Enclosure frame, battery and electric device

Abstract

The embodiment of the utility model provides an enclosure frame, a battery and a power utilization device, and belongs to the technical field of batteries. The enclosure frame comprises two end plates and two side plates, the two end plates and the two side plates are arranged in a separated mode, the two end plates are oppositely arranged in the first direction, the two side plates are oppositely arranged in the second direction, the side plates are provided with clamping hooks, the end plates are provided with installation grooves, and the clamping hooks are matched with the installation grooves. And the plug pin is used for limiting the clamping hook to be separated from the mounting groove. Through the arrangement of the clamping hooks, the mounting grooves and the plug pins, assembly between the end plates and the side plates is achieved, compared with a traditional welding scheme, the defects of hole blasting, welding deviation, insufficient welding, undercut and the like possibly occurring in the welding process are reasonably overcome, the binding force between the end plates and the side plates is enhanced, and therefore the yield of batteries is remarkably increased, and the production cost is reduced. And meanwhile, the equipment investment cost and the reworking cost in the processing and manufacturing process are remarkably reduced, so that the production cost of the battery is greatly saved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a frame, a battery and an electrical device. Background Art

[0002] In the existing battery production process, the side plate and end plate assembly process usually requires welding to achieve a fixed connection between the end plates, and laser self-melting welding or wire filling welding is generally used. However, certain welding defects may occur in the welding process, such as blowouts, weld deviation, cold welds, undercuts, etc., resulting in insufficient bonding strength between the side plate and the end plate, which increases the rework cost of the battery to a certain extent, and may even cause the battery to be scrapped, increasing production costs. Utility Model Content

[0003] The present application provides a frame, a battery and an electrical device to enhance the bonding force between the end plate and the side plate, increase the yield rate of the battery, improve the production efficiency of the battery, reduce the equipment investment cost and rework cost in the processing and manufacturing process, and save the production cost of the battery.

[0004] In a first aspect, an embodiment of the present application provides a frame, which is applied to a battery, comprising:

[0005] Two end plates and two side plates are arranged separately, the two end plates are arranged opposite to each other along a first direction, the two side plates are arranged opposite to each other along a second direction, the side plates are provided with hooks, the end plates are provided with mounting grooves, the hooks are matched with the mounting grooves;

[0006] A latch is used to limit the hook from leaving the installation slot.

[0007] In the above technical solution, the assembly between the end plate and the side plate is achieved through the setting of the above-mentioned hooks, mounting grooves and pins. Compared with the traditional welding solution, it can reasonably avoid defects such as blowouts, welding deviations, cold welds and undercuts that may occur during welding, and enhance the bonding strength between the end plate and the side plate, thereby significantly increasing the yield rate of the battery, and thus improving the production efficiency of the battery, while significantly reducing the equipment investment cost and rework cost in the processing and manufacturing process, thereby greatly saving the production cost of the battery.

[0008] In some embodiments, the hook is provided with a first limiting groove, and the end plate is provided with a second limiting groove, and the second limiting groove intersects with the installation groove, wherein the first limiting groove and the second limiting groove are open to a third direction, and the opening direction of the installation groove intersects with the third direction.

[0009] In the above technical solution, through the setting of the first limiting groove and the second limiting groove, a limiting connection between the pin and the end plate and the side plate is realized, thereby enhancing the bonding force between the end plate and the side plate. Compared with the solution in which the pin passes through the end plate and the hook, the structural strength of the end plate and the side plate is improved, and the reliability of the entire frame is increased, thereby significantly increasing the yield rate of the battery, and then improving the production efficiency of the battery, while significantly reducing the equipment investment cost and rework cost in the processing and manufacturing process, thereby greatly saving the production cost of the battery.

[0010] In some embodiments, the length of the mounting groove along the third direction is greater than the length of the hook along the third direction.

[0011] In the above technical solution, through the design of the length relationship between the above-mentioned installation groove and the hook, a certain space can be reserved for removing the pin after the hook and the installation groove are assembled, thereby preventing the pin from being hidden as a whole in the first limit groove and the second limit groove, making it difficult to find a suitable force point during disassembly, thereby reducing the difficulty of operation during the disassembly process and improving the maintainability of the entire frame.

[0012] In some embodiments, the length H1 of the mounting groove along the third direction and the length H2 of the hook along the third direction satisfy: 0 mm

[0013] In some embodiments, the first limiting grooves are provided on both sides of the hook along the third direction, and the second limiting grooves are provided on both sides of the end plate along the third direction.

[0014] In some embodiments, the second limiting groove passes through the end plate along the third direction.

[0015] In some embodiments, the latch does not protrude from the second limiting groove along the third direction.

[0016] In some embodiments, the mounting groove is perpendicular to the second limiting groove.

[0017] In some embodiments, the latch has an interference fit with the first limiting groove and the second limiting groove, and the hook has an interference fit with the installation groove.

