CN221262552U - Spacer, battery, power consumption device, and battery manufacturing apparatus - Google Patents

Abstract

The embodiment of the application relates to the technical field of batteries, and provides a spacer, a battery, an electric device and manufacturing equipment of the battery. The spacer is used for the battery, and the battery includes a plurality of battery single bodies that arrange along first direction, and the spacer sets up between adjacent battery single bodies, and the spacer includes: the frame body is coated on the end part of the heat insulating piece and is connected to the heat insulating piece. By the mode, the influence of thermal runaway of single battery cells on adjacent battery cells can be avoided, and the safety of the battery is improved.

Description

Spacer, battery, power consumption device, and battery manufacturing apparatus

Technical Field

The embodiment of the application relates to the technical field of batteries, in particular to a spacer, a battery, an electric device and manufacturing equipment of the battery.

Background

Lithium ion batteries have been widely used in recent years in power battery systems for electronic devices such as computers and mobile phones, and for new energy automobiles, because of their advantages such as high energy density, high power density, long life, and environmental protection.

When the battery cells are closely arranged to form a battery module or a battery pack, due to electrical connection and mechanical contact between the battery cells, extreme conditions such as overheating, exhaustion or ignition occur in a certain battery cell, heat discharged from the battery cell may affect adjacent battery cells, so that thermal runaway occurs in the adjacent battery cells, and a safety accident of the battery is caused. Therefore, how to avoid thermal diffusion between the battery cells and improve the safety of the battery is a current urgent problem to be solved.

Disclosure of utility model

In view of the above problems, embodiments of the present application provide a spacer, a battery, an electric device, and a manufacturing apparatus for a battery, which can prevent thermal diffusion between battery cells and improve the safety of the battery.

According to a first aspect of an embodiment of the present application, there is provided a spacer for a battery including a plurality of battery cells arranged in a first direction, the spacer being provided between adjacent ones of the battery cells, the spacer including: a heat insulating member; and the frame body is coated on the end part of the heat insulation piece and connected to the heat insulation piece.

According to the embodiment of the application, the frame body can absorb the assembly force when the battery cells are assembled into groups, and can also provide an expansion space for the battery cells so as to absorb the expansion stress in the charging and discharging processes of the battery cells; the end part of the heat insulation piece is covered by the frame body, so that the heat insulation effect of the part of the heat insulation piece which is not covered by the frame body on the battery cell is ensured; simultaneously, the frame body is connected with the heat insulating piece, so that the heat insulating piece is not easy to fall off from the frame body, the heat insulating effect is further ensured, the condition that adjacent battery monomers are influenced by thermal runaway of single battery monomers is avoided, and the safety of the battery is improved.

In some embodiments, the frame protrudes from a surface of the thermal shield in the first direction such that there is a gap between the battery cell and the thermal shield.

In the first direction, the thickness of the frame body is greater than that of the heat insulating piece, so that after the frame body is coated on the heat insulating piece, the frame body protrudes out of the first surface of the heat insulating piece, and after assembly force is applied to a plurality of battery cells in the assembly process, a gap still exists between the battery cells and the heat insulating piece. The gap can provide expansion space for the battery monomer when the battery monomer expands, so that the battery performance is ensured.

In some embodiments, the thermal shield comprises two first surfaces configured to be disposed toward the battery cell; the frame body comprises a first part, a second part and a third part, wherein the third part is connected with the first part and the second part, the first part is attached to one first surface of the heat insulation part, and the second part is attached to the other first surface of the heat insulation part.

The first part is attached to one first surface of the heat insulating part, the second part is attached to the other first surface of the heat insulating part, the third part is connected with the first part and the second part, displacement is not easy to occur between the heat insulating part and the frame body, the heat insulating part is firmly coated in the frame body, the heat insulating part is prevented from moving relative to the battery cell, and the heat insulating effect is guaranteed.

