Battery and electric device

Abstract

The invention relates to the technical field of batteries, in particular to a battery and an electric device. The battery comprises a shell, end covers, a pole group, a supporting frame and at least one spacer, openings are formed in the two ends, in the length direction of the battery, of the shell, the end covers cover the openings, the pole group comprises at least two pole group split bodies arranged in the width direction of the battery, and the spacer is clamped between every two adjacent pole group split bodies; the support frame is arranged on the periphery of the pole group and is positioned in the shell; and the pole lugs at the two ends of the pole group split bodies along the length direction of the battery can penetrate through the support frame to be connected with the corresponding end covers. The width of a single pole group split body can be reduced, so that the condition of bending deformation of the pole group due to overlarge width is avoided, and the yield of the pole group is improved; the overall capacity of the battery is improved, and the problems of high structural cost and the like caused by series connection of the pole group split bodies are avoided; by arranging the supporting frame and the spacer, the pole group is supported and protected, so that the pole group is safely fixed, and the pole group is prevented from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery and an electrical device using the same. Background Art

[0002] As an important energy storage device, batteries are widely used in mobile phones, laptop computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, electric tools, and so on.

[0003] A battery includes a pole group for storing and releasing electrical energy. Limited by the capacity increase process conditions, the width of the pole group in the prior art is generally limited. When the pole group is too wide, due to problems such as its large width and difficult support, the pole group often bends and deform, resulting in a reduction in the yield rate; the support of the pole group is unbalanced, and the pole group is prone to damage when it moves.

[0004] Therefore, there is an urgent need for a battery and an electrical device using the same to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a battery and an electrical device using the same, which can shorten the width of a single pole group segment, thereby avoiding the bending and deformation of the pole group due to its excessive width, and improving the yield rate of the pole group; by providing a support frame and a spacer, the support and protection of the pole group can be realized, so as to securely fix the pole group and avoid damage to the pole group.

[0006] To achieve the above purpose, the following technical solutions are provided:

[0007] A battery, comprising:

[0008] A housing having openings at both ends along the length direction of the battery;

[0009] An end cover covering the openings;

[0010] A pole group including at least two pole group segments arranged along the width direction of the battery;

[0011] At least one spacer sandwiched between two adjacent pole group segments;

[0012] A support frame disposed on the outer periphery of the pole group and located within the housing, and the pole tabs at both ends of the pole group segment along the length direction of the battery can pass through the support frame and be connected to the corresponding end cover.

[0013] As an optional solution, the support frame includes:

[0014] The first side plate and the second side plate, the second side plate is arranged on the outer side of the electrode group along the width direction of the battery, the first side plate is arranged on the outer side of the electrode group along the length direction of the battery, and the first side plate is connected to the second side plate.

[0015] As an optional solution, the second side plate includes:

[0016] A first main plate, one end of the first main plate is connected to the first side plate;

[0017] A first fixing portion, which is formed by extending inwards along the width direction of the battery from the end of the first main plate away from the first side plate.

[0018] As an optional solution, a first through hole is provided on the second side plate, the number of the first through holes is multiple, and the multiple first through holes are arranged at intervals along the length direction of the battery.

[0019] As an optional solution, the spacer includes:

[0020] A second main plate, one end of the second main plate is connected to the first side plate;

[0021] A second fixing portion, which is formed by extending along the width direction of the battery from the end of the second main plate away from the first side plate.

[0022] As an optional solution, the spacer includes:

[0023] A second main plate, which is clamped between two adjacent electrode group sub - bodies;

[0024] Multiple rib groups, each rib group includes two ribs, the two ribs are respectively arranged on both sides of the second main plate along the width direction of the battery, and the multiple rib groups are arranged at intervals along the length direction of the battery.

[0025] As an optional solution, a groove is provided between two adjacent ribs, and the groove is formed by inward depression from the end face of the second main plate.

[0026] As an optional solution, the end cover includes:

[0027] A cover plate, which is covered at the opening, and the cover plate is in a long strip shape;

[0028] Supporting protrusions, which extend along the width direction of the cover plate and are arranged at both ends of the cover plate in the length direction.

