CN219086176U

CN219086176U - Battery and electric equipment

Info

Publication number: CN219086176U
Application number: CN202223279685.7U
Authority: CN
Inventors: 侯羽佳
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-01-13
Filing date: 2022-12-07
Publication date: 2023-05-26
Anticipated expiration: 2032-12-07
Also published as: CN116134669A; WO2023133749A1

Abstract

A battery and powered device are provided. The battery includes: a case; the battery module is arranged along a first direction and accommodated in the box body, wherein the end part of the battery module in a second direction is provided with a fixing structure, the second direction is perpendicular to the first direction, the fixing structure is used for fixing the battery module in the box body, and the fixing structure is provided with a first clamping part; the connecting piece is provided with second joint portion, and second joint portion and first joint portion joint are in order to connect adjacent battery module in a plurality of battery modules along first direction. According to the technical scheme, the performance of the battery can be improved.

Description

Battery and electric equipment

Cross Reference to Related Applications

The present application claims priority from PCT international application PCT/CN2022/071724 entitled "battery, powered device, method and apparatus for making a battery" filed on 13, 2022, 01, the entire contents of which are incorporated herein by reference.

Technical Field

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

Background

With the increasing increase of environmental pollution, the new energy industry is receiving more and more attention. In the new energy industry, battery technology is an important factor in its development.

In the battery technology, besides improving the electric quantity and energy density of the battery, the structural strength of the battery cannot be ignored. How to improve the structural strength of the battery is a technical problem to be solved in the battery technology.

Disclosure of Invention

The application provides a battery and consumer, can improve the structural strength of battery, ensure the security performance of battery.

In a first aspect, there is provided a battery comprising: a case; the battery module is arranged along a first direction and accommodated in the box body, wherein a fixing structure is arranged at the end part of the battery module in a second direction, the second direction is perpendicular to the first direction, the fixing structure is used for fixing the battery module to the box body, and a first clamping part is arranged on the fixing structure; the connecting piece is provided with a second clamping part, and the second clamping part is clamped with the first clamping part so as to connect adjacent battery modules in the plurality of battery modules along the first direction.

In this application embodiment, a plurality of battery modules hold in the box along first direction, and battery module is provided with fixed knot in the ascending tip of second direction and constructs, and battery module is fixed in the box through fixed knot constructs, is provided with first joint portion on the fixed knot constructs, is provided with second joint portion on the connecting piece, and first joint portion and the mutual joint of second joint portion have realized the connection between the adjacent battery module. The adjacent battery modules are connected in the clamping mode, so that the overall structural strength of the battery is improved, the safety performance of the battery is guaranteed, and the connecting mode is convenient, quick and efficient.

In one possible implementation manner, the first clamping portion is a clamping groove, and the second clamping portion is a buckle, and the buckle is used for being clamped into the clamping groove. Through the clamping groove, the clamping of the first clamping part and the second clamping part is realized.

In one possible implementation, the fixing structure includes a turnover part, and the turnover part turns over to form the clamping groove. The clamping groove is formed by turning the turning part, the process is simple in process and easy to operate, and the manufacturing process of the clamping groove is simplified.

In one possible implementation, the clamping groove comprises a limiting hole, and the buckle comprises a protrusion for being clamped into the limiting hole to limit the movement of the buckle in the clamping groove. Through inserting the protruding card into spacing hole, protruding and spacing hole mutually support, can play spacing effect to second joint portion, guarantee the fastness of joint between first joint portion and the second joint portion.

In one possible implementation manner, the connecting piece is a U-shaped connecting piece, and two ends of the U-shaped connecting piece along the first direction are respectively provided with the second clamping parts, and are used for respectively connecting the fixing structures of the adjacent battery modules in the plurality of battery modules. Thus, one second clamping part in the U-shaped connecting piece is clamped with the first clamping part of one battery module, and the other second clamping part is clamped with the first clamping part of the other battery module in the two adjacent battery modules, so that the connection of the adjacent battery modules is realized.

In one possible implementation, the connection is an elastic connection. The connecting piece is the elastic connecting piece, like this, when first joint portion and second joint portion do not align completely, first joint portion still can with second joint portion joint to reduce the requirement to machining precision, tolerance, reduced the processing degree of difficulty, reduced the cost.

In one possible implementation, the battery module includes: each of the N rows of battery cells comprises a plurality of battery cells arranged along the second direction, the N rows of battery cells are arranged along the first direction, and N is an integer greater than 1; the N-1 separation plates extend along the second direction and are arranged between two adjacent rows of battery monomers, and the separation plates are fixedly connected with each battery monomer in the two rows of battery monomers; the end part of the partition board in the second direction is provided with the fixing structure, and the partition board is fixed on the box body through the fixing structure.