[0018] In some embodiments, a first guide portion is provided on the inner wall of the notch of the installation slot, and the surface of the first guide portion is an arc surface.

[0019] In some embodiments, a second guide portion is provided on the wall surface close to the outer side of the notch of the installation slot, and the surface of the second guide portion is a plane and is bent relative to the outer wall surface of the adjacent end plate.

[0020] ​In some embodiments, a third guide portion is provided on one side of the latch pin along the third direction close to the hook, and a surface of the third guide portion is a plane and is bent relative to an outer wall surface of an adjacent latch pin.

[0021] In a second aspect, an embodiment of the present application provides a battery, comprising:

[0022] A frame as any of the above;

[0023] A plurality of battery cells are stacked and arranged in the surrounding frame.

[0024] In a third aspect, an embodiment of the present application provides an electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0027] Figure 2 One of the structural schematic diagrams of the enclosure provided in some embodiments of the present application;

[0028] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0029] Figure 4 A second schematic diagram of the structure of the enclosure provided in some embodiments of the present application;

[0030] Figure 5 for Figure 4 A magnified view of the structure at B in the middle;

[0031] Figure 6 A schematic diagram of the structure of an end plate provided in some embodiments of the present application;

[0032] Figure 7 A schematic diagram of the structure of the side panels provided in some embodiments of the present application;

[0033] Figure 8 A schematic diagram of the structure of a latch provided in some embodiments of the present application.

[0034] Reference numerals:

[0035] Vehicle 1, battery 10, motor 20, controller 30;

[0036] Frame 11;

[0037] End plate 111, mounting groove 1111, second limiting groove 1112, first guide portion 1113, second guide portion 1114;

[0038] Side plate 112, hook 1121, first limiting groove 1122;

[0039] The latch 113 and the third guide portion 1131 . DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are 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 are within the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0042] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0045] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0046] The battery cells mentioned in the embodiments of the present application may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., which are not limited in the embodiments of the present application. The battery cells may be cylindrical, flat, rectangular or other shapes, etc., which are not limited in the embodiments of the present application. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, which are not limited in the embodiments of the present application.

[0047] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells or multiple battery modules. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0048] The battery cell includes a shell, an electrode assembly and an electrolyte, and the shell is used to contain the electrode assembly and the electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as a positive electrode ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector not coated with the negative electrode active material layer protrudes from the negative electrode current collector coated with the negative electrode active material layer. The negative electrode current collector not coated with the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that a large current passes without melting, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together.

[0049] The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a stacked structure, but the embodiments of the present application are not limited thereto.

[0050] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. The battery consists of a frame and multiple battery cells contained in the frame. Among them, batteries, as core components of new energy vehicles, have high requirements in terms of safety and cycle life.

[0051] The inventors found that in a general power battery, the frame may include side plates and end plates, which enclose a space for accommodating battery cells. In the manufacturing process of the battery, in order to ensure the strength of the frame, the connection between the side plates and the end plates is usually fixed by welding. However, when the side plates and the end plates are welded, it is easy to have problems such as explosion holes, cold welding, and collapse, which in turn affects the strength of the weld, resulting in insufficient strength of the frame, thereby affecting the assembly yield rate and resulting in low production efficiency. In addition, due to the investment in welding equipment and the reduction in the qualified rate of the frame, the manufacturing cost of the battery is too high, which is not conducive to cost control.

[0052] Based on the above considerations, in order to solve the problem of low battery yield and high manufacturing cost caused by insufficient strength of the frame, the inventor has designed a frame for battery after in-depth research. The frame includes: a latch, two end plates and two side plates arranged separately, the two end plates are arranged opposite to each other along a first direction, the two side plates are arranged opposite to each other along a second direction, the side plates are provided with hooks, the end plates are provided with mounting grooves, and the hooks cooperate with the mounting grooves; the latch is used to limit the hooks from being separated from the mounting grooves.

[0053] In the frame of this structure, the end plate and the side plate are fixed by using a connection structure similar to a mortise and tenon structure. This structure can avoid defects such as blowouts, weld deviation, cold welds and undercuts that may occur in welding methods, significantly increase the yield of the battery, and is conducive to the large-scale production of batteries and the improvement of battery production efficiency. On the other hand, it does not require expensive welding equipment and reduces the rework rate of the battery, thereby greatly saving the production cost of the battery.

[0054] The battery disclosed in the embodiment of the present application can be used in, but is not limited to, electrical devices such as vehicles, ships or aircraft. A power supply system comprising the battery thermal management system disclosed in the present application and batteries etc. can be used to form the electrical device, which is conducive to improving the scope of application of the battery thermal management system and reducing the difficulty of assembling the battery thermal management system.

[0055] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0056] For the convenience of description, the following embodiments are described by taking a vehicle 1 as an example of an electrical device in an embodiment of the present application.