[0029] As an optional solution, one of the end covers further includes:

[0030] A conductive member is embedded in the cover plate, the negative electrode ear of the electrode group is connected to the conductive member, and the conductive member is made of the same material as the negative electrode ear.

[0031] An electric device includes an electric device body, and the electric device also includes the above-mentioned battery, wherein the battery is configured to supply power to the electric device body.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The battery provided by the present invention divides the electrode group into a plurality of electrode group components arranged along the width direction of the battery so as to shorten the width of a single electrode group component, thereby avoiding bending and deformation of the electrode group due to excessive width, thereby improving the yield of the electrode group; the electrode group components are connected to the end covers at both ends along the length direction of the battery by connecting the electrode ears and end covers, that is, the electrode group components are connected in parallel, which can increase the overall capacity of the battery and avoid problems such as high structural cost caused by series connection between the electrode group components; support and protection of the electrode group are achieved by providing a support frame arranged on the periphery of the electrode group and a spacer sandwiched between two adjacent electrode group components, so as to securely fix the electrode group and avoid damage to the electrode group.

[0034] The electric device provided by the present invention improves the battery yield and avoids electrode group damage by applying the above-mentioned battery, has a higher battery capacity, and improves the endurance of the electric device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0036] Figure 1 An exploded view of a battery provided in Example 1 of the present invention;

[0037] Figure 2 A schematic structural diagram of a support frame and a spacer provided in Example 1 of the present invention;

[0038] Figure 3 A schematic structural diagram of an end cap provided in Embodiment 1 of the present invention;

[0039] Figure 4 An exploded view of a battery provided in Example 2 of the present invention;

[0040] Figure 5 A schematic structural diagram of a support frame and a spacer provided in the second embodiment of the present invention;

[0041] Figure 6 Structural schematic diagram of the end cap provided in the second embodiment of the present invention;

[0042] Figure 7 Structural schematic diagram of the electrode component body, support frame and spacer provided in the third embodiment of the present invention;

[0043] Figure 8 Structural schematic diagram of the end cap provided in the third embodiment of the present invention;

[0044] Figure 9 Cross-sectional view of the end cap provided in the third embodiment of the present invention;

[0045] Figure 10 Structural schematic diagram of the vehicle provided in the fourth embodiment of the present invention.

[0046] Reference numerals:

[0047] 1000, vehicle;

[0048] 100, battery;

[0049] 10, housing; 11, first explosion-proof hole;

[0050] 20, end cap; 2001, second explosion-proof hole; 21, cover plate; 22, lower plastic part; 221, avoidance hole; 23, fixing part; 24, support protrusion; 25, conductive part;

[0051] 30, electrode group; 31, electrode component body;

[0052] 40, insulating film; 41, through groove;

[0053] 50, support frame; 5001, through hole; 51, first side plate; 52, second side plate; 5201, first through hole; 521, first main body plate; 522, first fixing part; 53, connecting part;

[0054] 60, spacer; 6001, second through hole; 6002, groove; 61, second main body plate; 62, second fixing part; 63, rib;

[0055] 200, controller; 300, motor. Detailed implementation manners

[0056] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. A lot of specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0057] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0058] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plural" appears, the meaning of "plural" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0059] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "couple", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0060] In this application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or diagonally above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or diagonally below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0061] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0062] Embodiment 1

[0063] As Figure 1 shown, this embodiment provides a battery 100, which includes a housing 10 and a pole group 30. The pole group 30 is disposed in the housing 10, and the housing 10 is used to support and protect the pole group 30. The housing 10 can be made of plastic or metal materials. When the housing 10 is made of metal materials, it has good heat dissipation performance and high strength, and can play a supporting role by itself.

[0064] In this embodiment, openings are provided at both ends of the housing 10 along the Y direction (the length direction of the battery). The battery 100 further includes two end caps 20, and the two end caps 20 are respectively covered at the corresponding openings. The pole group 30 is connected to the end caps 20, and the end caps 20 are connected to the main body of the external electrical device, so as to realize the power supply function of the battery 100 to the main body of the electrical device. In other embodiments, the number of the end caps 20 can also be one, and there is one opening provided in the housing 10, and the end cap 20 is covered at the opening.