Set up the baffle between two adjacent single battery of battery module, this baffle and every single battery fixed connection in these two single battery of battery, set up fixed knot in the tip of baffle and construct, the baffle is fixed in the box through fixed knot constructs. Therefore, each battery unit in the battery is fixed on the box body by the partition plate and the fixing structure, so that each battery unit can transmit the load to the box body, and the structural strength of the battery is ensured; under the condition, the outer side of the battery module can be provided with no side plate, the middle part of the box body is not required to be provided with structures such as a beam, and the space utilization rate of the inside of the battery can be greatly improved, so that the energy density of the battery is improved.

In one possible implementation manner, the fixing structure includes a fixing plate, where the fixing plate is fixedly connected with the end portion of the separator, and is fixedly connected with a battery cell located at the end portion of the separator, and the first clamping portion is disposed on the fixing plate.

The fixed plate is fixedly connected with the end part of the partition plate, so that the fixing effect on the battery cells can be further enhanced. The first clamping part is arranged on the fixed plate, and the first clamping part and the second clamping part are clamped with each other to connect the adjacent fixed plates, so that the adjacent battery modules are connected.

In one possible implementation manner, the fixing plate includes a first connection portion, the first connection portion is used for connecting the box, and the first clamping portion is disposed at one end of the fixing plate far away from the first connection portion.

The first connecting part is connected with the box body, so that the fixed connection between the fixed plate and the box body can be realized; through setting up first joint portion in the one end of keeping away from first connecting portion of fixed plate, first joint portion and second joint portion are in the one end mutual joint of keeping away from first connecting portion to connect adjacent battery module in the one end of keeping away from first connecting portion. Like this, fixed battery module has been carried out in the one end that keeps away from first connecting portion of first connecting portion department and fixed plate respectively, and then has guaranteed the structural strength of battery.

In one possible implementation manner, the first connection portion is disposed at an end of the fixing plate, which is close to the bottom wall of the case, and the first clamping portion is disposed at an end of a first edge of the fixing plate, which is far away from the bottom wall of the case, and the first edge is an edge perpendicular to the bottom wall of the case and adjacent to an adjacent battery module.

The bottom wall of the box body is connected through the first connecting part, so that the fixed connection between the fixed plate and the bottom wall of the box body can be realized, and the single load of the battery can be transferred to the bottom wall of the box body, thereby ensuring the structural strength of the battery. The first clamping part is arranged at one end of the first side of the fixing plate, which is far away from the bottom wall of the box body, and the first clamping part and the second clamping part are mutually clamped at one end of the bottom wall of the box body, so that adjacent battery modules are connected at one end of the bottom wall of the box body. Like this, fixed battery module in box diapire department and keep away from box diapire department respectively, guaranteed the structural strength of battery. The first side is perpendicular to the bottom wall of the box body and is adjacent to the adjacent battery modules, and the adjacent two battery modules are connected through the adjacent first side, so that the structural strength of the battery modules is improved.

In one possible implementation manner, the first connection portion is disposed at an end of the fixing plate, which is close to the bottom wall of the case, and the first clamping portion is disposed at an end of a second edge of the fixing plate, which is close to the adjacent battery module, and the second edge is an edge far away from the bottom wall of the case. Through connecting adjacent second limit and then having connected two adjacent battery modules in the position of keeping away from the diapire of box, improved the structural strength of a plurality of battery modules.

In a second aspect, there is provided a powered device comprising: a battery as in the first aspect or any possible implementation of the first aspect, for providing electrical energy.

In a third aspect, there is provided a method of preparing a battery, comprising: providing a box body; providing a plurality of battery modules, wherein the battery modules are arranged along a first direction, the end parts of the battery modules in a second direction are provided with fixing structures, the second direction is perpendicular to the first direction, and the fixing structures are provided with first clamping parts; providing a connecting piece, wherein the connecting piece is provided with a second clamping part; the plurality of battery modules are accommodated in the box body, the battery modules are fixed in the box body through the fixing structure, and the second clamping part is clamped with the first clamping part so as to connect adjacent battery modules in the plurality of battery modules along the first direction.

In a fourth aspect, there is provided an apparatus for preparing a battery, comprising: a providing module for providing a plurality of battery modules, a case, and a connection member; the battery module comprises a plurality of battery modules, a plurality of connecting pieces and a plurality of connecting pieces, wherein the battery modules are arranged along a first direction, the end parts of the battery modules in a second direction are provided with fixing structures, the second direction is perpendicular to the first direction, the fixing structures are provided with first clamping parts, and the connecting pieces are provided with second clamping parts; the mounting module is used for accommodating the plurality of battery modules in the box body, fixing the battery modules in the box body through the fixing structure, and clamping the second clamping part with the first clamping part so as to connect adjacent battery modules in the plurality of battery modules along the first direction.

According to the technical scheme, the battery modules are contained in the box body along the first direction, the end portions of the battery modules in the second direction are provided with the fixing structures, the battery modules are fixed to the box body through the fixing structures, the fixing structures are provided with the first clamping portions, the connecting pieces are provided with the second clamping portions, the first clamping portions and the second clamping portions are mutually clamped, and connection between adjacent battery modules is achieved. The adjacent battery modules are connected in the clamping mode, so that the overall structural strength of the battery is improved, the safety performance of the battery is guaranteed, and the connecting mode is efficient and quick.

