CN220710527U

CN220710527U - Battery and electric equipment

Info

Publication number: CN220710527U
Application number: CN202420134246.7U
Authority: CN
Inventors: 康全; 高宇
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2024-01-19
Filing date: 2024-01-19
Publication date: 2024-04-02
Anticipated expiration: 2034-01-19

Abstract

The application discloses battery and consumer, battery include box and a plurality of module, and a plurality of modules are held in the box, and a plurality of modules are arranged along the first direction. Each module comprises a pair of side plates and a plurality of battery cells, wherein the side plates are arranged at intervals along the first direction, and the battery cells are arranged between the side plates. The plurality of modules include adjacent first modules and second modules, along a first direction, the first modules include a first side panel proximate to the second modules, and the second modules include a second side panel proximate to the first modules. Wherein, one side that first curb plate faced the second curb plate is provided with first convex part, and one side that the second curb plate faced the first curb plate is provided with the second convex part, and the battery still includes first locking piece, and first locking piece is configured to connect first convex part and second convex part in the box. The first locking member is shared by the first protruding part and the second protruding part, so that the number of parts can be simplified, and the energy density of the battery can be improved.

Description

Battery and electric equipment

Technical Field

The application relates to the technical field of batteries, in particular to a battery and electric equipment.

Background

Along with the development of new energy technology, the application of the battery is more and more extensive, the battery has higher energy density, higher safety, long service life and environmental protection to the social environment, and the battery has been widely applied to the aspects of passenger cars, commercial vehicles, electric bicycles, heavy trucks, energy storage facilities, power stations, engineering manufacture, intelligent appliances and the like, and simultaneously promotes the technical development and research of communication terminals, medical appliances, energy development and the like.

In battery technology, how to increase the energy density of a battery is a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a battery and electric equipment, which can effectively improve the energy density of the battery.

In a first aspect, an embodiment of the present application provides a battery, including a case and a plurality of modules, where the plurality of modules are accommodated in the case, and the plurality of modules are arranged along a first direction, each module includes a pair of side plates and a plurality of battery cells, the pair of side plates are arranged at intervals along the first direction, and the plurality of battery cells are disposed between the pair of side plates;

the plurality of modules comprises a first module and a second module which are adjacent, wherein the first module comprises a first side plate close to the second module along the first direction, and the second module comprises a second side plate close to the first module;

wherein, first curb plate face one side of second curb plate is provided with first convex part, second curb plate face one side of first curb plate is provided with the second convex part, the battery still includes first locking piece, first locking piece is configured to with first convex part and second convex part is connected to the box.

In the above technical scheme, in two adjacent modules, first module is including being close to the first curb plate of second module, and the second module is including being close to the second curb plate of first module, and first curb plate is provided with first convex part, and the second curb plate is provided with the second convex part, and first locking piece is configured to be connected first convex part and second convex part in the box, so, first locking piece together is connected first convex part and second convex part in the box. Compared with the mode that the first convex part and the second convex part are connected with the box body through locking pieces respectively, the first convex part and the second convex part are connected with the box body through the first locking pieces together, so that the first convex part and the second convex part share the first locking pieces, the number of the locking pieces required for installing the module in the box body is simplified, the occupation ratio of the battery monomers in unit mass is improved, and the energy density of the battery is improved.

In some embodiments, each of the modules further includes a pair of end plates spaced apart along the second direction, the plurality of battery cells being disposed between the pair of end plates; and the projection of the first convex part and the projection of the second convex part are at least partially overlapped along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

In the above technical scheme, along the third direction, the projection of the first protruding portion and the projection of the second protruding portion at least partially overlap, that is, the first protruding portion and the second protruding portion are stacked with one another in the third direction, so that the size occupation of the whole first protruding portion and the whole second protruding portion in the first direction and the second direction can be reduced, the size of the battery in the first direction and the second direction is reduced, the single-body ratio of the battery in the unit volume is improved, and the energy density of the battery is further improved.

In some embodiments, the first protrusion includes a first body and a first stop, and the second protrusion includes a second body and a second stop, the first body and the second body being disposed opposite one another along the third direction;

the first limiting part is arranged on one side of the first body facing the second body, the second limiting part is arranged on one side of the second body facing the first body, the first limiting part is abutted to the second body along the third direction, the second limiting part is abutted to the first body along the third direction, and the first limiting part and the second limiting part are abutted to each other along the second direction.

Among the above-mentioned technical scheme, first convex part includes first body and first spacing portion, and the second convex part includes second body and second spacing portion, and first spacing portion butt in the second body along the third direction, and second spacing portion butt in first body along the third direction, so, first convex part and second convex part can support and spacing another in the mutual butt of third direction, and one in first convex part and the second convex part can support and spacing another, and one in restriction first module and the second module is along the third direction drunkenness to can improve the stability of module. The first limiting part and the second limiting part are mutually abutted along the second direction, and the displacement amplitude of the first module and the second module along the second direction can be limited under the action of the first limiting part and the second limiting part, so that the stability of the module is improved.

In some embodiments, the first protrusion is provided with a first through hole penetrating the first body and a second through hole penetrating the first body and the first stopper;

the second convex part is provided with a third through hole corresponding to the first through hole and a fourth through hole corresponding to the second through hole, the third through hole penetrates through the second body and the second limiting part, and the fourth through hole penetrates through the second body;

The first locking pieces are provided in two, one configured to pass through the first through hole and the third through hole to be connected with the case, and the other configured to pass through the second through hole and the fourth through hole to be connected with the case.