In some embodiments, a through hole is formed in the region of the heat insulating piece covered by the frame body; the frame body further comprises a reinforcing part, wherein the reinforcing part is positioned in the through hole and is respectively connected with the first part and the second part.

Because the reinforcing part is positioned in the through hole and the two ends of the reinforcing part are respectively connected with the first part and the second part, the through hole can limit the reinforcing part, thereby limiting the displacement between the heat insulating part and the frame body.

In some embodiments, the reinforcement is shaped to fit the through hole.

The shape of the reinforcing part is matched with the through hole, so that the connection strength between the heat insulating piece and the frame body can be enhanced.

In some embodiments, the frame further comprises a protection portion, wherein the protection portion is located at the bottom of the frame and is used for being attached to the bottom R angle of the battery cell.

Through set up the guard portion of laminating with the free bottom R angle of battery in framework bottom, can prevent that the adhesive of battery box bottom from overflowing to the free first lateral wall of battery from framework and the free bottom R angle between, avoid overflowing the influence of gluing to the thermal-insulated effect of spacer to and avoid the hindrance to spacer absorption battery free cyclic expansion's stress, ensured spacer's thermal-insulated and absorption stress's effect, guarantee the security of battery.

In some embodiments, a boss is provided on the first portion and/or the second portion.

The protruding portion protrudes out of the surface of the first portion and/or the second portion of the frame body, so that a gap between the heat insulation piece and the battery cell is further increased, a larger expansion space is provided for the battery cell, and battery performance is guaranteed. In addition, through the protruding portion that sets up on first portion and/or the second portion can absorb the assembly force when more battery monomer assemble into groups to and the expansion stress of battery monomer charge-discharge in-process, further avoid above-mentioned force to act on the heat insulating part and influence its thermal-insulated effect, avoid single battery monomer to take place thermal runaway and influence adjacent battery monomer, improve the security of battery.

In some embodiments, the boss is a hollow structure.

A cavity is formed between the protruding part of the hollow structure and the first part and/or the second part of the frame body, and the cavity provides a deformation space for the protruding part, so that the assembly force when more battery cells are assembled into a group and the expansion stress in the charging and discharging process of the battery cells can be effectively absorbed.

In some embodiments, the material of the protruding portion includes rubber, polyethylene, or silicone.

The bulge made of soft materials is arranged, so that the assembly force of the battery cells in assembly can be absorbed well, and the expansion stress of the battery cells in the charging and discharging processes can be absorbed well.

In some embodiments, the number of bosses is a plurality.

The plurality of protruding parts are arranged, so that the absorption effect of the spacing device on assembly force and expansion stress can be enhanced, and the safety of the battery is improved.

In some embodiments, the thermal insulation member and the frame are the same material.

Therefore, only one material is needed to manufacture the spacing device, and the spacing device is easy to realize. And the frame body and the heat insulating piece can be integrally formed when the same material is selected.

In some embodiments, the insulation and the frame are injection molded.

The heat insulating piece and the frame body are subjected to injection molding to obtain the spacing device with an integrated structure, so that the cost is reduced, and the processing is easy.

In some embodiments, the spacer further comprises an encapsulation film that encapsulates the insulation and the frame.

During processing, the heat insulation piece and the frame body can be wrapped by the wrapping film, and the vacuum is pumped, so that the heat insulation piece and the frame body are further fixed.

According to a second aspect of an embodiment of the present application, there is provided a battery including: a plurality of battery cells; and a spacer as described above, the spacer being disposed between adjacent ones of the battery cells.

In some embodiments, the spacer is connected to the adjacent battery cell by an adhesive.

The spacer is bonded with the battery cell through the adhesive, so that the spacer is not easy to move relative to the battery cell, and the thermal insulation effect and the force absorption effect of the spacer on the battery cell are ensured.

In some embodiments, the bottom of the spacer is flush with the bottom of an adjacent cell.

Because the bottom of the spacer is flush with the bottom of the adjacent battery cell, the spacer cannot move downwards under the action of self gravity, so that the spacer cannot move relative to the battery cell easily, and the heat insulation effect and the force absorption effect of the spacer on the battery cell are ensured.