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 of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a vehicle according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a battery according to an embodiment of the present application;

FIG. 3 is a schematic illustration of a battery cell according to an embodiment of the present application;

FIG. 4a is a schematic diagram of a battery according to an embodiment of the present application;

FIG. 4b is an enlarged schematic view of area A in FIG. 4 a;

FIG. 5 is a schematic illustration of a fastening structure engaged with a connector according to an embodiment of the present disclosure;

fig. 6 is a side view of a battery module according to an embodiment of the present application;

FIG. 7 is a schematic illustration of a securing structure according to an embodiment of the present application;

FIG. 8 is a schematic view of a connector according to an embodiment of the present application;

fig. 9a is a schematic view of a battery module according to an embodiment of the present application;

fig. 9b is a schematic view of a battery module according to an embodiment of the present application;

fig. 10 is a schematic view of a battery module according to an embodiment of the present application;

Fig. 11 is a schematic flow chart of a method of making a battery according to an embodiment of the present application;

fig. 12 is a schematic block diagram of an apparatus for preparing a battery according to an embodiment of the present application.

In the drawings, the drawings are not drawn to scale.

Detailed Description

Embodiments of the present application are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the present application and are not intended to limit the scope of the application, i.e., the application is not limited to the embodiments described.

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.

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. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

In the present application, the battery cell may include 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, which is not limited by the embodiment of the present application. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft package battery cell are not limited thereto.

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 pack or the like. The battery generally includes a case for enclosing one or more battery cells. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

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 to move between the positive and negative electrode plates to operate. 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 current collector without the positive electrode active material layer protrudes out of the current collector coated with the positive electrode active material layer, and the 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 material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. 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 current collector without the negative electrode active material layer protrudes out of the current collector with the coated negative electrode active material layer, and the current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and 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 isolation film can be polypropylene (PP) or Polyethylene (PE). In addition, the electrode assembly may be a wound structure or a lamination structure, and the embodiment of the present application is not limited thereto.

To meet different power demands, a battery may include a plurality of battery cells, where the plurality of battery cells may be connected in series or parallel or a series-parallel connection, which refers to a mixture of series and parallel. Optionally, the plurality of battery cells may be connected in series or parallel or in series-parallel to form a battery module, and then the plurality of battery modules are connected in series or parallel or in series-parallel to form a battery. That is, a plurality of battery cells may be directly assembled into a battery, or may be assembled into a battery module first, and the battery module may be assembled into a battery. The battery is further arranged in the electric equipment to provide electric energy for the electric equipment.

The development of battery technology is taking into consideration various design factors such as energy density, cycle life, discharge capacity, charge-discharge rate, safety, etc. Under the condition that the internal space of the battery is certain, the utilization rate of the internal space of the battery is improved, and the method is an effective means for improving the energy density of the battery. However, while improving the utilization of the internal space of the battery, there is a possibility that the structural strength of the battery may be reduced. For example, a beam for mounting a battery module is usually provided inside a case of a battery, and a side plate and an end plate are also provided for the battery module in the battery. The beams, the side plates and the end plates occupy the internal space of the battery while realizing the fixation of the battery. However, if the beam, the side plate, and the end plate are not provided, the structural strength of the battery is insufficient, and the performance of the battery is affected.

In view of this, this application embodiment provides a technical scheme, holds a plurality of battery modules in the box along first direction, sets up fixed knot in the second direction of battery module's tip and constructs, is fixed in the box with battery module through fixed knot constructs, sets up first joint portion on fixed knot constructs, sets up second joint portion on the connecting piece, and first joint portion and the mutual joint of second joint portion are in order to connect adjacent battery module in a plurality of battery modules. Like this, can connect adjacent battery module through the connected mode of joint to improve the overall structure intensity of battery.

The technical solutions described in the embodiments of the present application are applicable to various devices using batteries, for example, mobile phones, portable devices, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships, spacecraft, and the like, and for example, spacecraft include airplanes, rockets, space shuttles, spacecraft, and the like.

It should be understood that the technical solutions described in the embodiments of the present application are not limited to the above-described devices, but may be applied to all devices using batteries, but for simplicity of description, the following embodiments are described by taking an electric vehicle as an example.

For example, as shown in fig. 1, a schematic structural diagram of a vehicle 1 according to an embodiment of the present application, the vehicle 1 may be a fuel-oil vehicle, a gas-fired vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The vehicle 1 may be provided with a motor 40, a controller 30 and a battery 10, the controller 30 being arranged to control the battery 10 to supply power to the motor 40. For example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, e.g. the battery 10 may be used as an operating power source for the vehicle 1, for electrical circuitry of the vehicle 1, e.g. for start-up, navigation and operational power requirements of the vehicle 1. In another embodiment of the present application, the battery 10 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.

To meet different power usage requirements, the battery 10 may include a plurality of battery cells. For example, as shown in fig. 2, a schematic structure of a battery 10 according to an embodiment of the present application, the battery 10 may include a plurality of battery cells 20. The battery 10 may further include a case 11, in which the case 11 has a hollow structure, and the plurality of battery cells 20 are accommodated in the case 11. For example, a plurality of battery cells 20 are connected in parallel or in series-parallel combination with each other and then placed in the case 11.

