, Flexible Printed Circuit). Of course, the charging and discharging connector 21 can also be other types of connectors, as long as they can realize the charging and discharging function.

[0042] like Figure 3 As shown, the battery body 1 and the protection board 2 are located inside the encapsulation shell 3, and the charging and discharging connector 21 penetrates the encapsulation shell 3 and is located outside the encapsulation shell 3. Specifically, the encapsulation shell 3 can be an aluminum-plastic film shell formed by the encapsulation process, or it can be a shell formed by other encapsulation materials through the encapsulation process.

[0043] It should be noted that the angle between any two intersecting directions X, Y, and Z is generally 90°, but it can also be other angles, such as 40° to 90°, specifically 40°, 50°, 60°, 70° and 80°, or any other arbitrary angle.

[0044] In the battery manufacturing process, such as Figure 1 As shown, the positive and negative terminals of the battery body 1 are first welded to the tab assembly 11, and then the tab assembly 11 is welded to the positive and negative input terminals on the protection board 2 to achieve electrical connection between the battery body 1 and the protection board 2; then the battery body 1 and the protection board 2 are packaged into one unit by a packaging process (specifically, aluminum-plastic film packaging process).

[0045] In this embodiment, such as Figure 1As shown, by abutting one end of the protection board 2 against the battery body 1, and since the battery body 1 is a solid-state cell, the protection board 2 and the battery body 1 are simultaneously encapsulated in the encapsulation shell 3, thereby reducing the distance between the protection board 2 and the battery body 1. Furthermore, through the integrated encapsulation process, the length of the battery body 1 and the protection board 2 in the first direction X can be further reduced. Thus, with the same battery size, the volume of the battery body 1 can be increased, thereby increasing the battery capacity. Moreover, since the battery body 1 is a solid-state cell, it will not leak like the liquid electrolyte of a lithium-ion battery, thus preventing battery leakage.

[0046] In one embodiment, such as Figure 1 and Figure 3 As shown, the electrode assembly 11 includes a first electrode 111 and a second electrode 112. One of the first electrode 111 and the second electrode 112 is electrically connected to the positive electrode of the battery body 1, and the other is electrically connected to the negative electrode of the battery body 1. Specifically, both the first electrode 111 and the second electrode 112 are nickel sheets.

[0047] Wherein, along the first direction X, the abutting surfaces of the protection plate 2 and the battery body 1, the connecting ends of the first tab 111 and the battery body 1, and the connecting ends of the second tab 112 and the battery body 1 are all misaligned on the end face of the first end of the battery body 1, that is, the abutting surfaces of the protection plate 2 and the battery body 1, the connecting ends of the first tab 111 and the battery body 1, and the connecting ends of the second tab 112 and the battery body 1 do not overlap along the first direction X.

[0048] In this embodiment, by misaligning the contact surfaces of the protection plate 2 and the battery body 1, the connection ends of the first tab 111 and the battery body 1, and the connection ends of the second tab 112 and the battery body 1, it is possible to avoid any overlap between the contact surfaces of the protection plate 2 and the battery body 1, the connection ends of the first tab 111 and the battery body 1, and the connection ends of the second tab 112 and the battery body 1, thereby reducing the size of the battery in the first direction X and increasing the capacity of the battery body 1.

[0049] In one embodiment, such as Figure 1As shown, the first electrode 111 includes a first vertical segment 1111 and a first horizontal segment 1112 connected together, and the second electrode 112 includes a second vertical segment 1121 and a second horizontal segment 1122 connected together. The first vertical segment 1111 and the second vertical segment 1121 both extend along a first direction X, and the first horizontal segment 1112 and the second horizontal segment 1122 both extend along a third direction Z. That is, the first vertical segment 1111 and the second horizontal segment 1122 are obtained by bending, and the included angle of the bend is 90°. Of course, other bending angles are also possible, such as any one of 60°, 65°, 70°, 75°, 80°, 85°, etc. The second vertical segment 1121 and the second horizontal segment 1122 are obtained by bending, and the included angle of the bend is 90°. Of course, other bending angles are also possible, such as any one of 60°, 65°, 70°, 75°, 80°, 85°, etc.