In some embodiments, the battery further comprises a box body, a plurality of battery cells are arranged in the box body, and the bottoms of the battery cells are connected with the box body through an adhesive; the frame body further comprises a protection part, wherein the protection part is positioned at the bottom of the frame body and is used for being attached to the bottom R angle of the battery cell.

The bottom of the battery monomer is connected with the box body through an adhesive, so that the battery monomer is fixed on the box body; through set up the guard portion of laminating with the free bottom R angle of battery in framework bottom, can prevent that the adhesive of battery box bottom from overflowing to the free first lateral wall of battery from framework and the free bottom R angle between, avoid overflowing the influence of gluing to the thermal-insulated effect of spacer to and avoid the hindrance to spacer absorption battery free cyclic expansion's stress, ensured spacer's thermal-insulated and absorption stress's effect, guarantee the security of battery.

According to a third aspect of embodiments of the present application, there is provided an electrical device, wherein the electrical device comprises a battery as described above for providing electrical energy.

According to a fourth aspect of an embodiment of the present application, there is provided a method of manufacturing a battery, including: providing a plurality of battery cells; providing a spacing device, the spacing device comprising: the heat insulation piece and the frame body are coated on the end part of the heat insulation piece and are connected to the heat insulation piece; the plurality of battery cells are arranged along a first direction, and the spacing device is arranged between adjacent battery cells.

According to a fifth aspect of the embodiment of the present application, there is provided a manufacturing apparatus of a battery, including: a first providing device configured to provide a plurality of battery cells; a second providing device configured to provide a spacing device, the spacing device comprising: the heat insulation piece and the frame body are coated on the end part of the heat insulation piece and are connected to the heat insulation piece; and an assembling device configured to arrange a plurality of the battery cells in a first direction, and to dispose the spacing device between adjacent ones of the battery cells.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

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

FIG. 2 is an exploded side view schematic illustration of a battery provided in some embodiments of the application;

fig. 3 is a schematic view of the structure of the battery module of fig. 2;

Fig. 4 is an exploded view of a spacer provided between a plurality of battery cells according to some embodiments of the present application;

FIG. 5 is a schematic view of a spacer provided in some embodiments of the present application;

FIG. 6 is a schematic side view of a spacer arrangement provided between a plurality of battery cells according to some embodiments of the present application;

FIG. 7 is a schematic cross-sectional view of FIGS. 4 and 6;

FIG. 8 is a schematic cross-sectional view taken in the direction B-B of FIG. 5;

FIG. 9 is a schematic top view of a spacer provided in some embodiments of the present application;

fig. 10 is a schematic view of the bottom R-angle fit of the protective portion of the frame and the battery cell in the spacer according to some embodiments of the present application;

FIG. 11 is a schematic side view of a spacer provided in some embodiments of the present application;

FIG. 12 is a schematic view of the spacing device of FIG. 11 after the bosses have been flattened;

FIG. 13 is a schematic view of a spacer provided in some embodiments of the present application;

FIG. 14 is a schematic top view of a battery according to some embodiments of the present application with an upper cover removed;

Fig. 15 is a flow chart of a method for manufacturing a battery according to some embodiments of the present application;

fig. 16 is a schematic structural view of a manufacturing apparatus for a battery according to some embodiments of the present application.

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

Reference numerals:

1-vehicle, 2-battery, 3-controller, 4-motor, 5-box, 6-battery module; 7-battery cells; 8-spacing means; 9-an adhesive;

51-first box part, 52-second box part;

71-top wall, 72-first side wall, 73-second side wall;

81-heat insulation pieces, 811-through holes;

82-frame, 821-first portion, 822-second portion, 823-third portion, 824-reinforcement portion, 825-guard portion, 826-boss portion, 826 a-cavity;

8-equipment for preparing battery cells, 81-a first providing device, 82-a second providing device and 83-an assembling device;

S-the surface of the heat insulating piece, S1-the first surface;

X-first direction (thickness direction of the battery cell), length direction of the Y-battery cell, height direction of the Z-battery cell;

Gap between G-cell and insulation.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly described below with reference to the accompanying 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 of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying 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 of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present application should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present application belong.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated, nor for describing a particular order or primary or secondary relationship.