[0057] like Figure 1 As shown, it is a structural schematic diagram of a vehicle 1 according to an embodiment of the present application. The vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor 20, a controller 30 and a battery 10 may be arranged inside the vehicle 1. The controller 30 is used to control the battery 10 to supply power to the motor 20. For example, a battery 10 may be arranged at the bottom, front or rear of the vehicle 1. The battery 10 may be used to power the vehicle 1. For example, the battery 10 may be used as an operating power source for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power requirements during the start-up, navigation and operation of the vehicle 1. In another embodiment of the present application, the battery 10 may not only be used as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0058] In order to meet different power usage requirements, the battery 10 may include a plurality of battery cells, wherein the plurality of battery cells 12 may be connected in series, in parallel, or in hybrid connection, where hybrid connection refers to a mixture of series connection and parallel connection.

[0059] The battery 10 includes a battery cell for being accommodated in a box. The box is used to provide an assembly space for the battery cell, and the box can adopt a variety of structures. In some embodiments, the box may include a first box body and a second box body, the first box body and the second box body cover each other, and the first box body and the second box body jointly define an assembly space for accommodating the battery cell. The second box body can be a hollow structure with one end open, the first box body can be a plate-like structure, and the first box body covers the open side of the second box body, so that the first box body and the second box body jointly define an assembly space; the first box body and the second box body can also be hollow structures with one side open, and the open side of the first box body covers the open side of the second box body. Of course, the box formed by the first box body and the second box body can be a variety of shapes, such as a cylinder, a cuboid, etc.

[0060] The surrounding frame may be a part of the box, or the surrounding frame may be arranged in the box.

[0061] In the battery 10, multiple battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by multiple battery cells is accommodated in a box; of course, the battery 10 can also be a battery module formed by connecting multiple battery cells in series, in parallel, or in a mixed connection, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in a box. The battery 10 can also include other structures. For example, the battery 10 can also include a converging component for realizing electrical connection between multiple battery cells.

[0062] According to some embodiments of the present application, referring to Figure 2 , and please refer to Figure 4 The present application provides a frame 11 applied to a battery 10 , the frame 11 comprising: a latch 113 , two end plates 111 and two side plates 112 arranged separately.

[0063] like Figure 2-Figure 5 As shown, the two end plates 111 are arranged opposite to each other along the first direction, and the two side plates 112 are arranged opposite to each other along the second direction. The side plates 112 are provided with hooks 1121, and the end plates 111 are provided with mounting grooves 1111. The hooks 1121 cooperate with the mounting grooves 1111; the latches 113 are used to limit the hooks 1121 from being separated from the mounting grooves 1111.

[0064] The shape of the plug 113 may include but is not limited to a cylindrical, square or prism shape. For example, in some embodiments, Figure 8 As shown, the shape of the latch 113 is a square.

[0065] The following describes the embodiments of the present application in detail from three different implementation perspectives.

[0066] First, the latch 113 is assembled to the end plate 111 and the side plate 112 along the third direction.

[0067] In this embodiment, if Figure 2-Figure 5 As shown, the mounting groove 1111 can be located on both sides of the end plate 111 along the first direction or at both ends along the second direction, and the latch 113 can be installed on the end plate 111 and the side plate 112 along the third direction. At this time, the mounting groove 1111 can pass through the entire end plate 111 along the third direction, and the latch 113 combined with the end plate 111 can limit the displacement of the hook 1121 of the side plate 112 in the first direction, the second direction and the third direction.

[0068] 2. The latch pin 113 penetrates the end plate 111 and the hook 1121 along the first direction.

[0069] In this embodiment, the mounting groove 1111 can be located at both ends of the end plate 111 along the second direction, the latch 113 can penetrate the end plate 111 and the hook 1121 of the side plate 112 simultaneously along the third direction, and the latch 113 combined with the end plate 111 can limit the displacement of the hook 1121 of the side plate 112 in the first direction, the second direction and the third direction.

[0070] 3. The latch pin 113 is assembled to the end plate 111 along the second direction and passes through the hook 1121 .

[0071] In this embodiment, the mounting groove 1111 can be located on both sides of the end plate 111 along the first direction, the latch 113 can be assembled on the end plate 111 along the second direction, and the latch 113 penetrates the hook 1121 of the side plate 112 along the second direction, and the latch 113 combined with the end plate 111 can limit the displacement of the hook 1121 of the side plate 112 in the first direction, the second direction and the third direction.

[0072] It should be noted that if Figure 2 and Figure 4 As shown, the first direction is the X direction, that is, the front-to-back direction; the second direction is the Y direction, that is, the left-to-right direction; and the third direction is the Z direction, that is, the up-down direction.