[0050] In the first vertical segment 1111 and the second vertical segment 1121, one of them is electrically connected to the positive electrode of the battery body 1, and the other is electrically connected to the negative electrode of the battery body 1. The first horizontal segment 1112 and the second horizontal segment 1122 are both electrically connected to the second end of the protection plate 2 along the first direction X.

[0051] In this embodiment, such as Figure 1 As shown, during the battery manufacturing process, the protection plate 2 is placed on the end face of the first end of the battery body 1. The end face of the first end of the protection plate 2 abuts against the end face of the second end of the battery body 1. Since the first tab 111 includes a first vertical segment 1111 and a first horizontal segment 1112, and the second tab 112 includes a second vertical segment 1121 and a second horizontal segment 1122, and both the first vertical segment 1111 and the second vertical segment 1121 extend along the first direction X, the first horizontal segment 1112 and the second horizontal segment 1122 are spaced apart from the end face of the first end of the battery body 1, so that they can be fitted and connected to the end face of the second end of the protection plate 2, thereby facilitating the connection operation. If a welding process is used, it is convenient for the welding head to weld the first horizontal segment 1112 and the second horizontal segment 1122 to the battery body 1, thereby improving the battery manufacturing efficiency.

[0052] In one embodiment, such as Figure 1 As shown, the first vertical segment 1111 of the first electrode 111 and the second vertical segment 1121 of the second electrode 112 are offset along the projection of the second direction Y onto the first plane, wherein the first plane is any plane perpendicular to the second direction Y.

[0053] And / or, the first vertical segment 1111 of the first electrode 111 and the second vertical segment 1121 of the second electrode 112 are offset along the projection of the third direction Z onto the second plane, wherein the second plane is any plane perpendicular to the third direction Z.

[0054] Specifically, such as Figure 1As shown, the width direction of the first tab 111 and the width direction of the second tab 112 are both the same as the second direction Y.

[0055] The "misaligned setting" mentioned above refers to the two objects being set apart, meaning there is no overlap.

[0056] In specific usage, such as Figure 1 As shown, since the positive and negative terminals of the battery body 1 are usually not overlapped along the second direction Y and the third direction Z respectively, i.e., they are staggered, the first tab 111 and the second tab 112 are also staggered along the second direction Y and the third direction Z respectively, so that the first tab 111 and the second tab 112 can be directly connected to the positive and negative terminals of the battery body 1.

[0057] In one embodiment, such as Figure 1 and Figure 2 As shown, the protective plate 2 has a clearance groove 22 on its first side along the third direction Z. The first vertical segment 1111 is attached to the inner wall of the clearance groove 22 along the third direction Z, that is, the included angle between the first vertical segment 1111 and the first horizontal segment 1112 is 90°. The second vertical segment 1121 is attached to the first side of the protective plate 2 along the third direction Z, that is, the included angle between the second vertical segment 1121 and the second horizontal segment 1122 is 90°.

[0058] like Figure 1 As shown, the depth of the clearance groove 22 along the third direction Z is 0.1mm to 0.3mm, preferably any one of 0.1mm, 0.2mm and 0.3mm. Of course, it can also be any other size, which can be selected and set according to the requirements.

[0059] In this embodiment, an avoidance groove 22 is provided on the protection plate 2, which can prevent the first tab 111 or the second tab 112 from needing to be bent and overlap with the protection plate 2 along the first direction X, thereby avoiding the increase of the space occupied by the first tab 111 or the second tab 112 along the first direction X of the battery, and further reducing the size of the battery body 1.