In the above technical scheme, two first locking pieces can reduce the risk that first convex part and second convex part and box are connected inefficacy, improve the joint strength of first convex part, second convex part and box, improve the stability of module, improve the structural strength of battery.

In some embodiments, a third protrusion is further provided on a side of the first side plate facing the second side plate, a fourth protrusion is provided on a side of the second side plate facing the first side plate, and the battery further includes a second locking member configured to connect the third protrusion and the fourth protrusion to the case.

In the above technical scheme, the first side board still is provided with the third convex part towards one side of second curb plate, and one side that the second curb plate faced first curb plate is provided with the fourth convex part, and the second locking piece is configured to be connected in the box with third convex part and fourth convex part, so, the hookup location of first module and box increases, and the hookup location of second module and box increases, can further improve the connection stability of module and box, improves the structural strength of battery.

In some embodiments, the third protrusion includes a first portion and a second portion disposed opposite in the third direction, the first portion and the second portion forming a gap therebetween that accommodates at least a portion of the fourth protrusion;

the third protrusion is provided with a fifth through hole penetrating the first portion and the second portion, the fourth protrusion is provided with a sixth through hole corresponding to the fifth through hole, and the second locking member is configured to pass through the fifth through hole and the sixth through hole to be connected with the case.

In the above technical scheme, the third convex part comprises a first part and a second part which are oppositely arranged along the third direction, a gap for accommodating at least part of the fourth convex part is formed between the first part and the second part, and at least part of the fourth convex part is accommodated in the gap, so that the structural strength of the first convex part can be improved, and the deformation risk of the first convex part is reduced. The second locking piece is configured to pass through the fifth through hole and the sixth through hole to be connected with the box, can realize the connection of third convex part, fourth convex part and box, can further improve the stability of module.

In some embodiments, each of the modules further includes a pair of end plates spaced apart along a second direction, the plurality of battery cells being disposed between the pair of end plates, the second direction being perpendicular to the first direction;

The two first convex parts are arranged at intervals along the second direction;

the third convex parts are arranged in a plurality, the third convex parts are arranged along the second direction, and the third convex parts are arranged between the two first convex parts.

According to the technical scheme, the plurality of third convex parts are arranged, and under the condition that one of the third convex parts is in failure in connection with the box body, other third convex parts can still be stably connected with the box body, so that the stability of the module can be further improved. The plurality of third convex parts are arranged between the two first convex parts, so that the requirement on the structural strength of the third convex parts can be reduced, and meanwhile, the consistency of the first side plate interface is improved.

In some embodiments, the first module further comprises a third side plate remote from the second module, the second module further comprising a fourth side plate remote from the first module;

the third side plate and the second side plate have the same structure;

the fourth side plate has the same structure as the first side plate.

Among the above-mentioned technical scheme, the third curb plate is the same with the structure of second curb plate, and the fourth curb plate is the same with the structure of first curb plate, so, the required curb plate of module is less, is favorable to realizing the standardization batch production of curb plate, reduces the quantity of the required mould model of production curb plate, improves production efficiency, reduction in production cost.

In some embodiments, the housing includes a bottom wall for supporting a plurality of the modules and a mounting beam mounted to the bottom wall, the first locking member being connected to the mounting beam, and the second locking member being connected to the mounting beam.

Among the above-mentioned technical scheme, the installation roof beam can improve the structural strength of box, and the installation roof beam can improve the structural strength of this junction with first locking piece connection, and the installation roof beam can improve the structural strength of this junction with the second locking piece connection, improves the stability of module, improves the structural strength of battery.

In a second aspect, an embodiment of the present application provides an electric device, where the electric device includes the battery provided by any one of the embodiments, and the battery is used to supply power to the electric device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

FIG. 2 is an exploded schematic view of a battery according to some embodiments of the present application;

FIG. 3 is an exploded schematic view of a battery according to some embodiments of the present application;

FIG. 4 is a schematic view of the battery of FIG. 2 from another perspective;

FIG. 5 is a schematic diagram of a module according to some embodiments of the present application;

FIG. 6 is a schematic view of a first side plate according to some embodiments of the present application;

FIG. 7 is a schematic structural view of a second side plate according to some embodiments of the present application;

FIG. 8 is a schematic diagram illustrating an assembly of a first protrusion and a second protrusion according to some embodiments of the present application;

FIG. 9 is an exploded view of FIG. 8;

FIG. 10 is a schematic view illustrating an assembly of a third protrusion and a fourth protrusion according to some embodiments of the present disclosure;

fig. 11 is an exploded view of fig. 10.

Icon: 1000-vehicle; 200-motor; 300-a controller; 100-cell; 10-module; 10 a-end plates; 10 b-side panels; 10 c-battery cell; 11-a first module; 111-a first side plate; 1111-a first protrusion; 11111-a first body; 11112—a first stop; 11113-a first via; 11114-a second through hole; 1112-a third protrusion; 11121-first part; 11122-second part; 11123-gap; 11124-fifth through hole; 112-a third side panel; 12-a second module; 121-a second side plate; 1211-a second protrusion; 12111-a second body; 12112-a second stop; 12113-a third via; 12114-fourth through holes; 1212-fourth protrusions; 12121-sixth through hole; 122-a fourth side panel; 20-a box body; 21-a bottom wall; 22-side walls; 23-mounting a beam; 30-a first locking member; 40-a second locking member; x-a first direction; y-a second direction; z-third direction.