[0065] Limited by the process conditions of capacity increase, the pole groups in the prior art generally have limited width. When the pole group is too wide, due to problems such as its large width and difficult support, the pole group often has bending deformation, resulting in a reduction in the yield rate; the support of the pole group is unbalanced, and the pole group is prone to damage when it moves.

[0066] To solve the above problems, as Figure 1 and Figure 2As shown in the figure, the battery 100 provided in this embodiment further includes a support frame 50 and at least one spacer 60. The electrode group 30 includes at least two electrode sub-assemblies 31 arranged along the X direction (the width direction of the battery 100). The spacer 60 is clamped between two adjacent electrode sub-assemblies 31. The support frame 50 is disposed on the outer periphery of the electrode group 30 and is located within the housing 10. The electrode tabs at both ends of the electrode sub-assembly 31 along the Y direction (the length direction of the battery 100) can pass through the support frame 50 and be connected to the corresponding end cap 20.

[0067] For the battery 100 provided in this embodiment, by dividing the electrode group 30 into multiple electrode sub-assemblies 31 arranged along the width direction of the battery 100, it is convenient to shorten the width of a single electrode sub-assembly 31, thereby avoiding the bending deformation of the electrode group 30 due to excessive width and improving the yield of the electrode group 30; by connecting the electrode tabs at both ends of the electrode sub-assembly 31 along the length direction of the battery 100 to the end cap 20, that is, the electrode sub-assemblies 31 are connected in parallel, the overall capacity of the battery 100 can be increased, and problems such as high structural costs caused by series connection between the electrode sub-assemblies 31 are avoided; by providing the support frame 50 on the outer periphery of the electrode group 30 and the spacer 60 clamped between two adjacent electrode sub-assemblies 31, the support and protection of the electrode group 30 are realized, so as to securely fix the electrode group 30 and avoid damage to the electrode group 30.

[0068] The electrode sub-assembly 31 in this application can be formed by winding or made in a stacked manner. Generally, the electrode sub-assembly 31 at least includes a positive electrode plate, a separator, and a negative electrode plate.

[0069] Optionally, the support frame 50 includes a first side plate 51 and a second side plate 52. The second side plate 52 is disposed on the outer side of the electrode group 30 along the X direction, and the first side plate 51 is disposed on the outer side of the electrode group 30 along the Y direction. The first side plate 51 is connected to the second side plate 52, and the support for the sides of the electrode group 30 is realized through the first side plate 51 and the second side plate 52, so as to prevent the sides of the electrode group 30 from directly contacting the inner wall of the housing 10.

[0070] In this embodiment, the number of the second side plates 52 is two, and the number of the first side plates 51 is one. The two second side plates 52 are respectively located at both ends of the electrode group 30 along the X direction, and the first side plate 51 is disposed at one end of the electrode group 30 along the Y direction to realize the support for three sides of the electrode group 30.

[0071] Optionally, the second side plate 52 includes a first main plate 521 and a first fixing portion 522. One end of the first main plate 521 is connected to the first side plate 51, and the first fixing portion 522 extends inward along the X direction from the end of the first main plate 521 away from the first side plate 51. By providing the first fixing portion 522, the fixing effect of the support frame 50 on the electrode group 30 is improved.

[0072] Optionally, the support frame 50 is made of an insulating material to insulate the electrode group 30 from the inner wall of the housing 10, thereby improving the safety performance of the battery 100.

[0073] Optionally, the support frame 50 is made by injection molding, which has high production efficiency and good product quality.

[0074] Optionally, the spacer 60 is made of an insulating material. The adjacent two electrode group sub - bodies 31 can be directly isolated through the spacer 60 to maintain insulation between the adjacent two electrode group sub - bodies 31 and prevent short - circuit inside the electrode group 30.