[0073] The frame 11 provided in the embodiment of the present application realizes the assembly between the end plate 111 and the side plate 112 through the arrangement of the above-mentioned hook 1121, the installation groove 1111 and the pin 113. Compared with the traditional welding scheme, it reasonably avoids defects such as blowouts, welding deviation, cold welding and undercutting that may occur in welding, and enhances the bonding force between the end plate 111 and the side plate 112, thereby significantly increasing the yield rate of the battery 10, and further improving the production efficiency of the battery 10, while significantly reducing the equipment investment cost and rework cost in the processing and manufacturing process, thereby greatly saving the production cost of the battery 10.

[0074] According to some embodiments of the present application, Figure 2-Figure 5 As shown, the hook 1121 may be provided with a first limiting groove 1122, and the end plate 111 may be provided with a second limiting groove 1112, and the second limiting groove 1112 may intersect with the installation groove 1111, wherein the first limiting groove 1122 and the second limiting groove 1112 may be open in a third direction, and the opening direction of the installation groove 1111 may intersect with the third direction.

[0075] In this embodiment, if Figure 2-Figure 5As shown, the mounting groove 1111 can be arranged at the end of the end plate 111 along the second direction, and the mounting groove 1111 can be opened toward the second direction, the first limiting groove 1122 and the second limiting groove 1112 can be opened toward the third direction, the hook 1121 can be bent together with the main part of the side plate 112, and during the assembly process of the end plate 111 and the side plate 112, the hook 1121 of the side plate 112 can be inserted into the mounting groove 1111 of the end plate 111 along the second direction. At this time, the first limiting groove 1122 on the hook 1121 crosses and is arranged opposite to the second limiting groove 1112 of the end plate 111, and after the latch 113 is assembled in the second limiting groove 1112 along the third direction, the assembly between the latch 113 and the first limiting groove 1122 is also completed.

[0076] In other embodiments, the mounting groove 1111 can be arranged on the side of the end plate 111 along the first direction, and the mounting groove 1111 can be opened toward the first direction, the first limiting groove 1122 and the second limiting groove 1112 can be opened toward the third direction, and the hook 1121 can be a part of the main part of the side plate 112 extending along the first direction. During the assembly process of the end plate 111 and the side plate 112, the hook 1121 of the side plate 112 can be inserted into the mounting groove 1111 of the end plate 111 along the first direction. At this time, the first limiting groove 1122 on the hook 1121 crosses and is opposite to the second limiting groove 1112 of the end plate 111. After the pin 113 is assembled in the second limiting groove 1112 along the third direction, the assembly between the pin 113 and the first limiting groove 1122 is also completed.

[0077] It should be noted that if Figure 2 and Figure 4 As shown, the first direction is the X direction, that is, the front-to-back direction; the second direction is the Y direction, that is, the left-to-right direction; and the third direction is the Z direction, that is, the up-down direction.

[0078] The frame 11 provided in the embodiment of the present application realizes a limiting connection between the pin 113 and the end plate 111 and the side plate 112 through the setting of the above-mentioned first limiting groove 1122 and the second limiting groove 1112, thereby enhancing the bonding force between the end plate 111 and the side plate 112. Compared with the solution in which the pin 113 passes through the end plate 111 and the hook 1121, the structural strength of the end plate 111 and the side plate 112 is improved, and the reliability of the entire frame 11 is increased, thereby significantly increasing the yield rate of the battery 10, and then improving the production efficiency of the battery 10, while significantly reducing the equipment investment cost and rework cost in the processing and manufacturing process, thereby greatly saving the production cost of the battery 10.

[0079] According to some embodiments of the present application, Figure 2-Figure 5 As shown, the length of the mounting groove 1111 along the third direction may be greater than the length of the hook 1121 along the third direction.

[0080] In this embodiment, if Figure 2-Figure 5 As shown, when the end plate 111 and the hook 1121 are equipped with pins 113 on both sides along the third direction, the third direction is the Z direction, that is, the up and down direction, the top surface height of the installation groove 1111 can be greater than the top surface height of the hook 1121, and the bottom surface height of the installation groove 1111 can be less than the bottom surface height of the hook 1121, that is, a certain space is reserved between the top and bottom of the hook 1121 and the end plate 111, and during the disassembly of the pins 113 on the upper and lower sides, the reserved top space and bottom space can be used to easily find the force points for pulling out the pins 113 on the upper and lower sides, thereby easily pulling the pins 113 on the upper and lower sides out of the first limiting grooves 1122 and the second limiting grooves 1112 on the upper and lower sides.

[0081] In other embodiments, when the end plate 111 and the hook 1121 are only equipped with the pin 113 on the upper side, the top surface height of the installation groove 1111 can be greater than the top surface height of the hook 1121, that is, a certain space is left between the hook 1121 and the top of the end plate 111. During the disassembly of the upper pin 113, the reserved top space can be used to easily find the force point for pulling out the upper pin 113, thereby easily pulling the upper pin 113 out from the first limiting groove 1122 and the second limiting groove 1112 on the upper side.