The figures are not drawn to scale.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

The term "or" in this application is merely an association relation describing an association object, and indicates that two relations may exist, for example, a or B may indicate: there are two cases, a alone and B alone.

In the embodiments of the present application, the same reference numerals denote the same components, and in the interest of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the present application, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are illustrative only and should not be construed as limiting the present application in any way.

The term "plurality" as used herein refers to more than two (including two).

In the present application, the battery cell may include, but is not limited to, a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like. The battery cells include, but are not limited to, cylinders, flat bodies, rectangular solids, or other shapes, etc. The battery cells generally comprise cylindrical battery cells, square battery cells, soft package battery cells and the like in a packaging mode.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly consists of a positive plate, a negative plate and a separation membrane. The battery cell mainly relies on metal ions moving between the positive and negative electrode plates, with metal ions (e.g., lithium ions) being inserted and extracted back and forth between the positive and negative electrodes. The isolating film is arranged between the positive electrode and the negative electrode, can play a role in preventing the short circuit of the positive electrode plate and the negative electrode plate, and can enable active ions to pass through.

The positive plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer is used as a positive electrode lug.

Taking a lithium ion battery as an example, the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The positive current collector may be a metal foil or a composite current collector. For example, as the metal foil, surface-silver-treated aluminum, surface-silver-treated stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, titanium, or the like can be used. The composite current collector may include a polymeric material base layer and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel alloy, titanium alloy, silver alloy, etc.) on a polymer material substrate (e.g., a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab.

The negative electrode current collector can be a metal foil or a composite current collector. For example, as the metal foil, surface-silver-treated aluminum, surface-silver-treated stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, titanium, or the like can be used. The negative electrode active material may be carbon, silicon, or the like.

In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together. The material of the separator may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may be a roll-to-roll structure or a laminate structure.

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, or the like. The battery generally includes a case for enclosing one or more battery cells. The case can reduce the influence of liquid or other foreign matters on the charge or discharge of the battery cells.

In some embodiments, the battery may be a battery module, and when there are a plurality of battery cells, the plurality of battery cells are arranged and fixed to form one battery module.

In some embodiments, the battery may be a battery pack including a case and a battery module received in the case.

In some embodiments, a plurality of battery cells (cells) may be first integrated into at least one battery module (module), and then the battery module is mounted in a case to form a battery pack (pack) shape. In this embodiment, auxiliary structural members such as mounting beams may be further provided between the battery modules to improve the mounting stability of the battery modules in the case.

In some embodiments, the tank may be part of the chassis structure of the vehicle. For example, a portion of the tank may become at least a portion of the floor of the vehicle, or a portion of the tank may become at least a portion of the cross member and the side member of the vehicle.

In some embodiments, the battery may be an energy storage device. The energy storage device comprises an energy storage container, an energy storage electric cabinet and the like.

The development of battery technology is taking into consideration various design factors such as reliability, cycle life, discharge capacity, charge-discharge rate and other performance parameters, and the energy density of the battery.

In the battery technology, the module needs to be connected with the box body, so that the module is stabilized, and the movement or displacement of the module during the use of the battery is relieved. Specifically, among the adjacent first module and second module, the first module needs to be connected with the box through the locking piece, and the first module also needs to be connected with the box through the locking piece. In the related art, the first module is connected with the box through some locking pieces, and the second module is connected with the box through other locking pieces, and this is more to the quantity demand of locking piece, leads to the quality increase of battery, and the free duty ratio of battery reduces in the battery volume, and the energy density of battery reduces.

In view of this, in order to solve the problem that the module installation needs locking piece quantity to lead to battery energy density low more, this application embodiment provides a battery, and this battery includes adjacent first module and second module, and first module and second module sharing locking piece are in order to be connected with the box, so, can reduce the quantity demand to the locking piece, reduce part quantity, improve the free duty ratio of battery in the monomer volume, improve the energy density of battery.

The technical scheme disclosed by the embodiment of the application is applicable to, but not limited to, batteries and electric equipment using the batteries.

The electric equipment can be vehicles, mobile phones, portable equipment, notebook computers, ships, spacecrafts, electric toys, electric tools and the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others.

For convenience of description, the following embodiments take the electric device as the vehicle 1000 as an example.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application, a battery 100 is disposed in the vehicle 1000, and the battery 100 may be disposed at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000.

The vehicle 1000 may also include a controller 300 and a motor 200, the controller 300 being configured to control the battery 100 to power the motor 200, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present application, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

In some embodiments, referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present application, the battery 100 includes a case 20 and a plurality of modules 10, and each module 10 includes a plurality of battery cells 10c. The plurality of battery cells 10c may be connected in series, parallel or series-parallel. The series-parallel connection refers to that the plurality of battery cells 10c are connected in series or in parallel.

In some embodiments, the battery 100 may further include a bus bar (not shown), through which electrical connection between the plurality of battery cells 10c may be achieved, so as to achieve serial or parallel connection or series-parallel connection of the plurality of battery cells 10 c.

The bus member may be a metal conductor such as copper, iron, aluminum, steel, aluminum alloy, or the like.

The case 20 is for accommodating a plurality of modules 10.