[0075] Optionally, the spacer 60 includes a second main body plate 61 and a second fixing part 62. One end of the second main body plate 61 is connected to the first side plate 51, and the second fixing part 62 extends along the X direction from the end of the second main body plate 61 away from the first side plate 51. The second fixing part 62 cooperates with the first fixing part 522 to improve the fixing and supporting effects on the electrode group sub - body 31.

[0076] Optionally, the spacer 60 and the support frame 50 are integrally formed to improve the overall strength of the support frame 50 and the spacer 60, reduce the number of parts, simplify the assembly process, and make the installation simple.

[0077] As Figure 1 and Figure 3 shown, the end cover 20 includes a cover plate 21, a lower plastic part 22 and a fixing part 23. The housing 10 has an opening, the cover plate 21 is covered on the opening, the lower plastic part 22 is arranged on the side of the cover plate 21 facing the electrode group 30, and the lower plastic part 22 is connected to the cover plate 21 through the fixing part 23. By providing the lower plastic part 22, the battery 100 is prevented from short - circuiting, and the safety performance of the battery 100 is further improved.

[0078] Optionally, the fixing part 23 fixes the lower plastic part 22 to the cover plate 21 by injection molding or ultrasonic hot melting to ensure the stable connection between the lower plastic part 22 and the cover plate 21.

[0079] Optionally, the lower plastic part 22 has a flat - plate structure to facilitate better adhesion to the cover plate 21 and prevent problems such as pole ear jamming caused by excessive gap between the two. In addition, the flat - plate - shaped lower plastic part 22 can support the electrode group 30 more evenly.

[0080] Optionally, the cover plate 21 is made of a light aluminum plate. The light aluminum plate has advantages such as being easy to process and form, having a light weight, and good thermal conductivity.

[0081] Optionally, a polarity mark is provided on the cover plate 21. The polarity mark is used to label the positive and negative poles of the battery 100 to facilitate the distinction between the positive and negative poles of the battery 100.

[0082] Optionally, the lower plastic part 22 is provided with an avoidance hole 221, and the first side plate 51 is provided with a through hole 5001. The number of through holes 5001 is multiple, and the multiple through holes 5001 are arranged at intervals in the X direction. The tab of the electrode sub - body 31 at one end of the electrode group 30 in the Y direction passes through the corresponding through hole 5001 and then passes through the avoidance hole 221 and is connected to the cover plate 21. By setting the through hole 5001, the support frame 50 can avoid the tab, and by setting the avoidance hole 221, the lower plastic part 22 can avoid the tab.

[0083] In this embodiment, there is a gap between the first fixing part 522 and the second fixing part 62, and this gap forms the through hole 5001. The tab of the electrode sub - body 31 at the other end of the electrode group 30 in the Y direction passes through the corresponding through hole 5001 and is connected to the cover plate 21. In other embodiments, when the number of electrode sub - bodies 31 is greater than or equal to three, correspondingly, the number of spacers 60 is greater than or equal to two. At this time, at one end away from the first side plate 51, through holes 5001 located at both ends in the X direction are formed between the first fixing part 522 and the second fixing part 62, and a through hole 5001 located in the middle is formed between the second fixing part 62 of one spacer 60 and the second fixing part 62 of another spacer 60.

[0084] As Figure 1 shown, the battery 100 further includes an insulating film 40. The insulating film 40 covers the outer periphery of the electrode group 30 and the support frame 50 and is located inside the housing 10. After the electrode group 30 and the support frame 50 are assembled, the insulating film 40 is covered, and then the electrode group 30 and the support frame 50 covered with the insulating film 40 are installed in the housing 10. The insulating film 40 improves the insulation protection ability of the electrode group 30. Specifically, the insulating film 40 is a mylar film.

[0085] Optionally, through slots 41 are provided at both ends of the insulating film 40 in the Y direction, so that the tabs of the electrode sub - bodies 31 can extend out of the insulating film 40 through the corresponding through slots 41.