[0060] In one embodiment, such as Figure 3 As shown, the battery also includes a separator 4, which is disposed between the battery body 1 and the protection plate 2. Specifically, the separator 4 is a thin film that isolates electrons, such as a polyethylene separator, a polypropylene separator, a ceramic separator, a glass fiber separator, etc.

[0061] In practical use, by setting an isolation membrane 4 between the battery body 1 and the protection board 2, a safety guarantee can be provided between the battery body 1 and the protection board 2, avoiding leakage of the battery body 1 due to other uncontrollable factors, thereby improving the safety and reliability of the battery.

[0062] In one embodiment, such as Figure 1 As shown, a protection circuit device 23 is provided on the end face of the second end of the protection board 2 along the first direction X, and a plastic encapsulation layer 24 is provided on the end face of the second end of the protection board 2 along the first direction X, with the protection circuit device 23 located inside the plastic encapsulation layer 24.

[0063] It should be noted that the "protection circuit device 23" mentioned above refers to the various electronic components used in the power protection circuit on the protection board 2, such as resistors and diodes.

[0064] Specifically, the molding layer 24 is usually a polymer material layer such as polyester layer or polyamide layer. Different material layers can be selected according to different battery usage scenarios; for example, high temperature resistant material layers and low temperature resistant material layers can be selected in high temperature environment or extremely cold environment respectively.

[0065] In this embodiment, by providing a molding layer 24 on the end face of the second end of the protection board 2 along the first direction X, the protection circuit device 23 on the protection board 2 is molded and protected, which can improve the stability of the protection circuit device 23, avoid deformation during subsequent packaging process, and prevent it from failing, thereby improving the yield rate in the battery manufacturing process.

[0066] In one embodiment, such as Figure 1 As shown, a first notch 241 is provided on the molding layer 24, and the part on the end face of the second end of the protective plate 2 corresponding to the first notch 241 is electrically connected to the first tab 111; and / or, a second notch 242 is provided on the molding layer 24, and the part on the end face of the second end of the protective plate 2 corresponding to the second notch 242 is electrically connected to the second tab 112.

[0067] Specifically, the size of the first notch 241 matches the size of the first horizontal segment 1112 of the first tab 111, and the size of the second notch 242 matches the size of the second horizontal segment 1122 of the second tab 112.

[0068] In the specific battery manufacturing process, such as Figure 1 As shown, by setting the first notch 241 and the second notch 242, the protection circuit device 23 on the protection board 2 can be encapsulated before the protection board 2 is installed on the battery body 1, and then attached to the battery body 1. Then the first tab 111 is welded to the first notch 241 on the protection board 2, and the second tab 112 is welded to the second notch 242 on the protection board 2. This simplifies the operation and improves the yield of battery manufacturing.

[0069] In one embodiment, the packaging shell 3 is an aluminum-plastic film shell, which is a mature product and has a low price.

[0070] The first tab 111 and the second tab 112 are welded to the battery body 1, and the first tab 111 and the second tab 112 are welded to the protection plate 2; the connection method is simple and firm.

[0071] The charge / discharge connector 21 is an FPC connector, which has a mature structure and high versatility.

[0072] The solution of this application will be fully described below with a specific embodiment.

[0073] This embodiment provides a battery, such as Figures 1 to 3 As shown, the battery has a first direction X, a second direction Y and a third direction Z that intersect each other in pairs. The battery includes a battery body 1, a protection board 2, a packaging shell 3 and a separator 4. The specific scheme is as follows.

[0074] like Figure 1 As shown, the battery body 1 is a solid-state battery cell, which is a type of battery that uses solid electrodes and solid electrolytes; specifically, it can be any type of solid-state battery; the battery body 1 has a tab assembly 11 at its first end along the first direction X. Specifically, the tab assembly 11 includes a first tab 111 and a second tab 112. One of the first tab 111 and the second tab 112 is electrically connected to the positive electrode of the battery body 1, and the other is electrically connected to the negative electrode of the battery body 1. Specifically, the first tab 111 and the second tab 112 are both nickel sheets, which are connected to the positive and negative electrodes of the battery body 1 by welding.