In some embodiments, the case 20 may include a first portion 11121 (lower case) and a second portion 11122 (upper case), and the first portion 11121 and the second portion 11122 are overlapped with each other to define a receiving space for receiving the battery cell 10 c. The first portion 11121 may be a hollow structure with one side open, and the second portion 11122 may be a hollow structure with one side open, where the open side of the second portion 11122 is closed to the open side of the first portion 11121, so as to form the case 20 with an accommodating space. Of course, the first portion 11121 may be a hollow structure with one side opened, the second portion 11122 may be a plate-like structure, and the second portion 11122 may be covered on the open side of the first portion 11121 to form the case 20 having the accommodating space. Of course, the connection between the first portion 11121 and the second portion 11122 may be sealed by a sealing element (not shown), which may be a sealing ring, sealant, or the like.

In other embodiments, as shown in fig. 2, the second portion 11122 (upper housing) may be omitted, and the housing 20 may include only the first portion 11121 (lower housing), i.e., the housing 20 is in an open structure.

The case 20 may have various shapes, such as a rectangular parallelepiped, a cylinder, etc.

In some embodiments, the battery cells 10c may be arranged in the second direction Y to form a group. Each module 10 may include one set of battery cells 10c or multiple sets of battery cells 10c. Illustratively, as shown in fig. 2, each module 10 includes a set of battery cells 10c.

Referring to fig. 3, fig. 3 is an exploded schematic view of a battery 100 according to some embodiments of the present application. In some embodiments, battery 100 further includes mounting beams 23, and module 10 is mounted to mounting beams 23 to improve stability of module 10.

The embodiment of the present application provides a battery 100, which can improve the problem that the battery 100 has low energy density due to the number of locking members required for connecting a module 10 and a case 20, and the specific structure of the battery 100 is described in detail with reference to the accompanying drawings.

Fig. 4 is a schematic view of the battery 100 of fig. 2 from another view; FIG. 5 is a schematic diagram of a module 10 according to some embodiments of the present application; fig. 6 is a schematic structural view of a first side plate 111 according to some embodiments of the present application; fig. 7 is a schematic structural diagram of a second side plate 121 according to some embodiments of the present application; fig. 8 is an assembly schematic of first boss 1111 and second boss 1211 according to some embodiments of the present application;

The application provides a battery 100, referring to fig. 2 to 4, the battery 100 includes a case 20 and a plurality of modules 10, the plurality of modules 10 are accommodated in the case 20, and the plurality of modules 10 are arranged along a first direction X. Referring to fig. 5, each module 10 includes a pair of side plates 10b and a plurality of battery cells 10c, the pair of side plates 10b being arranged at intervals in the first direction X, the plurality of battery cells 10c being disposed between the pair of side plates 10 b.

Referring to fig. 3, the plurality of modules 10 includes adjacent first and second modules 11 and 12, the first module 11 including a first side plate 111 adjacent to the second module 12 along the first direction X, and the second module 12 including a second side plate 121 adjacent to the first module 11. Referring to fig. 6, 7 and 8, in which a side of the first side plate 111 facing the second side plate 121 is provided with a first protrusion 1111, a side of the second side plate 121 facing the first side plate 111 is provided with a second protrusion 1211, and the battery 100 further includes a first locking member 30, the first locking member 30 being configured to connect the first protrusion 1111 and the second protrusion 1211 to the case 20.

The number of modules 10 may be specifically set as desired, and it is understood that the battery 100 may include any number of modules 10, two or more, depending on the energy requirements of the battery 100.

The first module 11 and the second module 12 are any two adjacent modules 10 among the plurality of modules 10, and the structures of the first module 11 and the second module 12 may be the same or different. Illustratively, in fig. 3, the battery 100 includes three modules 10, and if the leftmost module 10 is defined as the first module 11, the middle module 10 is defined as the second module 12, and if the middle module 10 is defined as the first module 11, the leftmost module 10 or the rightmost module 10 may be defined as the second module 12. For convenience of description, the left-hand module 10 is defined herein as a first module 11, and the middle module 10 is defined as a second module 12.

The first side plate 111 and the second side plate 121 are two side plates 10b of the first module 11 and the second module 12 facing each other, and it is understood that the first side plate 111 and the second side plate 121 are two side plates 10b of two adjacent modules 10 that are close to each other.

The first side plate 111 is provided with a first protrusion 1111 on a side facing the second side plate 121, the first protrusion 1111 is a connection structure of the first module 11 for connection with the case 20, the second side plate 121 is provided with a second protrusion 1211 on a side facing the first side plate 111, and the second protrusion 1211 is a connection structure of the second module 12 for connection with the case 20.

The shape of the first protrusion 1111 may be variously, and illustratively, in fig. 6, the first protrusion 1111 is an ear plate. The shape of the second protrusion 1211 may also be various, and the second protrusion 1211 is an ear plate in fig. 7 by way of example.

The first locking member 30 is a kind of fastener, and the first locking member 30 is configured to connect the first boss 1111 and the second boss 1211 to the case 20, meaning that the first boss 1111 and the second boss 1211 share the first locking member 30, that is, the first locking member 30 connects the first boss 1111 and the second boss 1211 to the case 20 at the same time.

The first locking member 30 may be any fastener capable of connecting the first boss 1111 and the second boss 1211 to the case 20. The structure of the first locking member 30 includes, but is not limited to, a bolt, a clasp, a screw, a threaded pin, etc. Illustratively, the first locking member 30 is a threaded cylindrical pin, and the first locking member 30 is threadably coupled to the housing 20. Of course, in other embodiments, the first locking member 30 may be a bolt that may penetrate the first boss 1111 and the second boss 1211 from a side facing away from the case 20 and be screwed to the case 20. Of course, in other embodiments, the first locking member 30 may be a bolt-nut assembly, in which case the bolt may be integrally formed with the case 20, and the bolt may penetrate through the first protrusion 1111 and the second protrusion 1211 from a side facing away from the case 20 and be screwed with the nut.