Alternatively, the battery 10 may further include other structures, which are not described in detail herein. For example, the battery 10 may further include a bus member for making electrical connection between the plurality of battery cells 20, such as parallel or series-parallel connection. Specifically, the bus member may realize electrical connection between the battery cells 20 by connecting electrode terminals of the battery cells 20. Further, the bus member may be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the plurality of battery cells 20 may be further drawn through the housing by a conductive mechanism. Alternatively, the conductive means may also belong to the bus bar member.

The number of battery cells 20 may be set to any number according to different power requirements. The plurality of battery cells 20 may be connected in series, parallel, or series-parallel to achieve a larger capacity or power. Since the number of battery cells 20 included in each battery 10 may be large, the battery cells 20 may be arranged in groups for easy installation, and each group of battery cells 20 constitutes a battery module. The number of battery cells 20 included in the battery module is not limited, and may be set according to requirements. The battery may include a plurality of battery modules, which may be connected in series, parallel, or series-parallel.

As shown in fig. 3, a schematic structure of a battery cell 20 according to an embodiment of the present application, the battery cell 20 includes one or more electrode assemblies 22, a case 211, and a cap plate 212. The housing 211 and the cover 212 form a case or battery compartment 21. The wall of the case 211 and the cover plate 212 are referred to as the wall of the battery cell 20, wherein for a rectangular parallelepiped type battery cell 20, the wall of the case 211 includes a bottom wall and four side walls. The case 211 is determined according to the shape of the combined one or more electrode assemblies 22, for example, the case 211 may be a hollow rectangular parallelepiped or square or cylindrical body, and one face of the case 211 has an opening so that one or more electrode assemblies 22 may be placed in the case 211. For example, when the housing 211 is a hollow rectangular parallelepiped or square, one of the planes of the housing 211 is an opening surface, i.e., the plane has no wall body so that the inside and outside of the housing 211 communicate. When the housing 211 may be a hollow cylinder, the end surface of the housing 211 is an open surface, i.e., the end surface has no wall body so that the inside and outside of the housing 211 communicate. The cap plate 212 covers the opening and is connected with the case 211 to form a closed cavity in which the electrode assembly 22 is placed. The housing 211 is filled with an electrolyte, such as an electrolyte solution.

The battery cell 20 may further include two electrode terminals 214, and the two electrode terminals 214 may be disposed on the cap plate 212. The cap plate 212 is generally in the shape of a flat plate, and two electrode terminals 214 are fixed to the flat plate surface of the cap plate 212, the two electrode terminals 214 being a positive electrode terminal 214a and a negative electrode terminal 214b, respectively. One connection member 23, or may also be referred to as a current collecting member 23, is provided for each electrode terminal 214, which is located between the cap plate 212 and the electrode assembly 22, for electrically connecting the electrode assembly 22 and the electrode terminal 214.

As shown in fig. 3, each electrode assembly 22 has a first tab 221a and a second tab 222a. The polarities of the first tab 221a and the second tab 222a are opposite. For example, when the first tab 221a is a positive tab, the second tab 222a is a negative tab. The first tab 221a of one or more electrode assemblies 22 is connected to one electrode terminal through one connection member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to the other electrode terminal through the other connection member 23. For example, the positive electrode terminal 214a is connected to the positive electrode tab through one connection member 23, and the negative electrode terminal 214b is connected to the negative electrode tab through the other connection member 23.

In the battery cell 20, the electrode assemblies 22 may be provided in a single unit, or in a plurality of units, as shown in fig. 3, according to actual use requirements, and 4 individual electrode assemblies 22 are provided in the battery cell 20.

A pressure release mechanism 213 may also be provided on the battery cell 20. The pressure release mechanism 213 is used to actuate to release the internal pressure or temperature of the battery cell 20 when the internal pressure or temperature reaches a threshold.

The pressure relief mechanism 213 may be any of a variety of possible pressure relief structures, and embodiments of the present application are not limited in this regard. For example, the pressure release mechanism 213 may be a temperature-sensitive pressure release mechanism configured to be able to melt when the internal temperature of the battery cell 20 provided with the pressure release mechanism 213 reaches a threshold value; and/or the pressure relief mechanism 213 may be a pressure sensitive pressure relief mechanism configured to rupture when the internal air pressure of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value.

Fig. 4a is a schematic view of a battery according to an embodiment of the present application, and fig. 4b is an enlarged schematic view of a region a in fig. 4 a. Fig. 5 is a schematic diagram illustrating a fastening structure and a connector according to an embodiment of the present application. The present embodiments provide a battery 10. The battery 10 includes a case 11, a plurality of battery modules 100, and a connector 400. The plurality of battery modules 100 are arranged in the first direction and accommodated in the case 11. The end of the battery module 100 in the second direction is provided with a fixing structure 102, and the second direction is perpendicular to the first direction. The fixing structure 102 is used for fixing the battery module 100 to the case 11, and the fixing structure 102 is provided with a first engaging portion 301. The connection member 400 is provided with a second clamping portion 401, and the second clamping portion 401 is clamped with the first clamping portion 301 to connect adjacent battery modules 100 among the plurality of battery modules 100 along the first direction.