[0075] like Figure 1 As shown, the protection board 2 is a board with a protection circuit, specifically a PCB circuit board (PCB, Printed Circuit Board). The first end of the protection board 2 along the first direction X abuts against the end face of the first end of the battery body 1. The protection board 2 is electrically connected to the first tab 111 and the second tab 112 by soldering. The protection board 2 is electrically connected with a charging and discharging connector 21. Specifically, the charging and discharging connector 21 is an FPC connector (FPC, Flexible Printed Circuit). Of course, the charging and discharging connector 21 can also be other types of connectors, as long as they can realize the charging and discharging function.

[0076] like Figure 3 As shown, the battery body 1 and the protection board 2 are located inside the encapsulation shell 3, and the charging and discharging connector 21 penetrates the encapsulation shell 3 and is located outside the encapsulation shell 3. Specifically, the encapsulation shell 3 can be an aluminum-plastic film shell formed by the encapsulation process, or it can be a shell formed by other encapsulation materials through the encapsulation process.

[0077] It should be noted that the angle between any two intersecting directions X, Y, and Z is generally 90°, but it can also be other angles, such as 40° to 90°, specifically 40°, 50°, 60°, 70° and 80°, or any other arbitrary angle.

[0078] More specifically, such as Figure 1 and Figure 3 As shown, along the first direction X, the abutting surfaces of the protection plate 2 and the battery body 1, the connecting ends of the first tab 111 and the battery body 1, and the connecting ends of the second tab 112 and the battery body 1 are all misaligned on the end face of the first end of the battery body 1. That is, the abutting surfaces of the protection plate 2 and the battery body 1, the connecting ends of the first tab 111 and the battery body 1, and the connecting ends of the second tab 112 and the battery body 1 do not overlap along the first direction X.

[0079] More specifically, such as Figure 1 As shown, the first electrode 111 includes a first vertical segment 1111 and a first horizontal segment 1112 connected together, and the second electrode 112 includes a second vertical segment 1121 and a second horizontal segment 1122 connected together. The first vertical segment 1111 and the second vertical segment 1121 both extend along a first direction X, and the first horizontal segment 1112 and the second horizontal segment 1122 both extend along a third direction Z. That is, the first vertical segment 1111 and the second horizontal segment 1122 are obtained by bending, and the included angle of the bend is 90°. Of course, other bending angles are also possible, such as any one of 60°, 65°, 70°, 75°, 80°, 85°, etc. The second vertical segment 1121 and the second horizontal segment 1122 are obtained by bending, and the included angle of the bend is 90°. Of course, other bending angles are also possible, such as any one of 60°, 65°, 70°, 75°, 80°, 85°, etc.

[0080] In the first vertical segment 1111 and the second vertical segment 1121, one of them is electrically connected to the positive electrode of the battery body 1, and the other is electrically connected to the negative electrode of the battery body 1. The first horizontal segment 1112 and the second horizontal segment 1122 are both electrically connected to the second end of the protection plate 2 along the first direction X.

[0081] More specifically, such as Figure 1 As shown, the first vertical segment 1111 of the first electrode 111 and the second vertical segment 1121 of the second electrode 112 are offset along the projection of the second direction Y onto the first plane, and the first vertical segment 1111 of the first electrode 111 and the second vertical segment 1121 of the second electrode 112 are offset along the projection of the third direction Z onto the second plane. The first plane is any plane perpendicular to the second direction Y, and the second plane is any plane perpendicular to the third direction Z.

[0082] like Figure 1 and Figure 2 As shown, the protective plate 2 has a clearance groove 22 on its first side along the third direction Z. The first vertical segment 1111 is attached to the inner wall of the clearance groove 22 along the third direction Z, that is, the included angle between the first vertical segment 1111 and the first horizontal segment 1112 is 90°. The second vertical segment 1121 is attached to the first side of the protective plate 2 along the third direction Z, that is, the included angle between the second vertical segment 1121 and the second horizontal segment 1122 is 90°.