In the present embodiment, in the adjacent two modules 10, the first module 11 includes the first side plate 111 adjacent to the second module 12, the second module 12 includes the second side plate 121 adjacent to the first module 11, the first side plate 111 is provided with the first protrusion 1111, the second side plate 121 is provided with the second protrusion 1211, and the first locking member 30 is configured to connect the first protrusion 1111 and the second protrusion 1211 to the case 20, so that the first locking member 30 connects the first protrusion 1111 and the second protrusion 1211 to the case 20 together. The first locking member 30 connects the first protrusion 1111 and the second protrusion 1211 to the case 20 together so that the first protrusion 1111 and the second protrusion 1211 share the first locking member 30, thereby simplifying the number of locking members required to mount the module 10 to the case 20, increasing the duty ratio of the battery cells 10c per unit mass, and thus increasing the energy density of the battery 100, compared to the manner in which the first protrusion 1111 and the second protrusion 1211 are connected to the case 20 by locking members, respectively.

Referring to fig. 5, in some embodiments, each module 10 further includes a pair of end plates 10a, the pair of end plates 10a being spaced apart in the second direction Y, and a plurality of battery cells 10c being disposed between the pair of end plates 10 a.

As can be appreciated, a pair of side plates 10b fix the plurality of battery cells 10c in the first direction X, and a pair of end plates 10a fix the plurality of battery cells 10c in the second direction Y, so that the plurality of battery cells 10c are grouped.

In some embodiments, to draw current, an output electrode base (not shown) is further provided on the end plate 10 a. The output pole bases can be two, and the positive output pole base and the negative output pole base can be arranged on the same end plate 10a respectively, and the positive output pole base and the negative output pole base can also be arranged on the two end plates 10a respectively.

Referring to fig. 8, in some implementations, along the third direction Z, the projection of the first protrusion 1111 at least partially overlaps the projection of the second protrusion 1211, with the first direction X, the second direction Y, and the third direction Z being perpendicular in pairs.

It can be appreciated that the first protrusions 1111 and the second protrusions 1211 are stacked in the third direction Z. Illustratively, in fig. 8, the first protrusion 1111 is above the second protrusion 1211, and the second protrusion 1211 is below the first protrusion 1111.

In the present embodiment, the projection of the first protrusion 1111 and the projection of the second protrusion 1211 overlap at least partially in the third direction Z, that is, the first protrusion 1111 and the second protrusion 1211 are stacked with a part in the third direction Z, so that the size occupation of the first protrusion 1111 and the second protrusion 1211 in the first direction X and the second direction Y as a whole can be reduced, the size of the battery 100 in the first direction X and the second direction Y can be reduced, the duty ratio of the battery cell 10c per unit volume can be increased, and the energy density of the battery 100 can be further improved.

Referring to fig. 9, fig. 9 is an exploded view of fig. 8. In some embodiments, the first protrusion 1111 includes a first body 11111 and a first stop 11112, and the second protrusion 1211 includes a second body 12111 and a second stop 12112, the first body 11111 being disposed opposite the second body 12111 in the third direction Z. The first limiting portion 11112 is disposed on a side of the first body 11111 facing the second body 12111, the second limiting portion 12112 is disposed on a side of the second body 12111 facing the first body 11111, the first limiting portion 11112 abuts against the second body 12111 along the third direction Z, the second limiting portion 12112 abuts against the first body 11111 along the third direction Z, and the first limiting portion 11112 and the second limiting portion 12112 abut against each other along the second direction Y.

As shown in fig. 8 and 9, the first limiting portion 11112 is a protruding block protruding from the first body 11111, the first limiting portion 11112 is an L-shaped ear plate, the second limiting portion 12112 is a protruding block protruding from the second body 12111, the second limiting portion 12112 is an L-shaped ear plate, and the first protruding portion 1111 is symmetrical to the second protruding portion 1211. Of course, in other embodiments, the first limiting portion 11112 may be a groove formed on the first body 11111, and the second limiting portion 12112 may be a protrusion protruding from the second body 12111. Alternatively, the first limiting portion 11112 may be a bump formed on the first body 11111, and the second limiting portion 12112 may be a groove formed on the second body 12111.

In this embodiment, the first protrusion 1111 includes a first body 11111 and a first limiting portion 11112, the second protrusion 1211 includes a second body 12111 and a second limiting portion 12112, the first limiting portion 11112 abuts against the second body 12111 along the third direction Z, and the second limiting portion 12112 abuts against the first body 11111 along the third direction Z, so that the first protrusion 1111 and the second protrusion 1211 can abut against each other in the third direction Z, one of the first protrusion 1111 and the second protrusion 1211 can support and limit the other, and one of the first module 11 and the second module 12 is limited to move along the third direction Z, thereby improving the stability of the module 10. The first limiting portion 11112 and the second limiting portion 12112 are abutted against each other along the second direction Y, and the displacement amplitude of the first module 11 and the second module 12 along the second direction Y can be limited under the action of the first limiting portion 11112 and the second limiting portion 12112, so that the stability of the module 10 is improved.