[0086] Optionally, the housing 10 is provided with a first explosion - proof hole 11, and the cover plate 21 is provided with a second explosion - proof hole 2001. Explosion - proof valves are arranged in both the first explosion - proof hole 11 and the second explosion - proof hole 2001. When an abnormality occurs inside the battery 100, after the air pressure inside the housing 10 reaches the explosion - proof threshold of the explosion - proof valve, the explosion - proof valve opens, and the gas is discharged from the first explosion - proof hole 11 and the second explosion - proof hole 2001, releasing the internal pressure of the housing 10 and preventing the battery 100 from thermal runaway and explosion and fire, improving the use safety of the battery 100.

[0087] In this embodiment, the first explosion-proof hole 11 is provided on one side of the housing 10 along the Z direction (the thickness direction of the battery 100), and is located at a position between two adjacent pole component bodies 31, so as to shorten the gas discharge path, reduce the gas discharge travel, improve the exhaust efficiency, and enhance the safety performance of the battery 100. In other embodiments, the setting position and specific number of the first explosion-proof hole 11 can be adaptively selected according to actual needs, and are not limited herein.

[0088] Optionally, the insulating film 40 is provided with slits, and the slits are respectively aligned with the first explosion-proof hole 11 and the second explosion-proof hole 2001, so as to facilitate the rapid discharge of the gas in the pole group 30 from the slits.

[0089] Embodiment Two

[0090] This embodiment provides a battery 100. The specific structure of this battery 100 is basically the same as that of the battery 100 in Embodiment One, except that: the specific structures of the end cover 20, the support frame 50 and the spacer 60 are different.

[0091] As Figure 4 and Figure 5 shown, the support frame 50 includes two first side plates 51 arranged along the Y direction and two second side plates 52 arranged along the X direction. The first side plates 51 and the second side plates 52 are connected end to end to form a frame structure, so as to support the four sides of the pole group 30 and improve the support and protection effects on the pole group 30.

[0092] Each first side plate 51 is provided with a plurality of through holes 5001, and the through holes 5001 are arranged at intervals along the X direction and are arranged corresponding to the pole component bodies 31 one by one.

[0093] Optionally, the second side plate 52 is provided with a plurality of first through holes 5201. The first through holes 5201 are arranged at intervals along the length direction of the battery 100 to facilitate exhaust, and further improve the safety performance of the battery 100.

[0094] As Figure 5 shown, one end of the spacer 60 along the Y direction is connected to one first side plate 51, and the other end is connected to the other first side plate 51 to improve the support and protection effects on the pole component body 31.

[0095] Optionally, the spacer 60 and the support frame 50 are integrally formed to improve the structural strength of the spacer 60 and the support frame 50.

[0096] Optionally, the spacer 60 is provided with a plurality of second through holes 6001. The second through holes 6001 are arranged at intervals along the length direction of the battery 100 to facilitate exhaust, and further improve the safety performance of the battery 100.

[0097] Optionally, the support frame 50 further includes a connecting member 53. The connecting member 53 extends along the X direction. One end of the connecting member 53 is connected to one of the second side plates 52, and the other end is connected to the other second side plate 52 to improve the overall strength of the support frame 50, and further improve the support and protection effects on the electrode component body 31.

[0098] Optionally, the connecting member 53 is located on one side of the second side plate 52 along the Z direction, so as to avoid the connecting member 53 occupying the internal space of the support frame 50, and further improve the space utilization rate of the battery 100.

[0099] In this embodiment, the number of the connecting members 53 is one. In other embodiments, the number of the connecting members 53 can also be two, three or more. The multiple connecting members 53 are arranged at intervals along the Y direction.

[0100] As Figure 4 and Figure 6 shown, the end cover 20 includes a cover plate 21 and support protrusions 24. The cover plate 21 covers the opening. The cover plate 21 is in a long strip shape. The support protrusions 24 extend along the width direction of the cover plate 21 and are arranged at both ends of the cover plate 21 in the length direction. The support protrusions 24 are in contact with the first side plate 51. By providing the support protrusions 24 on the cover plate 21, on the one hand, the strength of the cover plate 21 in the width direction can be improved to avoid deformation of the cover plate 21; on the other hand, an exhaust channel can be formed between the cover plate 21 and the first side plate 51 to facilitate exhaust, and further improve the use safety of the battery 100; in addition, the support protrusions 24 are in contact with the first side plate 51, and there is no need to separately provide a lower plastic, which simplifies the assembly steps and improves the space utilization rate.