[0082] In some other embodiments, when the end plate 111 and the hook 1121 are only equipped with the pin 113 on the lower side, the bottom height of the installation groove 1111 can be smaller than the bottom height of the hook 1121, that is, a certain space is left between the hook 1121 and the bottom of the end plate 111. During the disassembly of the lower pin 113, the reserved top space can be used to easily find the force point for pulling out the lower pin 113, thereby easily pulling the lower pin 113 out from the first limiting groove 1122 and the second limiting groove 1112 on the lower side.

[0083] The frame 11 provided in the embodiment of the present application is designed with a length relationship between the above-mentioned installation groove 1111 and the hook 1121, so that after the hook 1121 and the installation groove 1111 are assembled, a certain space can be reserved for removing the latch 113, thereby preventing the latch 113 from being completely hidden in the first limiting groove 1122 and the second limiting groove 1112, making it difficult to find a suitable force point during disassembly, thereby reducing the difficulty of operation during the disassembly process and further improving the maintainability of the entire frame 11.

[0084] According to some embodiments of the present application, Figure 3 As shown, the length H1 of the installation groove 1111 along the third direction and the length H2 of the hook 1121 along the third direction may satisfy: 0mm ​

[0085] Specifically, when the pins 113 are installed on both sides of the end plate 111 and the hook 1121 along the third direction, H1-H2 can be 0.5mm, 3.75mm, 10mm, 15.225mm, 20mm or other values ​​between 0mm and 20mm, which are not limited here.

[0086] When the end plate 111 and the hook 1121 are only equipped with the latch 113 on the upper side or the lower side, the length H1 of the mounting groove 1111 along the third direction and the length H2 of the hook 1121 along the third direction can satisfy: 0 mm

[0087] Specifically, when the end plate 111 and the hook 1121 are only equipped with the pin 113 on the upper side or only on the lower side, H1-H2 can be 0.15mm, 3.5mm, 5mm, 7.325mm, 10mm or other values ​​between 0mm and 10mm, which are not limited here.

[0088] It should be noted that, under this limitation, the height of the latch pin 113 along the third direction should not be too large, so as not to affect the structural strength of the hook 1121 itself.

[0089] The frame 11 provided in the embodiment of the present application prevents H1-H2 from being too large, which would cause the strength of the hook 1121 to be obviously insufficient, through the above-mentioned range limitation of H1-H2, thereby increasing the assembly area between the hook 1121 and the installation groove 1111 as much as possible, thereby improving the reliability and stability of the assembly of the end plate 111 and the side plate 112; and prevents H1-H2 from being too small, which would cause the reserved space to be insufficient for operation, thereby reducing the difficulty of operation during the disassembly process, thereby improving the maintainability of the entire frame 11.

[0090] According to some embodiments of the present application, Figure 2-Figure 7 As shown, the hook 1121 may be provided with first limiting grooves 1122 on both sides along the third direction, and the end plate 111 may be provided with second limiting grooves 1112 on both sides along the third direction.

[0091] In this embodiment, if Figure 2-Figure 7 As shown, during the assembly process of the end plate 111 and the side plate 112, the hook 1121 of the side plate 112 can be inserted into the installation groove 1111 of the end plate 111 along the second direction. At this time, the first limiting grooves 1122 on both sides of the hook 1121 along the third direction are respectively crossed and arranged opposite to the second limiting grooves 1112 on both sides of the end plate 111 along the third direction. After the two pins 113 are respectively assembled in the second limiting grooves 1112 on both sides along the third direction, the two pins 113 and the first limiting grooves 1122 on both sides along the third direction are also assembled.

[0092] ​The frame 11 provided in the embodiment of the present application has a structural design in which both sides of the end plate 111 and the hook 1121 along the third direction are equipped with pins 113. Compared with the solution with a single-sided pin 113, the double locking along the third direction is used to further limit the relative displacement of the hook 1121 and the mounting groove 1111, thereby further enhancing the bonding force between the end plate 111 and the side plate 112, thereby improving the yield rate of the battery 10.

[0093] According to some embodiments of the present application, Figure 6 As shown, the second limiting groove 1112 can penetrate the end plate 111 along the third direction.

[0094] In actual implementation, Figure 6 As shown, instead of the second limiting grooves 1112 on both sides being separated and arranged, the second limiting grooves 1112 on both sides can be directly opened up to become a second limiting groove 1112 which is open both at the top and the bottom. During the processing of the end plate 111, there is no need to independently process the two sides of the end plate 111. The end plate 111 can be directly pierced through as a whole along the third direction and finally extruded into shape.

[0095] The frame 11 provided in the embodiment of the present application is designed such that the second limiting groove 1112 passes through the end plate 111 along the third direction, so that the end plate 111 can be directly pierced through and extruded into shape as a whole when processing the second limiting groove 1112, which significantly increases the convenience of processing the second limiting groove 1112, thereby accelerating the production rate of the battery 10, which is conducive to promotion and mass production.