Referring to fig. 8 and 9, in some embodiments, the first boss 1111 is provided with a first through hole 11113 and a second through hole 11114, the first through hole 11113 passing through the first body 11111, and the second through hole 11114 passing through the first body 11111 and the first stopper 11112. The second protrusion 1211 is provided with a third through hole 12113 corresponding to the first through hole 11113 and a fourth through hole 12114 corresponding to the second through hole 11114, the third through hole 12113 penetrating the second body 12111 and the second stopper 12112, the fourth through hole 12114 penetrating the second body 12111. The first locking pieces 30 are provided in two, one of the first locking pieces 30 is configured to pass through the first through hole 11113 and the third through hole 12113 to be connected with the case 20, and the other first locking piece 30 is configured to pass through the second through hole 11114 and the fourth through hole 12114 to be connected with the case 20.

Illustratively, as shown in fig. 9, the first through hole 11113 is disposed opposite to the third through hole 12113 along the third direction Z, the aperture of the first through hole 11113 is smaller than that of the third through hole 12113, the smaller aperture of the first through hole 11113 can reduce the moving amount of the first locking member 30, and the larger aperture of the third through hole 12113 facilitates the first locking member 30 to pass through. The second through hole 11114 and the fourth through hole 12114 are oppositely arranged along the third direction Z, the aperture of the second through hole 11114 is larger than that of the fourth through hole 12114, the smaller aperture of the fourth through hole 12114 can reduce the activity of the first locking piece 30, and the larger aperture of the second through hole 11114 is convenient for the first locking piece 30 to pass through.

The two first locking members 30 may be connected to the case 20 in the same or different manners. Alternatively, one of the first locking members 30 may be integrally formed with the case 20, or bonded, welded, and fixedly connected with the case 20, and the first locking member 30 is penetrated from a side of the third through hole 12113 facing away from the second protrusion 1211 and is screw-coupled with the nut. The other first locking member 30 passes through the second through hole 11114 and the fourth through hole 12114 and is screw-coupled with the housing 20. Thus, the difficulty of installing the module 10 can be reduced.

In the present embodiment, the two first locking members 30 can reduce the risk of failure in connection between the first protrusion 1111 and the second protrusion 1211 and the case 20, improve the connection strength between the first protrusion 1111 and the second protrusion 1211 and the case 20, improve the stability of the module 10, and improve the structural strength of the battery 100.

Referring to fig. 6, 7 and 10, fig. 10 is an assembly schematic diagram of a third protrusion 1112 and a fourth protrusion 1212 according to some embodiments of the present application. In some embodiments, a third protrusion 1112 is further provided on a side of the first side plate 111 facing the second side plate 121, a fourth protrusion 1212 is provided on a side of the second side plate 121 facing the first side plate 111, and the battery 100 further includes a second locking member 40, the second locking member 40 being configured to connect the third protrusion 1112 and the fourth protrusion 1212 to the case 20.

The third protrusion 1112 is a connection structure of the first module 11 for connection with the case 20, and the fourth protrusion 1212 is a connection structure of the second module 12 for connection with the case 20. Wherein the third protrusions 1112 and the first protrusions 1111 may have the same or different structures, and the fourth protrusions 1212 and the traumatic protrusions may have the same or different structures.

The structures of the third protrusions 1112 and the fourth protrusions 1212 may be various, and alternatively, the third protrusions 1112 and the fourth protrusions 1212 are ear plates.

The secondary locking member 40 includes, but is not limited to, a bolt, screw, stud, or the like.

In this embodiment, a third protrusion 1112 is further disposed on a side of the first side plate 111 facing the second side plate 121, a fourth protrusion 1212 is disposed on a side of the second side plate 121 facing the first side plate 111, and the second locking member 40 is configured to connect the third protrusion 1112 and the fourth protrusion 1212 to the case 20, so that the connection positions of the first module 11 and the case 20 are increased, the connection positions of the second module 12 and the case 20 are increased, the connection stability of the module 10 and the case 20 can be further improved, and the structural strength of the battery 100 is improved.

Referring to fig. 10 and 11, fig. 11 is an exploded view of fig. 10. In some embodiments, the third protrusion 1112 includes a first portion 11121 and a second portion 11122 disposed opposite one another in the third direction Z, with a gap 11123 formed between the first portion 11121 and the second portion 11122 that accommodates at least a portion of the fourth protrusion 1212. The third protrusion 1112 is provided with a fifth through hole 11124 penetrating the first and second portions 11121 and 11122, the fourth protrusion 1212 is provided with a sixth through hole 12121 corresponding to the fifth through hole 11124, and the second locking member 40 is configured to pass through the fifth and sixth through holes 11124 and 12121 to be connected with the case 20.

Illustratively, in fig. 10 and 11, the first portion 11121 and the second portion 11122 are disposed at intervals along the third direction Z such that a gap 11123 is formed between the first portion 11121 and the second portion 11122, the fifth through-hole 11124 penetrates the first portion 11121 and the second portion 11122, and the fifth through-hole 11124 and the sixth through-hole 12121 are oppositely disposed along the third direction Z.

In the present embodiment, the third protrusion 1112 includes the first portion 11121 and the second portion 11122 that are oppositely arranged along the third direction Z, the gap 11123 accommodating at least part of the fourth protrusion 1212 is formed between the first portion 11121 and the second portion 11122, and the accommodation of at least part of the fourth protrusion 1212 in the gap 11123 can improve the structural strength of the first protrusion 1111 and reduce the risk of deformation of the first protrusion 1111. The second locking piece 40 is configured to pass through the fifth through hole 11124 and the sixth through hole 12121 to be connected with the case 20, enabling connection of the third protrusion 1112, the fourth protrusion 1212, and the case 20, and enabling further improvement in stability of the module 10.