[0101] Embodiment III

[0102] This embodiment provides a battery 100. The specific structure of this battery 100 is basically the same as that of the battery 100 in Embodiment II, except that: the specific structures of the end cover 20, the support frame 50 and the spacer 60 are different.

[0103] As Figure 7 shown, the spacer 60 includes a second main body plate 61 and multiple rib groups. The second main body plate 61 is clamped between two adjacent electrode component bodies 31. Each rib group includes two ribs 63. The two ribs 63 are respectively arranged on both sides of the second main body plate 61 along the width direction of the battery 100. The multiple rib groups are arranged at intervals along the length direction of the battery 100. By providing the ribs 63, there is a gap between the second main body plate 61 and the electrode component body 31, and this gap can facilitate exhaust and electrolyte infiltration of the electrode component body 31.

[0104] Optionally, a groove 6002 is provided between two adjacent convex rib groups. The groove 6002 is formed by inward depression from the end face of the second main body plate 61. By providing the groove 6002 on the second main body plate 61, the weight of the spacer 60 can be reduced, and thus the weight of the battery 100 can be reduced, which is beneficial to the lightweight design of the battery 100.

[0105] As Figure 7 shown, the support frame 50 includes two first side plates 51 arranged along the Y direction and two second side plates 52 arranged along the X direction. The first side plates 51 and the second side plates 52 are connected end to end to form a frame structure, so as to support the four sides of the electrode group 30 and improve the support and protection effects on the electrode group 30.

[0106] In this embodiment, the first side plate 51 and the spacer 60 are separately provided, which is beneficial to reducing the production cost.

[0107] As Figure 8 and Figure 9 shown, the end cover 20 includes a cover plate 21 and support protrusions 24. The cover plate 21 covers the opening. The cover plate 21 is in a long strip shape. The support protrusions 24 extend along the width direction of the cover plate 21 and are provided at both ends in the length direction of the cover plate 21. The support protrusions 24 are in contact with the first side plate 51. By providing the support protrusions 24 on the cover plate 21, on the one hand, the strength of the cover plate 21 in the width direction can be improved to prevent the cover plate 21 from deforming; on the other hand, an exhaust channel can be formed between the cover plate 21 and the first side plate 51 to facilitate exhaust, and thus the use safety of the battery 100 can be improved; in addition, the support protrusions 24 are in contact with the first side plate 51, so there is no need to separately provide a lower plastic, which simplifies the assembly steps and improves the space utilization rate.

[0108] In this embodiment, the end cover 20 located at the negative electrode tab of the electrode group split body 31 further includes a conductive member 25. The conductive member 25 is embedded in the cover plate 21. The negative electrode tab of the electrode group split body 31 is connected to the conductive member 25. The material of the conductive member 25 is the same as that of the negative electrode tab. Specifically, the negative electrode tab and the conductive member 25 are connected by welding. By setting the material of the conductive member 25 to be the same as that of the negative electrode tab, the welding process difficulty between the negative electrode tab and the conductive member 25 can be reduced, the welding strength can be increased (the welding effect of the same material is better), and the internal resistance at the welding point can be reduced.

[0109] Embodiment Four

[0110] This embodiment provides an electrical device, which includes an electrical device main body and the battery 100 provided in Embodiment One, Embodiment Two or Embodiment Three. The battery 100 can provide electrical energy for the electrical device main body, and thus the electrical device main body can automatically complete a preset action through electrical energy, ensuring good use performance of the electrical device main body, and ensuring the service life and safety performance of the electrical device.

[0111] Specifically, the electrical device main body can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy or an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle or a hybrid electric vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle and a spaceship, etc.; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy and an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, for example, an electric drill, an electric grinding wheel, an electric wrench, an electric screwdriver, a hammer drill, an impact electric drill, a concrete vibrator or a planer, etc. This embodiment does not limit the above-mentioned electrical device main body.