The term "and/or" is used herein to describe only one association relationship of associated objects, meaning that three relationships may exist. For example, "a and/or B" may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The term "plurality" as used herein refers to two or more (including two), and the term "plurality" refers to two or more (including two).

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Reference herein 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 skilled in the art will appreciate that the embodiments described herein may be combined with other embodiments.

Reference to a battery in accordance with an embodiment 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 body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

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 in the embodiment of the application. The battery cell may be in a cylindrical shape, a flat shape, a rectangular parallelepiped shape, or other shapes, which is not limited in this embodiment of the application. 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 in this embodiment.

The battery cell comprises a positive pole piece, a negative pole piece, electrolyte and a diaphragm, and is a basic structural unit for forming a battery module and a battery pack. Common cathode materials of lithium ion batteries include lithium cobaltate, lithium manganate, lithium nickelate, lithium iron phosphate, ternary materials (e.g., lithium nickel cobalt manganate), etc., common anode materials include carbon materials (e.g., graphite) and silicon-based materials, and common separator materials include polyolefin (Polyolefin) materials mainly of Polyethylene (PE) or polypropylene (PP). The battery cells are generally classified into three types according to the packaging method: cylindrical battery cells, prismatic battery cells, and pouch battery cells.

Multiple cells may be connected in series and/or parallel via electrode terminals for use in various applications. In some high power applications, such as electric vehicles, the battery applications include three levels: battery cell, battery module and battery package. The battery module is formed by electrically connecting a certain number of battery cells together and putting the same into one frame in order to protect the battery cells from external impact, heat, vibration, etc. The battery pack is the final state of the battery system incorporated in the automobile. Most of the current Battery packs are manufactured by assembling various control and protection systems such as a Battery management system (Battery MANAGEMENT SYSTEM, BMS), a thermal management unit, and the like on one or more Battery modules. With the development of technology, this level of battery modules may be omitted, i.e., the battery pack is formed directly from the battery cells. This improvement results in a significant reduction in the number of components while the gravimetric energy density, volumetric energy density of the battery system is improved. The battery referred to in the present application includes a battery module or a battery pack.

When the battery cells are closely arranged to form a battery module or a battery pack, due to electrical connection and mechanical contact between the battery cells, extreme conditions such as overheating, exhaustion or ignition occur in a certain battery cell, heat discharged from the battery cell may affect adjacent battery cells, so that thermal runaway occurs in the adjacent battery cells, and a safety accident of the battery is caused.

In order to improve the safety of the battery and avoid thermal diffusion between the battery monomers, a heat insulation piece can be arranged between the battery monomers, so that adjacent battery monomers cannot be influenced when the single battery monomers are in thermal runaway.

The inside of the heat insulating piece is of a micropore structure and has certain compressibility. In the assembly process of the battery module or the battery pack, a certain assembly force (also referred to as a pre-tightening force) is applied to the battery cells from both sides in the arrangement direction of the battery cells after the battery cells are sequentially arranged, thereby compressing the battery cells. In this process, the insulation will be compressed due to the compressibility of the insulation. The insulation of the heat insulating member depends on the microporous structure, and if the microporous structure inside the heat insulating member is extruded, the pores shrink or disappear, which affects the heat insulating effect of the heat insulating member.

In addition, in the process of charging and discharging the battery cell, lithium ions are inserted into the pole piece to cause the lattice parameter of the pole piece to change, so that the pole piece expands in the thickness direction, and the frequency of charging and discharging is accompanied with expansion and contraction, so that the whole battery cell expands in the thickness direction. The thickness direction is generally the direction in which a plurality of battery cells are arranged to constitute a battery module or a battery pack. Therefore, the expansion of the battery cells will generate stress in the arrangement direction. The heat insulating member between adjacent battery cells is also compressed when subjected to the stress, resulting in the problem that the microporous structure is compressed to affect the heat insulating effect of the heat insulating member.