In some embodiments, each module 10 further includes a pair of end plates 10a, the pair of end plates 10a being spaced apart along a second direction Y, the plurality of battery cells 10c being disposed between the pair of end plates 10a, the second direction Y being perpendicular to the first direction X. The first protrusions 1111 are provided in two, and the two first protrusions 1111 are arranged at intervals in the second direction Y. The third protrusions 1112 are provided in plurality, the plurality of third protrusions 1112 are arranged in the second direction Y, and the plurality of third protrusions 1112 are provided between the two first protrusions 1111.

Accordingly, the second protrusions 1211 are provided in two, and the two second protrusions 1211 are arranged at intervals in the second direction Y. The fourth convex portion 1212 is provided in plurality, the plurality of fourth convex portions 1212 are arranged in the second direction Y, and the plurality of fourth convex portions 1212 are provided between the two second convex portions 1211.

It is to be understood that the number of fourth protrusions 1212 corresponds to the number of third protrusions 1112, and the number of second protrusions 1211 corresponds to the number of first protrusions 1111. The number of the third protrusions 1112 may be two, three, four, or the like. In fig. 6 and 7, the number of the third protrusions 1112 is exemplified by three, the three third protrusions 1112 are arranged at intervals in the second direction Y, the number of the fourth protrusions 1212 is also exemplified by three, and the three fourth protrusions 1212 are arranged at intervals in the second direction Y.

In this embodiment, a plurality of third protrusions 1112 are provided, and when one of the third protrusions 1112 fails to be connected to the case 20, the other third protrusions 1112 can still be stably connected to the case 20, so that the stability of the module 10 can be further improved. The plurality of third protrusions 1112 are disposed between the two first protrusions 1111, so that the structural strength of the third protrusions 1112 can be reduced, and the uniformity of the interface of the first side plate 111 can be improved.

In some embodiments, the first module 11 further comprises a third side plate 112 remote from the second module 12, and the second module 12 further comprises a fourth side plate 122 remote from the first module 11. Understandably, the first side plate 111 and the third side plate 112 are a pair of end plates 10a of the first module 11, and the second side plate 121 and the fourth side plate 122 are a pair of end plates 10a of the second module 12.

In some embodiments, the third side plate 112 is identical in structure to the second side plate 121. The fourth side plate 122 has the same structure as the first side plate 111. In this way, the pair of side plates 10b of the first module 11 and the pair of side plates 10b of the second module 12 have the same structure, which facilitates the preparation of each module 10 into the same structure, and realizes the modularization of the modules 10.

In this embodiment, the third side plate 112 and the second side plate 121 have the same structure, and the fourth side plate 122 and the first side plate 111 have the same structure, so that the number of the side plates 10b required by the module 10 is smaller, which is beneficial to realizing standardized batch production of the side plates 10b, reducing the number of the mold types required for producing the side plates 10b, improving the production efficiency and reducing the production cost.

Referring to fig. 3 and 4, in some embodiments, the case 20 includes a bottom wall 21 and a mounting beam 23, the bottom wall 21 is used to support the plurality of modules 10, the mounting beam 23 is mounted to the bottom wall 21, the first locking member 30 is connected to the mounting beam 23, and the second locking member 40 is connected to the mounting beam 23.

Illustratively, in fig. 3 and 4, the mounting beams 23 extend in the second direction Y, the number of mounting beams 23 corresponding to the number of modules 10, and a pair of side walls 22 of each module 10 are respectively connected to the mounting beams 23. Alternatively, a plurality of screw holes may be provided on the mounting beam 23 corresponding to the first locking member 30 and the second locking member 40, respectively, so as to be screw-coupled with the first locking member 30 and the mounting beam 23, and the second locking member 40 is screw-coupled with the mounting beam 23.

In this embodiment, the structural strength of the case 20 can be improved by the mounting beam 23, the structural strength of the junction can be improved by the connection of the mounting beam 23 and the first locking member 30, the structural strength of the junction can be improved by the connection of the mounting beam 23 and the second locking member 40, the stability of the module 10 is improved, and the structural strength of the battery 100 is improved.

The embodiment of the application also provides electric equipment, which comprises the battery 100 provided by any one of the embodiments, and the battery 100 is used for supplying power to the electric equipment.

The embodiment also provides a battery 100, wherein the battery 100 comprises a case 20, a plurality of modules 10, a first locking member 30 and a second locking member 40.

The case 20 includes a bottom wall 21, side walls 22, and mounting beams 23, the side walls 22 surrounding the bottom wall 21, the mounting beams 23 being mounted to the bottom wall 21 and accommodated in the case 20.

Each module 10 includes a pair of side plates 10b, a pair of end plates 10a, and a plurality of battery cells 10c. The first side plates 111 are arranged at intervals in the first direction X, the pair of end plates 10a are arranged at intervals in the second direction Y, the plurality of battery cells 10c are arranged in the first direction X, the plurality of battery cells 10c are disposed between the pair of end plates 10a, and the plurality of battery cells 10c are disposed between the pair of side plates 10 b.

The plurality of modules 10 includes adjacent first and second modules 11 and 12, and the first module 11 includes first and third side plates 111 and 112 arranged at intervals along the first direction X. The second module 12 includes a second side plate 121 and a fourth side plate 122 arranged at intervals along the first direction X, the first side plate 111 is adjacent to the second module 12, and the second side plate 121 is adjacent to the first module 11.