[0096] According to some embodiments of the present application, Figure 2-Figure 3 As shown, the latch pin 113 may not protrude from the second limiting groove 1112 along the third direction.

[0097] In actual implementation, Figure 2-Figure 3 As shown, the latch 113 located on the upper side of the end plate 111 may not protrude upward from the second limiting groove 1112 located on the upper side of the end plate 111, and the latch 113 located on the lower side of the end plate 111 may not protrude downward from the second limiting groove 1112 located on the lower side of the end plate 111. In the size design of the latch 113, the height of the latch 113 along the third direction may be designed to be smaller. Due to the existence of assembly errors, after the latch 113 is matched with the second limiting groove 1112, the top surface of the latch 113 may be flush with the notch of the second limiting groove 1112, or the top surface of the latch 113 may be lower than the notch of the second limiting groove 1112.

[0098] The frame 11 provided in the embodiment of the present application realizes that the latch 113 is entirely located in the second limiting groove 1112 without protruding out of the second limiting groove 1112 through the above-mentioned size design of the latch 113. The height of the latch 113 along the third direction is designed to be smaller in the pre-size design, which can leave a margin for the assembly error between the latch 113 and the second limiting groove 1112, thereby facilitating the assembly and disassembly of the latch 113.

[0099] According to some embodiments of the present application, Figure 2-Figure 6 As shown, the mounting groove 1111 and the second limiting groove 1112 can be perpendicular.

[0100] In this embodiment, if Figure 2-Figure 6 As shown, the installation groove 1111 can extend along the second direction, the second limiting groove 1112 can extend along the first direction, and the second direction can be perpendicular to the first direction. Specifically, after the end plate 111 and the side plate 112 are assembled, the pin 113 can be perpendicular to the hook 1121 located in the installation groove 1111, wherein the first direction is the X direction and the second direction is the Y direction.

[0101] In other embodiments, the mounting groove 1111 may extend along a first direction, and the second limiting groove 1112 may extend along a second direction, the second direction may be perpendicular to the first direction, the first direction is an X direction, and the second direction is a Y direction.

[0102] The frame 11 provided in the embodiment of the present application realizes that the pin 113 is perpendicular to the hook 1121 after assembly through the structural design that the above-mentioned installation groove 1111 is perpendicular to the second limiting groove 1112, so that the maximum supporting surface of the pin 113 is perpendicular to the insertion direction of the hook 1121, and the limiting force of the pin 113 on the hook 1121 to separate from the installation groove 1111 along the first direction or the second direction is optimized to the maximum extent, and the bonding force between the end plate 111 and the side plate 112 is enhanced as much as possible, thereby further increasing the yield rate of the battery 10.

[0103] According to some embodiments of the present application, Figure 2-Figure 5 As shown, the latch pin 113 may be interference fit with the first limiting groove 1122 and the second limiting groove 1112 , and the hook 1121 may be interference fit with the installation groove 1111 .

[0104] In this embodiment, if Figure 2-Figure 5As shown, the size of the latch 113 can be slightly larger than the size of the first limiting groove 1122 and the second limiting groove 1112, and the size of the hook 1121 can be slightly larger than the size of the installation groove 1111. Based on the fact that the latch 113 and the hook 1121 have a certain elasticity, the latch 113 can be assembled in the first limiting groove 1122 and the second limiting groove 1112 in a compressed state, that is, the latch 113 can stop against the groove wall of the first limiting groove 1122 and the second limiting groove 1112. Specifically, The friction between the latch pin 113 and the first limiting groove 1122 and the groove wall of the second limiting groove 1112 can prevent the hook 1121 from detaching from the mounting groove 1111 along the third direction. The hook 1121 can be assembled in the mounting groove 1111 in a compressed state, that is, the hook 1121 can stop against the groove wall of the mounting groove 1111. Specifically, the friction between the hook 1121 and the mounting groove 1111 can prevent the hook 1121 from detaching from the mounting groove 1111 along the second direction to a certain extent.

[0105] In other embodiments, the latch pin 113 may be interference fit with the first limiting groove 1122 and the second limiting groove 1112 , and the hook 1121 may be transition fit with the installation groove 1111 .

[0106] In some other embodiments, the latch pin 113 may be transitionally matched with the first limiting groove 1122 and the second limiting groove 1112 , and the hook 1121 may be transitionally matched with the installation groove 1111 .

[0107] In some other embodiments, the latch pin 113 may be transitionally fitted with the first limiting groove 1122 and the second limiting groove 1112 , and the hook 1121 may be interference fit with the installation groove 1111 .