The plurality of battery modules 100 are arranged in a first direction, which may be a y direction, and accommodated in the case 11. The end of the battery module 100 in the second direction, which may be the x-direction, is provided with a fixing structure 102, and the first direction is perpendicular to the second direction.

The fixing structure 102 may be disposed at both ends of the battery module 100 in the x direction, and the fixing structure 102 is provided with the first clamping portion 301. The connection member 400 is provided with a second clamping portion 401, and the first clamping portion 301 and the second clamping portion 401 are clamped to each other in the first direction, thereby connecting the adjacent battery modules 100 in the first direction. Therefore, the structural strength of the battery 10 can be improved, the safety performance of the battery 10 is guaranteed, and the connection mode of the clamping connection is more convenient, quick and efficient.

In some embodiments, the first clamping portion 301 is a clamping groove, and the second clamping portion 401 is a buckle, and the buckle is used for clamping into the clamping groove.

Optionally, in an embodiment of the present application, the first clamping portion 301 may be a buckle, and the second clamping portion 401 is a slot, and the buckle is clamped into the slot to connect adjacent battery modules 100.

Through the clamping groove, the clamping of the first clamping part and the second clamping part is realized.

Fig. 6 is a schematic view of a battery module according to an embodiment of the present application. In some embodiments, the securing structure 102 includes a fold 1021, the fold 1021 being folded to form a detent.

Optionally, in an embodiment of the present application, the turnover part 1021 is located at an end of the fixing structure near the adjacent battery module 100, and the turnover part 1021 may be turned in the second direction toward a direction away from the battery module 100 to form a clamping groove, or may be turned in the vertical direction toward a direction near the bottom wall of the case to form a clamping groove. The clamping groove is formed by the turnover part fixing structure 102, the manufacturing process is simple, the operation is easy, and the manufacturing process of the clamping groove is simplified.

Fig. 7 is a schematic view of a fixing structure according to an embodiment of the present application, and fig. 8 is a schematic view of a connecting piece according to an embodiment of the present application. In some embodiments, the clip slot includes a spacing hole 3011 and the clasp includes a protrusion 4011, the protrusion 4011 for snapping into the spacing hole 3011 to limit movement of the clasp within the clip slot.

Through with protruding 4011 card income spacing hole 3011, protruding 4011 and spacing hole 3011 butt can play spacing effect to the buckle, prevents that the buckle from sliding out from the draw-in groove, and then guarantees the fastness of joint between buckle and the draw-in groove.

In some embodiments, the connecting member 400 is a U-shaped connecting member, and two ends of the U-shaped connecting member along the first direction are respectively provided with a second clamping portion 401 for respectively connecting the fixing structures 102 of the adjacent battery modules 100 in the plurality of battery modules 100. In this way, one second clamping portion 401 in the U-shaped connecting member 400 is clamped with the first clamping portion 301 of one battery module 100, and the other second clamping portion 401 is clamped with the first clamping portion 301 of the other battery module 100 in the two adjacent battery modules 100, so that connection of the adjacent battery modules 100 is realized.

In some embodiments, the connector 400 is a resilient connector. Thus, when the first clamping portion 301 and the second clamping portion 401 are not completely aligned, the first clamping portion 301 can still be clamped with the second clamping portion 401 due to the elasticity of the connecting piece 400, so that requirements on machining precision and tolerance are reduced, machining difficulty is reduced, and cost is reduced.

Fig. 9a is a schematic view of a battery module 100 according to an embodiment of the present application, and fig. 9b is a schematic view of a battery module 100 according to an embodiment of the present application. In some embodiments, the battery module 100 includes N columns of battery cells 20 and N-1 separators 101. Each of the N rows of battery cells 20 includes a plurality of battery cells 20 arranged in a second direction, the N rows of battery cells 20 being arranged in the first direction, N being an integer greater than 1. The separator 101 extends along the second direction and is disposed between two adjacent rows of the battery cells 20, and the separator 101 is fixedly connected with each battery cell 20 in the two rows of the battery cells 20. The end portion of the partition plate 101 in the second direction is provided with a fixing structure 102, and the partition plate 101 is fixed to the case 11 by the fixing structure 102.

Two adjacent rows of battery cells 20 may be fixed to both sides of the separator 101, respectively, that is, each of the two adjacent rows of battery cells 20 may be fixedly connected by one separator 101. For example, the separators 101 are disposed vertically, i.e., the separators 101 are disposed between two rows of the battery cells 20 perpendicular to the first direction.

The separator 101 is disposed inside the battery module 100, and the separator 101 is not disposed outside the battery module 100. For example, one separator 101 is provided between two rows of the battery cells 20, two separators 101 are provided between three rows of the battery cells 20, and so on. By this arrangement, each of the battery cells 20 in the battery module 100 can be fixedly connected by the separators 101 using fewer separators 101.