In view of this, the inventors thought that by adding a frame body in addition to the heat insulator, the assembly force during the assembly and the stress of the expansion of the battery cell are absorbed by the frame body. But when the frame body is additionally arranged, the heat insulation effect of the heat insulation piece and the absorption effect of the frame body on assembly force and stress are required to be ensured simultaneously.

The embodiment of the application provides a spacing device, which is used for being arranged between adjacent battery cells, and comprises a heat insulation piece and a frame body, wherein the frame body is coated on the end part of the heat insulation piece and connected with the heat insulation piece. The frame body can absorb the assembly force of the battery cells when the battery cells are assembled into groups and the expansion stress of the battery cells in the charging and discharging processes, so that the influence of the force on the heat insulation effect of the heat insulation piece is avoided; an expansion space can be provided for the battery monomer, so that the battery performance is ensured; the end part of the heat insulating piece is coated with the frame body, so that the heat insulating effect of the part of the heat insulating piece which is not coated with the frame body on the battery cell is ensured; and meanwhile, the frame body is connected with the heat insulation piece, so that the heat insulation piece is not easy to fall off from the frame body, and the heat insulation effect is further ensured. Thereby avoiding the influence of thermal runaway of single battery monomer on adjacent battery monomer and improving the safety of the battery.

The spacer device described in the embodiment of the application is suitable for a battery and an electric device using the battery.

The electric device may be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, or 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. The embodiment of the application does not limit the electric device in particular.

For convenience of explanation, the following examples will be described taking an electric device as an example of a vehicle.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application. As shown in fig. 1, the interior of the vehicle 1 is provided with a battery 2, and the battery 2 refers to a single physical module including one or more battery cells 5 to provide higher voltage and capacity, and for example, the battery 2 referred to in the present application may include a battery module 6 or a battery pack, or the like. The battery 2 may be provided at the bottom or at the head or tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, for example, the battery 2 may serve as an operating power source of the vehicle 1. The vehicle 1 may further comprise a controller 3 and a motor 4, the controller 3 being arranged to control the battery 2 to power the motor 4, for example for operating power requirements during start-up, navigation and driving of the vehicle 1.

In some embodiments of the application, the battery 2 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.

Referring to fig. 2, fig. 2 is an exploded side view of a battery according to some embodiments of the present application.

As shown in fig. 2, the battery 2 includes a case 5 and a battery module 6, and the battery module 6 is accommodated in the case 5.

The case 5 is for accommodating the battery module 6, and the case 5 may have various structures. In some embodiments, the case 5 may include a first case portion 51 and a second case portion 52, the first case portion 51 and the second case portion 52 being overlapped with each other, the first case portion 51 and the second case portion 52 together defining an accommodating space for accommodating the battery module 6. The second case portion 52 may be a hollow structure having one end opened, the first case portion 51 may be a plate-like structure, and the first case portion 51 is covered on the opening side of the second case portion 52 to form the case 5 having the accommodation space; the first case portion 51 and the second case portion 52 may each have a hollow structure with one side opened, and the opening side of the first case portion 51 is covered with the opening side of the second case portion 52 to form the case 5 having the accommodation space. Of course, the first and second case parts 51 and 52 may be of various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In order to improve the sealing property after the first casing 51 and the second casing 52 are connected, a sealing member, such as a sealant, a gasket, or the like, may be provided between the first casing 51 and the second casing 52.

Assuming that the first housing portion 51 is covered on top of the second housing portion 52, the first housing portion 51 may also be referred to as an upper case cover, and the second housing portion 52 may also be referred to as a lower case.