Two first protrusions 1111 and three third protrusions 1112 are provided on a side of the first side plate 111 facing the second side plate 121, and two second protrusions 1211 and three fourth protrusions 1212 are provided on a side of the second side plate 121 facing the first side plate 111. The two first protrusions 1111 are arranged at intervals in the second direction Y, the three third protrusions 1112 are arranged in the second direction Y, and the three third protrusions 1112 are disposed between the two first protrusions 1111. The two second protrusions 1211 are arranged at intervals in the second direction Y, the three fourth protrusions 1212 are arranged in the second direction Y, and the three fourth protrusions 1212 are disposed between the two second protrusions 1211.

The first protrusion 1111 is an L-shaped ear plate, the first protrusion 1111 includes a first body 11111 and a first limiting portion 11112, the second protrusion 1211 is an L-shaped ear plate, two first protrusions 1111 are symmetrically disposed, symmetry axes of the two first protrusions 1111 are parallel to the first direction X, two second protrusions 1211 are symmetrically disposed, and symmetry axes of the two second protrusions 1211 are parallel to the first direction X. The second projection 1211 includes a second body 12111 and a second stopper 12112, and the first body 11111 is arranged opposite to the second body 12111 in the third direction Z. The first limiting portion 11112 is disposed on a side of the first body 11111 facing the second body 12111, the second limiting portion 12112 is disposed on a side of the second body 12111 facing the first body 11111, the first limiting portion 11112 abuts against the second body 12111 along the third direction Z, the second limiting portion 12112 abuts against the first body 11111 along the third direction Z, and the first limiting portion 11112 and the second limiting portion 12112 abut against each other along the second direction Y. The first protruding portion 1111 is provided with a first through hole 11113 and a second through hole 11114, the first through hole 11113 penetrates the first body 11111, and the second through hole 11114 penetrates the first body 11111 and the first limiting portion 11112. The second boss 1211 is provided with a third through hole 12113 corresponding to the first through hole 11113 and a fourth through hole 12114 corresponding to the second through hole 11114, the third through hole 12113 penetrating the second body 12111 and the second stopper 12112, the fourth through hole 12114 penetrating the second body 12111, the first locking member 30 being provided with two, one first locking member 30 being configured to pass through the first through hole 11113 and the third through hole 12113 to be screw-coupled with the mounting beam 23, and the other first locking member 30 being configured to pass through the second through hole 11114 and the fourth through hole 12114 to be screw-coupled with the mounting beam 23.

The third protrusion 1112 includes a first portion 11121 and a second portion 11122 that are oppositely disposed along the third direction Z, with a gap 11123 formed between the first portion 11121 and the second portion 11122 that accommodates at least a portion of the fourth protrusion 1212. The third protrusion 1112 is provided with a fifth through hole 11124 penetrating the first and second portions 11121 and 11122, the fourth protrusion 1212 is provided with a sixth through hole 12121 corresponding to the fifth through hole 11124, and the second locking member 40 is configured to pass through the fifth and sixth through holes 11124 and 12121 to be screw-coupled with the mounting beam 23. The third side plate 112 has the same structure as the second side plate 10b, and the fourth side plate 122 has the same structure as the first side plate 111.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

The above embodiments are only for illustrating the technical solution of the present application, and are not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A battery, comprising:

A case;

the plurality of modules are accommodated in the box body, the plurality of modules are arranged along a first direction, each module comprises a pair of side plates and a plurality of battery cells, the pair of side plates are arranged at intervals along the first direction, and the plurality of battery cells are arranged between the pair of side plates;

2. The battery of claim 1, wherein each of said modules further comprises a pair of end plates, a pair of said end plates being spaced apart along a second direction, a plurality of said battery cells being disposed between a pair of said end plates;

and the projection of the first convex part and the projection of the second convex part are at least partially overlapped along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

3. The battery according to claim 2, wherein the first protruding portion includes a first body and a first stopper portion, the second protruding portion includes a second body and a second stopper portion, and the first body and the second body are arranged opposite to each other in the third direction;

4. The battery according to claim 3, wherein the first protrusion is provided with a first through hole penetrating the first body and a second through hole penetrating the first body and the first stopper;

5. The battery of claim 2, wherein a side of the first side plate facing the second side plate is further provided with a third protrusion, a side of the second side plate facing the first side plate is provided with a fourth protrusion, the battery further comprising a second locking member configured to connect the third protrusion and the fourth protrusion to the case.

6. The battery of claim 5, wherein the third protrusion includes a first portion and a second portion disposed opposite in the third direction, the first portion and the second portion forming a gap therebetween that accommodates at least a portion of the fourth protrusion;

7. The battery of claim 5 or 6, wherein each of said modules further comprises a pair of end plates, a pair of said end plates being spaced apart along a second direction, a plurality of said battery cells being disposed between a pair of said end plates, said second direction being perpendicular to said first direction;

8. The battery of claim 5 or 6, wherein the first module further comprises a third side plate remote from the second module, the second module further comprising a fourth side plate remote from the first module;

the third side plate and the second side plate have the same structure;

the fourth side plate has the same structure as the first side plate.

9. The battery of claim 5 or 6, wherein the case includes a bottom wall for supporting a plurality of the modules and a mounting beam mounted to the bottom wall, the first locking member being connected to the mounting beam, and the second locking member being connected to the mounting beam.

10. A powered device comprising a battery as claimed in any one of claims 1-9.