Alternatively, the separator 101 may be a metal plate, for example, may be a steel plate or an aluminum plate, or may be a plastic plate, and the material of the separator 101 may also be a composite material, for example, a surface of the metal plate is coated with other materials, which is not limited in the embodiment of the present application.

Alternatively, the thickness of the spacer 101 may be 0.1-0.5mm, for example, in one embodiment of the present application, the thickness of the spacer 101 may be 0.2-0.4mm. The use of the spacer 101 having such a thickness can reduce the space occupied by the spacer 101 while ensuring strength.

The fixing structure 102 is disposed at the end of the separator 101 in the second direction, the separator 101 is fixed to the case 11 by the fixing structure 102, and as described above, each battery cell 20 in the battery module 100 is fixedly connected by the separator 101, and then the fixing structure 102 can achieve the fixed connection of each battery cell 20 with the case 11. In this way, each battery cell 20 in the battery 10 is fixed to the case 11 by the separator 101 and the fixing structure 102, and thus each battery cell 20 can transmit its load to the case 11, guaranteeing the structural strength of the battery 10. Under the condition, the outer side of the battery module can be provided with no side plate, the middle part of the box body is not required to be provided with structures such as a beam, and the space utilization rate of the inside of the battery can be greatly improved, so that the energy density of the battery is improved. Because the first clamping part 301 on the fixing structure 102 and the second clamping part 401 of the connecting piece 400 are mutually clamped, the adjacent battery modules 100 are connected through the connecting piece 400, so that the overall structural strength of the battery modules 100 inside the battery 10 is improved. Thus, the battery 10 has both higher structural strength and higher energy density.

In some embodiments, the fixing structure 102 includes a fixing plate 104, where the fixing plate 104 is fixedly connected to an end of the separator 101 and is fixedly connected to the battery cell 20 located at the end of the separator 101, and the first clamping portion 301 is disposed on the fixing plate 104.

Alternatively, for example, for the rectangular battery cell 20, the fixing plate 104 may be vertically connected to the separator 101 and respectively connected to two adjacent side walls of the rectangular battery cell 20 with the separator 101, thereby further enhancing the fixing effect on the battery cell 20.

Alternatively, the fixing plate 104 may be made of the same material as the partition 101, for example, metal, plastic, or a composite material. The thickness of the fixing plate 104 may be the same as that of the partition 101. The material or thickness of the fixing plate 104 may also be different from that of the partition 101, for example, the fixing plate 104 may be provided with higher strength or thickness, but the embodiment of the present application is not limited thereto.

Alternatively, the connection manner between the partition 101 and the fixing plate 104 may be a connection manner such as resistance welding, resistance riveting, SPR riveting, locking bolt or clamping; the fixing plate 104 may be fixed to the case by a connection method such as resistance welding, resistance riveting, SPR riveting, locking bolts or clamping, but the embodiment of the present application is not limited thereto.

Alternatively, the fixing plate 104 and the battery cell 20 may be fixedly connected by an adhesive, for example, by a structural adhesive, but the embodiment of the present application is not limited thereto.

The first engaging portion 301 is provided on the fixing plate 104, and for example, the first engaging portion may be provided on the side of the fixing plate 104 adjacent to the adjacent battery module 100. In this way, the first engaging portion 301 and the second engaging portion 302 can be engaged with each other, so that the adjacent fixing plates 104 can be connected, and the adjacent battery modules 100 can be further connected.

Fig. 10 is a schematic view of a battery module 100 according to another embodiment of the present application. In some embodiments, the fixing plate 104 includes a first connecting portion 105, the first connecting portion 105 is used for connecting the box 11, and the first clamping portion 301 is disposed at an end of the fixing plate 104 away from the first connecting portion 105.

The fixing plate 104 includes a first connection portion 105 extending in a direction away from the battery module 100 in the second direction, the first connection portion 105 being for connecting the wall of the case 11. The first connecting portion 105 may be connected to the bottom wall of the case 11, or may be connected to the side wall of the case 11, which is not limited in this embodiment.

The first connection 105 may be parallel to the wall of the connected box 11, e.g. the first connection 105 is parallel to the bottom wall of the box 11. The area of the first connection portion 105 may be set according to the fixing manner with the wall of the connected case 11 to satisfy the desired fixing effect.

Alternatively, in one embodiment of the present application, the first connection portion 105 may be formed by bending the fixing plate 104. For example, the first connection part 105 may be formed by bending an edge of the fixing plate 104, which is close to the connected wall, in a direction away from the battery module 100. Taking the bottom wall of the connection box 11 as an example, the lower edge of the fixing plate 104 may be bent outward to form the first connection portion 105. In this way, the first connection portion 105 is integrally formed with the body of the fixing plate 104, so that the connection performance can be enhanced.