[0083] Specifically, such as Figure 1 As shown, the width direction of the first tab 111 and the width direction of the second tab 112 are both the same as the second direction Y.

[0084] like Figure 1 As shown, the depth of the clearance groove 22 along the third direction Z is 0.1mm to 0.3mm, preferably any one of 0.1mm, 0.2mm and 0.3mm. Of course, it can also be any other size, which can be selected and set according to the requirements.

[0085] The "misaligned setting" mentioned above refers to the two objects being set apart, meaning there is no overlap.

[0086] More specifically, such as Figure 3 As shown, the separator 4 is disposed between the battery body 1 and the protection plate 2. Specifically, the separator 4 is a thin film that isolates electrons, such as polyethylene separator, polypropylene separator, ceramic separator, glass fiber separator, etc.

[0087] More specifically, such as Figure 1 As shown, a protection circuit device 23 is provided on the end face of the second end of the protection board 2 along the first direction X, and a plastic encapsulation layer 24 is provided on the end face of the second end of the protection board 2 along the first direction X, with the protection circuit device 23 located inside the plastic encapsulation layer 24.

[0088] It should be noted that the "protection circuit device 23" mentioned above refers to the various electronic components used in the power protection circuit on the protection board 2, such as resistors and diodes.

[0089] Specifically, the molding layer 24 is usually a polymer material layer such as polyester layer or polyamide layer. Different material layers can be selected according to different battery usage scenarios; for example, high temperature resistant material layers and low temperature resistant material layers can be selected in high temperature environment or extremely cold environment respectively.

[0090] More specifically, such as Figure 1 As shown, the molding layer 24 is provided with a first notch 241 and a second notch 242. The part on the end face of the second end of the protective plate 2 corresponding to the first notch 241 is electrically connected to the first tab 111, and the part on the end face of the second end of the protective plate 2 corresponding to the second notch 242 is electrically connected to the second tab 112.

[0091] Specifically, the size of the first notch 241 matches the size of the first horizontal segment 1112 of the first tab 111, and the size of the second notch 242 matches the size of the second horizontal segment 1122 of the second tab 112.

[0092] More specifically, the packaging shell 3 is an aluminum-plastic film shell, which is a mature product and has a low price.

[0093] The first tab 111 and the second tab 112 are welded to the battery body 1, and the first tab 111 and the second tab 112 are welded to the protection plate 2; the connection method is simple and firm.

[0094] The charge / discharge connector 21 is an FPC connector, which has a mature structure and high versatility.

[0095] According to an embodiment of this application, in a second aspect, a battery pack is provided, including a housing and a battery as described in any embodiment of the first aspect, wherein a receiving cavity is provided inside the housing; and multiple batteries are provided, all located within the receiving cavity.

[0096] Specifically, battery packs can be used in electronic devices, new energy vehicles, energy storage devices, drones, and other power-consuming devices.

[0097] In this embodiment, since the battery pack includes the aforementioned battery, it has the same effect as the battery itself, and will not be described in detail here.

[0098] According to an embodiment of this application, in a third aspect, an electrical device is provided, including a battery as described in any embodiment of the first aspect; or a battery pack as described in the second aspect.

[0099] Specifically, electrical equipment can be electronic devices, electric vehicles, energy storage devices, drones, and other devices that require electricity.

[0100] In this embodiment, since the electrical device includes the aforementioned battery or battery pack and has the same effect as the battery, it will not be described in detail here.