[0108] The frame 11 provided in the embodiment of the present application, through the structural design of the interference assembly of the above-mentioned pin 113 and the hook 1121, makes the connection between the pin 113, the hook 1121 and the end plate 111 sufficiently tight, reduces the probability of loosening of the pin 113 and the hook 1121, improves the reliability and stability of the overall structure, thereby improving the assembly quality of the entire frame 11, and further extending the service life of the entire frame 11.

[0109] According to some embodiments of the present application, Figure 5-Figure 6 As shown, a first guide portion 1113 may be provided on the wall surface close to the inner side of the slot opening of the installation slot 1111 , and the surface of the first guide portion 1113 may be a curved surface.

[0110] In actual implementation, Figure 2-Figure 5As shown, the mounting groove 1111 can be arranged at the end of the end plate 111 along the second direction, and the mounting groove 1111 can be opened toward the second direction, the first limiting groove 1122 and the second limiting groove 1112 can be opened toward the third direction, and the hook 1121 can be bent at 90° with the main part of the side plate 112. Specifically, the hook 1121 can include a hook body section and a transition section, the hook body section can cooperate with the mounting groove 1111, and the transition section can be connected between the hook body section and the main part of the side plate 112. In order to facilitate assembly, the shape of the transition section can be designed to be an arc shape, and the surface of the first guide portion 1113 can cooperate with the transition section.

[0111] The frame 11 provided in the embodiment of the present application realizes the cooperation between the transition section of the hook 1121 and the first guide portion 1113 through the setting of the above-mentioned first guide portion 1113 and the design of the rounded structure, thereby preventing the hook 1121 from being stuck by the notch of the installation groove 1111 close to the inner wall, facilitating the assembly and disassembly of the hook 1121, and at the same time increasing the smoothness of the assembly of the end plate 111 and the side plate 112, thereby accelerating the assembly speed and facilitating promotion and mass production.

[0112] According to some embodiments of the present application, Figure 5-Figure 6 As shown, a second guide portion 1114 may be provided on the wall surface close to the outer side of the slot opening of the installation slot 1111 . The surface of the second guide portion 1114 may be a plane, and the second guide portion 1114 may be bent relative to the outer wall surface of the adjacent end plate 111 .

[0113] The angle of the second guide portion 1114 may be 30°, 45°, or other values. For example, in some embodiments, the angle of the second guide portion 1114 may be 30°.

[0114] When a second guide portion 1114 is provided on the wall surface near the outer side of the slot of the installation slot 1111, combined with the design of the angle structure, it can serve as a guide for the assembly of the hook 1121 and the installation slot 1111, thereby facilitating the installation and disassembly between the hook 1121 and the installation slot 1111, and at the same time removing the burrs on the slot of the installation slot 1111 caused by machining, thereby increasing the flatness of the outer surface of the end plate 111.

[0115] According to some embodiments of the present application, Figure 5 and Figure 8 As shown, a third guide portion 1131 may be provided on one side of the latch pin 113 close to the hook 1121 along the third direction. The surface of the third guide portion 1131 may be a plane, and the third guide portion 1131 may be bent relative to the outer wall surface of the adjacent latch pin 113 .

[0116] The angle of the third guide portion 1131 may be 30°, 45°, or other values. For example, in some embodiments, the angle of the third guide portion 1131 may be 30°.

[0117] like Figure 5 and Figure 8 As shown, during the assembly of the latch 113 with the first limiting groove 1122 and the second limiting groove 1112 , the side of the latch 113 provided with the third guide portion 1131 can face the first limiting groove 1122 and the second limiting groove 1112 .

[0118] The latch 113 may be provided with one or more third guide portions 1131, wherein a plurality of third guide portions 1131 may be provided with two or more third guide portions 1131. For example, in some embodiments, Figure 5 and Figure 8 As shown, the latch 113 may be provided with two third guide portions 1131 .

[0119] The frame 11 provided in the embodiment of the present application prevents the pin 113 from getting stuck with the first limiting groove 1122 and the second limiting groove 1112 through the setting of the above-mentioned third guide portion 1131, which can facilitate the installation and disassembly of the pin 113 and the end plate 111, and at the same time remove the burrs on the pin 113 caused by machining, thereby increasing the flatness of the outer surface of the pin 113.

[0120] According to some embodiments of the present application, the present application further provides a battery 10 , which includes a plurality of battery cells 10 and a surrounding frame 11 of any of the above solutions, wherein the plurality of battery cells 10 are stacked and arranged in the surrounding frame 11 .

[0121] Specifically, the stacking direction of the plurality of battery cells 10 may be consistent with the arrangement direction of the two end plates 111 , that is, the plurality of battery cells 10 are stacked along the first direction.

[0122] According to some embodiments of the present application, the present application further provides an electrical device, comprising the battery 10 of any of the above schemes, and the battery 10 is used to provide electrical energy to the electrical device.

[0123] The electrical device may be any of the aforementioned devices or systems using the battery 10 .