In the battery 2, the number of battery cells 7 is plural. The plurality of battery cells 7 can be connected in series or in parallel, and the series-parallel connection refers to that the plurality of battery cells 7 are connected in series or in parallel. The plurality of battery cells 7 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 7 is accommodated in the box body 5; of course, a plurality of battery cells 7 may be connected in series or parallel or series-parallel to form the battery module 6, and then the plurality of battery modules 6 may be connected in series or parallel or series-parallel to form a whole and be accommodated in the case 5.

Fig. 3 is a schematic view of the structure of the battery module in fig. 2. As shown in fig. 3, in some embodiments, the battery cells 7 are plural, and the plural battery cells 7 are first connected in series or parallel or series-parallel to form the battery module 6. The plurality of battery modules 6 are connected in series, in parallel or in series-parallel to form a whole, and are accommodated in a case.

Fig. 4 is an exploded view of a spacer provided between a plurality of battery cells according to some embodiments of the present application. Fig. 5 is a schematic structural view of a spacer according to some embodiments of the present application. Fig. 6 is a schematic side view of a spacer arrangement provided between a plurality of battery cells according to some embodiments of the present application.

Referring to fig. 4 to 6, an embodiment of the present application provides a spacer 8, the spacer 8 being used for a battery including a plurality of battery cells 7 arranged along a first direction, the spacer 8 being disposed between adjacent battery cells 7. The spacer 8 includes a heat insulating member 81 and a frame 82, and the frame 82 is wrapped around an end portion of the heat insulating member 81 and is connected to the heat insulating member 81.

In fig. 5, the heat insulator 81 is filled with oblique lines for clarity of illustration.

Referring to fig. 4, the battery cell 7 in the embodiment of the application includes 6 walls: a top wall 71, a bottom wall (not shown) and 4 side walls. The 4 side walls include two first side walls 72 disposed opposite each other and two second side walls 73 disposed opposite each other and connected between the two first side walls 72, and the area of the first side walls 72 is larger than that of the second side walls 73.

In the embodiment shown in fig. 4, the first direction refers to the X-axis direction, that is, the thickness direction of the battery cell 7 and the thickness direction of the pole piece in the battery cell 7. The first side wall 72 of each battery cell 7 is placed perpendicular to the first direction X, and the second side walls 73 of the battery cells 7 on the same side are aligned and then arranged along the first direction X. The Y-axis direction in the drawing is the longitudinal direction of the battery cell 7, and the Z-axis direction is the height direction of the battery cell 7.

The adjacent battery cells 7 refer to battery cells 7 adjacent in the first direction X. The second side walls 73 of the adjacent battery cells 7 on the same side are adjacent and come close to each other end to end. A spacer 8 is provided between each two adjacent battery cells 7.

The heat insulating member 81 may be made of mica, foamed heat insulating plastic, non-foamed heat insulating plastic (such as bakelite powder), foamed elastomer, surface layer glue-coated fiber felt or surface layer glue-coated aerogel felt, etc., and has a microporous structure inside, and has compressibility and high temperature resistance. The heat insulating member 81 may provide a good heat insulating effect for the adjacent battery cells 7, and may provide a heat insulating effect when thermal runaway occurs in the individual battery cells 7, preventing diffusion of the thermal runaway.

During the assembly of the battery module or the battery pack, a certain assembly force is applied to the battery cells 7 along the first direction X outside the battery cells 7, thereby compressing the battery cells 7. The assembly force is transmitted from the outside to the spacer 8 between the adjacent battery cells 7. Furthermore, during charging and discharging of the battery cell 7, the insertion of lithium ions into the pole piece will cause a change in the lattice parameter of the pole piece, causing the pole piece to expand, wherein the expansion of the pole piece mainly occurs in the first direction X, thereby causing the entire battery cell 7 to expand in the first direction X. The expansion of the cells 7 will create a stress in this first direction X, which stress is applied to the spacing means 8 between adjacent cells 7. Accordingly, a frame 82 is provided in the spacer 8 for absorbing the fitting force and stress. The frame 82 may be made of the same material as the heat insulator 81 or a different material.