[0101] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A battery having a first direction (X), a second direction (Y) and a third direction (Z) intersecting each other two by two, characterized in that the battery The battery body (1) is a solid-state battery cell, and a first end of the battery body (1) is provided with a tab assembly (11) along the first direction (X). A protection plate (2) abuts against an end surface of the first end of the battery body (1) along the first direction (X), the protection plate (2) is electrically connected with the tab assembly (11), and a charge-discharge connector (21) is electrically connected on the protection plate (2). The battery body (1) and the protection plate (2) are located in the packaging shell (3), and the charge-discharge connector (21) penetrates through the packaging shell (3) and is located outside the packaging shell (3). The tab assembly (11) includes a first tab (111) and a second tab (112), one of the first tab (111) and the second tab (112) is electrically connected with the positive electrode of the battery body (1), and the other is electrically connected with the negative electrode of the battery body (1).

2. The battery of claim 1, wherein, The abutment surface of the protection plate (2) and the battery body (1), the connection end of the first tab (111) and the battery body (1), and the connection end of the second tab (112) and the battery body (1) are all misaligned on the end surface of the first end of the battery body (1) along the first direction (X). The first tab (111) includes a first vertical segment (1111) and a first horizontal segment (1112), and the second tab (112) includes a second vertical segment (1121) and a second horizontal segment (1122). The first vertical segment (1111) and the second vertical segment (1121) both extend along the first direction (X), the first horizontal segment (1112) and the second horizontal segment (1122) both extend along the third direction (Z), one of the first vertical segment (1111) and the second vertical segment (1121) is electrically connected with the positive electrode of the battery body (1), and the other is electrically connected with the negative electrode of the battery body (1). The first horizontal segment (1112) and the second horizontal segment (1122) are both electrically connected with the second end of the protection plate (2) along the first direction (X).

3. The battery of claim 2, wherein, The projections of the first vertical segment (1111) of the first tab (111) and the second vertical segment (1121) of the second tab (112) on the first plane along the second direction (Y) are misaligned, and the first plane is any plane perpendicular to the second direction (Y).

4. The battery of claim 3, wherein, And / or, the projections of the first vertical segment (1111) of the first tab (111) and the second vertical segment (1121) of the second tab (112) on the second plane along the third direction (Z) are misaligned, and the second plane is any plane perpendicular to the third direction (Z). ​ 5. The battery of claim 4, wherein, The protection plate (2) is provided with a relief groove (22) on the first side along the third direction (Z), the first vertical segment (1111) is attached to the inner wall surface of the relief groove (22) along the third direction (Z), and the second vertical segment (1121) is attached to the first side of the protection plate (2) along the third direction (Z).

6. The battery according to any one of claims 3 to 5, characterized in that The protection plate (2) is provided with a protection circuit device (23) on the end surface of the second end along the first direction (X), and is provided with a plastic packaging layer (24) on the end surface of the second end along the first direction (X), and the protection circuit device (23) is located in the plastic packaging layer (24).

7. The battery of claim 6, wherein, The plastic packaging layer (24) is provided with a first notch (241), and the part corresponding to the first notch (241) on the end surface of the second end of the protection plate (2) is electrically connected with the first tab (111). And / or, the plastic packaging layer (24) is provided with a second notch (242), and the part corresponding to the second notch (242) on the end surface of the second end of the protection plate (2) is electrically connected with the second tab (112).

8. The battery according to any one of claims 2 to 5, characterized by Further comprising an isolation film (4), which is arranged between the battery body (1) and the protection plate (2); And / or, the packaging shell (3) is an aluminum plastic film shell; And / or, the first tab (111) and the second tab (112) are welded with the battery body (1), and the first tab (111) and the second tab (112) are welded with the protection plate (2); And / or, the charge-discharge connector (21) is an FPC connector.

9. A battery pack, characterized by, It comprises: An outer shell, which is provided with a containing cavity inside; The battery as claimed in any one of claims 1-8 is provided with a plurality of batteries, which are all located in the containing cavity.

10. An electric device, characterized by It comprises: The battery as claimed in any one of claims 1-8; Or the battery pack as claimed in claim 9.

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