By connecting the walls of the case 11 through the first connection part 105, the fixed connection of the fixing plate 104 and the walls of the case 11 can be achieved, so that the load of the battery cell 20 can be transferred to the walls of the case 11, thereby ensuring the structural strength of the battery 10.

The fixing plate 104 is provided with the first clamping portion 301 at one end far away from the first connecting portion 105, and the first clamping portion 301 and the second clamping portion 302 are mutually clamped and connected, so that adjacent battery modules 100 can be connected along the first direction at one end far away from the first connecting portion 105, and therefore a plurality of battery modules 100 are connected, and overall structural strength of the plurality of battery modules 100 is improved.

Alternatively, in one embodiment of the present application, the fixing plate 104 further includes a second connection portion 107 formed to extend in a second direction away from the battery module 100, and the second connection portion 107 is used to connect the fixing plate 104 and the separator 101. For example, at the position where the fixing plate 104 is connected to the separator 101, the second connection portion 107 may be formed to extend in a direction away from the battery module 100, that is, outwardly, and the fixing plate 104 is fixedly connected to the separator 101 through the second connection portion 107.

Alternatively, the second connection portion 107 may also simultaneously achieve connection between the fixing plates 104 in addition to the connection of the partition plate 101. For example, one fixing plate 104 is provided for each row of battery cells 20 in the battery module 100, and the separators 101 in the battery module 100 are fixed to the two fixing plates 104 corresponding to the two rows of battery cells 20 by the second connection portions 107.

The second connection portion 107 may be parallel to the partition 101. The area of the second connection portion 107 may be set according to a fixing manner to satisfy a desired fixing effect.

Alternatively, in one embodiment of the present application, the second connection portion 107 may be formed by bending the fixing plate 104. For example, the second connection part 107 may be formed by bending the edge of the fixing plate 104, which is close to the separator 101, in a direction away from the battery module 100. In this way, the second connection portion 107 is integrally formed with the main body of the fixing plate 104, so that the connection performance can be enhanced.

Alternatively, in one embodiment of the present application, the separator 101 may be integrally formed with the fixing plates 104 at both ends of one row of the battery cells 20 of the adjacent two rows of the battery cells 20, so that only the fixing plates 104 need to be provided for the other row of the battery cells 20; alternatively, the separator 101 may be integrally formed with the fixing plates 104 corresponding to the adjacent two rows of the battery cells 20.

In some embodiments, the first connecting portion 105 is disposed at an end of the fixing plate 104 near the bottom wall of the case 11, and the first clamping portion 301 is disposed at an end of the first side 305 of the fixing plate far from the bottom wall of the case 11, where the first side 305 is a side perpendicular to the bottom wall of the case 11 and adjacent to the adjacent battery module 100.

The first connection portion 105 may be parallel to the bottom wall of the connected case 11. The first side 305 may extend in a vertical direction and be perpendicular to the first and second directions. One end of the first side 305 away from the bottom wall of the case 11 is provided with a first clamping portion 301, for example, the first side 305 may be folded in a direction away from the adjacent battery module 100 to form the first clamping portion 301. The first engaging portion 301 engages with the second engaging portion 401, and thereby connects adjacent battery modules 100 at one end away from the bottom wall of the case 11.

Through the above arrangement, the first connecting portion 105 is fixedly connected with the bottom wall of the case 11, and the adjacent battery modules are connected at positions away from the bottom wall of the case 11, so that the structural strength of the plurality of battery modules 100 is further ensured at positions away from the bottom wall.

In some embodiments, the first connecting portion 105 is disposed at an end of the fixing plate 104 near the bottom wall of the case 11, the first clamping portion 301 is disposed at an end of the second side 306 of the fixing plate 104 near the adjacent battery module 100, and the second side 306 is a side far from the bottom wall of the case 11.

The second side 306 extends along the first direction and is perpendicular to the second direction, and one end of the second side 306, which is close to the adjacent battery module 100, is provided with a first clamping portion 301. Alternatively, in an embodiment, the second edge 306 may be folded toward the bottom wall of the case 11 to form the first clamping portion 301. The first engaging portion 301 engages with the second engaging portion 401, and thereby connects adjacent battery modules 100 at one end away from the bottom wall of the case 11. In this way, the structural strength of the plurality of battery modules 100 is improved.

It should be understood that, in the embodiments of the present application, relevant portions may be referred to each other, and will not be described in detail for brevity.

An embodiment of the present application also provides a powered device that may include the battery 10 of the previous embodiment. Alternatively, the electric device may be the vehicle 1, the ship, the spacecraft, or the like, but the embodiment of the present application is not limited thereto.

Having described the battery 10 and the powered device of the embodiments of the present application, the method and the apparatus for preparing a battery of the embodiments of the present application will be described below, wherein the foregoing embodiments may be referred to for a portion that is not described in detail.