[0112] For the convenience of description in the following embodiments, as Figure 10 shown, an electrical device in an embodiment of the present application, taking a vehicle 1000 as an example, is described. Inside the vehicle 1000, there is a battery 100, and the battery 100 can be arranged at the bottom, head or tail of the vehicle 1000. The number of the batteries 100 can be one or more, and the multiple batteries 100 can be connected in series, in parallel or in a mixed connection, and the mixed connection means that there are both series and parallel connections among the multiple batteries 100.

[0113] The battery 100 can be used for supplying power to the vehicle 1000. For example, the battery 100 can be used as the operating power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300, for example, for the working power requirements during the start, navigation and driving of the vehicle 1000.

[0114] In some embodiments of the present application, the battery 100 can not only be used as the operating power source of the vehicle 1000, but also be used as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0115] Note that in the description of this specification, the descriptions referring to the reference terms "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0116] The above are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A battery, characterized in that: include: A housing (10), wherein the housing (10) has openings at both ends along the length direction of the battery; an end cover (20) disposed on the opening; A pole group (30) comprising at least two pole group components (31) arranged along the width direction of the battery; at least one spacer (60), the spacer (60) being sandwiched between two adjacent pole group components (31); A support frame (50) is arranged on the periphery of the electrode group (30) and is located in the housing (10), and the electrode tabs at both ends of the electrode group components (31) along the length direction of the battery can pass through the support frame (50) and be connected to the corresponding end caps (20).

2. The battery according to claim 1, characterized in that The support frame (50) comprises: A first side plate (51) and a second side plate (52), wherein the second side plate (52) is arranged outside the electrode group (30) along the width direction of the battery, and the first side plate (51) is arranged outside the electrode group (30) along the length direction of the battery, and the first side plate (51) is connected to the second side plate (52).

3. The battery according to claim 2, characterized in that The second side plate (52) comprises: a first main body plate (521), one end of the first main body plate (521) being connected to the first side plate (51); The first fixing portion (522) is formed by extending inwardly along the width direction of the battery from one end of the first main plate (521) away from the first side plate (51).

4. The battery according to claim 2, characterized in that The second side plate (52) is provided with a first through hole (5201), and the number of the first through holes (5201) is multiple, and the multiple first through holes (5201) are arranged at intervals along the length direction of the battery.

5. The battery according to claim 2, characterized in that The spacer (60) comprises: a second main body plate (61), one end of the second main body plate (61) being connected to the first side plate (51); The second fixing portion (62) is formed by extending from one end of the second main plate (61) away from the first side plate (51) along the width direction of the battery.

6. The battery according to claim 1, characterized in that The spacer (60) comprises: A second main body plate (61) is sandwiched between two adjacent pole group components (31); A plurality of rib groups, each of the rib groups includes two ribs (63), the two ribs (63) are respectively arranged on both sides of the second main body plate (61) along the width direction of the battery, and the plurality of rib groups are arranged at intervals along the length direction of the battery.

7. The battery according to claim 6, characterized in that A groove (6002) is provided between two adjacent ribs (63), and the groove (6002) is formed by an inward depression of the end surface of the second main body plate (61).

8. The battery according to any one of claims 1 to 7, characterized in that: The end cap (20) comprises: A cover plate (21) is arranged to cover the opening, and the cover plate (21) is in the shape of an elongated strip; The supporting protrusions (24) extend along the width direction of the cover plate (21) and are arranged at both ends of the length direction of the cover plate (21).

9. The battery according to claim 8, characterized in that One of the end caps (20) further comprises: A conductive member (25) is embedded in the cover plate (21), the negative electrode ear of the electrode component (31) is connected to the conductive member (25), and the conductive member (25) is made of the same material as the negative electrode ear.

10. An electrical device, comprising an electrical device body, characterized in that: The electrical device further comprises a battery as claimed in any one of claims 1 to 9, wherein the battery is configured to supply power to the electrical device body.

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