[0124] According to some embodiments of the present application, see Figure 2-Figure 8As shown, the present application provides a frame 11, which is applied to a battery 10, and the frame 11 includes: a latch 113 and two end plates 111 and two side plates 112 arranged separately. The two end plates 111 are arranged opposite to each other along a first direction, and the two side plates 112 are arranged opposite to each other along a second direction. The side plates 112 are provided with hooks 1121, and the end plates 111 are provided with mounting grooves 1111, and the hooks 1121 cooperate with the mounting grooves 1111; the latch 113 is used to limit the hooks 1121 from being separated from the mounting grooves 1111. The hooks 1121 are provided with first limiting grooves 1122, and the end plates 111 are provided with second limiting grooves 1112, and the second limiting grooves 1112 intersect with the mounting grooves 1111, wherein the first limiting grooves 1122 and the second limiting grooves 1112 are open toward a third direction, and the opening direction of the mounting grooves 1111 intersects with the third direction. The length of the installation groove 1111 along the third direction is greater than the length of the hook 1121 along the third direction, the hook 1121 is provided with a first limiting groove 1122 on both sides along the third direction, the end plate 111 is provided with a second limiting groove 1112 on both sides along the third direction, and further, the second limiting groove 1112 passes through the end plate 111 along the third direction. The latch 113 does not protrude from the second limiting groove 1112 along the third direction, the installation groove 1111 is perpendicular to the second limiting groove 1112, the latch 113 is interference fit with the first limiting groove 1122 and the second limiting groove 1112, and the hook 1121 is interference fit with the installation groove 1111. A first guide portion 1113 is provided on the inner wall surface of the slot opening of the installation slot 1111, and the surface of the first guide portion 1113 is an arc surface; a second guide portion 1114 is provided on the outer wall surface of the slot opening of the installation slot 1111, and the surface of the second guide portion 1114 is a plane, and is bent relative to the outer wall surface of the adjacent end plate 111; a third guide portion 1131 is provided on the side of the latch pin 113 close to the hook 1121 along the third direction, and the surface of the third guide portion 1131 is a plane, and is bent relative to the outer wall surface of the adjacent latch pin 113.

[0125] The length H1 of the installation groove 1111 along the third direction and the length H2 of the hook 1121 along the third direction satisfy: 0mm

[0126] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0127] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.​

Claims

1. A frame, applied to a battery, characterized in that: include: Two end plates and two side plates are arranged separately, the two end plates are arranged opposite to each other along a first direction, the two side plates are arranged opposite to each other along a second direction, the side plates are provided with hooks, the end plates are provided with mounting grooves, the hooks cooperate with the mounting grooves; A latch is used to limit the hook from being separated from the installation slot.

2. The frame according to claim 1, characterized in that: The hook is provided with a first limiting groove, and the end plate is provided with a second limiting groove, the second limiting groove intersects with the installation groove, wherein the first limiting groove and the second limiting groove are open to a third direction, and the opening direction of the installation groove intersects with the third direction.

3. The frame according to claim 2, characterized in that: The length of the mounting groove along the third direction is greater than the length of the hook along the third direction.

4. The surrounding frame according to claim 3, characterized in that: The length H1 of the mounting groove along the third direction and the length H2 of the hook along the third direction satisfy: 0 mm <H1-H2≤20mm。 5. The surrounding frame according to claim 2, characterized in that: The first limiting grooves are provided on both sides of the hook along the third direction, and the second limiting grooves are provided on both sides of the end plate along the third direction.

6. The surrounding frame according to claim 5, characterized in that: The second limiting groove passes through the end plate along the third direction.

7. The surrounding frame according to claim 2, characterized in that: The latch does not protrude from the second limiting groove along the third direction.

8. The surrounding frame according to claim 2, characterized in that: The mounting groove is perpendicular to the second limiting groove.

9. The surrounding frame according to claim 2, characterized in that: The latch pin is interference fit with the first limiting groove and the second limiting groove, and the hook is interference fit with the installation groove.

10. The enclosure according to any one of claims 1 to 9, characterized in that: A first guide portion is provided on the wall surface close to the inner side of the notch of the installation slot, and the surface of the first guide portion is an arc surface.

11. The enclosure according to any one of claims 1 to 9, characterized in that: A second guide portion is provided on the wall surface close to the outer side of the notch of the installation slot. The surface of the second guide portion is a plane and is bent relative to the outer wall surface of the adjacent end plate.

12. The enclosure according to any one of claims 1 to 9, characterized in that: A third guide portion is provided on one side of the latch pin close to the hook along the third direction. The surface of the third guide portion is a plane and is bent relative to the outer wall surface of the adjacent latch pin.

13. A battery, characterized in that: include: The frame as claimed in any one of claims 1 to 12; A plurality of battery cells are stacked and arranged in the surrounding frame.

14. An electrical device, characterized in that: include: The battery as claimed in claim 13.

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