Fig. 11 shows a schematic flow chart of a method 300 of preparing a battery according to one embodiment of the present application. As shown in fig. 11, the method 300 may include:

310, providing a box 11;

320, providing a plurality of battery modules 100, wherein the plurality of battery modules 100 are arranged along a first direction, the end parts of the battery modules 100 in a second direction are provided with a fixing structure 102, the second direction is perpendicular to the first direction, and the fixing structure 102 is provided with a first clamping part 301;

330, providing a connector 400, wherein the connector 400 is provided with a second clamping part 401;

340, a plurality of battery modules 100 are accommodated in the case 11, the battery modules 100 are fixed to the case 11 by the fixing structure 102, and the second engaging portion 401 is engaged with the first engaging portion 301 to connect adjacent battery modules 100 among the plurality of battery modules 100 in the first direction.

Fig. 12 shows a schematic block diagram of an apparatus 600 for preparing a battery according to one embodiment of the present application. As shown in fig. 12, an apparatus 600 for preparing a battery may include: a module 610 and a mounting module 620 are provided.

A module 610 is provided for providing a plurality of battery molds 100, a case 11, and a connection member 400. The plurality of battery modules 100 are arranged along a first direction, the end parts of the battery modules 100 in a second direction are provided with fixing structures 102, the second direction is perpendicular to the first direction, the fixing structures 102 are provided with first clamping parts 301, and the connecting pieces 400 are provided with second clamping parts 401.

The mounting module 620 is configured to house the plurality of battery modules 100 in the case 11, fix the battery modules 100 to the case 11 through the fixing structure 102, and connect the second clamping portion 401 and the first clamping portion 301 in a clamping manner so as to connect adjacent battery modules 100 in the plurality of battery modules 100 along the first direction.

While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A battery, comprising:

a case (11);

a plurality of battery modules (100), wherein the plurality of battery modules (100) are arranged along a first direction and are accommodated in the box body (11), a fixing structure (102) is arranged at the end part of the battery modules (100) in a second direction, the second direction is perpendicular to the first direction, the fixing structure (102) is used for fixing the battery modules (100) to the box body (11), and a first clamping part (301) is arranged on the fixing structure (102);

The connecting piece (400), connecting piece (400) are provided with second joint portion (401), second joint portion (401) with first joint portion (301) joint, in order to connect adjacent battery module (100) in a plurality of battery modules (100) along first direction.

2. The battery according to claim 1, wherein the first clamping portion (301) is a clamping groove, and the second clamping portion (401) is a buckle, and the buckle is used for clamping into the clamping groove.

3. The battery according to claim 2, wherein the fixing structure (102) includes a turnover part (1021), and the turnover part (1021) is turned to form the clamping groove.

4. The battery of claim 2, wherein the slot includes a limit hole (3011) and the catch includes a protrusion (4011), the protrusion (4011) being configured to snap into the limit hole (3011) to limit movement of the catch within the slot.

5. The battery according to any one of claims 1 to 4, wherein the connecting member (400) is a U-shaped connecting member, and both ends of the U-shaped connecting member in the first direction are respectively provided with the second clamping portions (401) for respectively connecting the fixing structures (102) of the adjacent battery modules (100) of the plurality of battery modules (100).

6. The battery according to any one of claims 1 to 4, wherein the connection member (400) is an elastic connection member.

7. The battery according to any one of claims 1 to 4, wherein the battery module (100) includes:

n rows of battery cells (20), each row of battery cells (20) of the N rows of battery cells (20) comprising a plurality of battery cells (20) arranged along the second direction, the N rows of battery cells (20) arranged along the first direction, N being an integer greater than 1;

the N-1 separation plates (101), the separation plates (101) extend along the second direction and are arranged between two adjacent rows of battery cells (20), and the separation plates (101) are fixedly connected with each battery cell (20) in the two rows of battery cells (20); wherein, the liquid crystal display device comprises a liquid crystal display device,

the end of the partition board (101) in the second direction is provided with the fixing structure (102), and the partition board (101) is fixed to the box body (11) through the fixing structure (102).

8. The battery according to claim 7, wherein the fixing structure (102) includes a fixing plate (104), the fixing plate (104) is fixedly connected with the end portion of the separator (101) and is fixedly connected with a battery cell (20) located at the end portion of the separator (101), and the first clamping portion (301) is disposed on the fixing plate (104).

9. The battery according to claim 8, wherein the fixing plate (104) includes a first connection portion (105), the first connection portion (105) is used for connecting the case (11), and the first clamping portion (301) is disposed at an end of the fixing plate (104) away from the first connection portion (105).

10. The battery according to claim 9, wherein the first connecting portion (105) is provided at an end of the fixing plate (104) close to the bottom wall of the case (11), the first clamping portion (301) is provided at an end of a first side of the fixing plate (104) away from the bottom wall of the case (11), the first side being a side perpendicular to the bottom wall of the case (11) and adjacent to an adjacent battery module (100).

11. The battery according to claim 9, wherein the first connecting portion (105) is provided at an end of the fixing plate (104) near the bottom wall of the case (11), the first clamping portion (301) is provided at an end of a second side of the fixing plate (104) near the adjacent battery module (100), the second side being a side away from the bottom wall of the case (11).

12. A powered device, comprising: a battery according to any one of claims 1 to 11, for providing electrical energy.