The end portions of the heat insulating member 81 mean one or both ends of the heat insulating member 81 in the Y-axis direction, or one or both ends in the Z-axis direction.

The housing 82 may be provided with a housing chamber, and the end of the heat insulator 81 may be disposed in the housing chamber, so that the housing 82 covers the end of the heat insulator 81. The size of the part of the heat insulating member 81 not covered by the frame 82 is larger than the size of the end covered by the frame 82, that is, most of the surface of the heat insulating member 81 is exposed outside the frame 82, and the surface of the heat insulating member 81 is substantially aligned with the first side wall 72 of the battery cell 7, so that the heat of the adjacent battery cell 7 can be well blocked.

"Coupled" means that the frame 82 and the heat insulator 81 are fixed and do not move relative to each other. After the spacer 8 and the plurality of battery cells 7 are assembled, the spacer 8 does not move between adjacent battery cells 7, and if the heat insulating member 81 can move relative to the frame 82 and even fall off from the frame 82, the heat insulating member 81 can displace relative to the battery cells 7, so that the heat insulating member 81 deviates from the battery cells 7, and the heat insulating effect is affected.

According to the embodiment of the application, the frame 82 can absorb the assembly force of the battery cells 7 when being assembled into groups, and can also provide expansion space for the battery cells 7, so that the expansion stress of the battery cells 7 in the charging and discharging processes is absorbed; by coating the frame 82 on the end of the heat insulator 81, the heat insulating effect of the part of the heat insulator 81 not coated by the frame 82 on the battery cell 7 is ensured; simultaneously, the frame 82 is connected with the heat insulating piece 81, so that the heat insulating piece 81 is not easy to fall off from the frame 82, the heat insulating effect is further ensured, the influence of thermal runaway of single battery cells 7 on adjacent battery cells 7 is avoided, and the safety of the battery is improved.

Fig. 7 is a schematic cross-sectional view of fig. 4 and 6, and fig. 7 (a) is a schematic cross-sectional view of fig. 6 in the direction C-C, and (b) is a schematic cross-sectional view of fig. 4 in the direction A-A. The dimensional proportions of the battery cells 7 and the spacing means 8 are adjusted for clarity of illustration.

As shown in fig. 7, the heat insulator 81 includes two first surfaces S1, and the first surfaces S1 are configured to be disposed toward the battery cell 7. The frame 82 protrudes from the first surface S1 of the heat insulator 81 along the first direction X so that a gap G is provided between the battery cell 7 and the heat insulator 81.

The heat insulating member 81 is generally provided in a rectangular parallelepiped shape, particularly a thin rectangular parallelepiped shape. The rectangular parallelepiped-shaped heat insulating member 81 includes two pairs of surfaces disposed opposite to each other, wherein the area of one pair of surfaces is larger than the area of the other pair of surfaces. The "first surface" refers to a surface of the heat insulator 81 having a larger area. "toward the battery cell 7" means that the first surface S1 is parallel to the first sidewall 72 of the battery cell 7.

In the first direction X, the thickness of the frame 82 is greater than the thickness of the heat insulator 81, so that after the frame 82 is coated on the heat insulator 81, the frame 82 protrudes from the first surface S1 of the heat insulator 81, and after an assembly force is applied to the plurality of battery cells 7 during the assembly process, a gap G still exists between the battery cells 7 and the heat insulator 81. The gap G can provide an expansion space for the battery cell 7 when the battery cell 7 expands, so as to ensure the performance of the battery 2.

Please continue to refer to fig. 5. The heat insulator 81 includes two first surfaces S1 (only one of the first surfaces S1 is shown in fig. 5), and the first surfaces S1 are configured to be disposed toward the battery cell 7. The frame 82 includes a first portion 821, a second portion 822, and a third portion 823, the third portion 823 connecting the first portion 821 and the second portion 822, the first portion 821 being attached to one first surface S1 of the heat insulator 81, and the second portion 822 being attached to the other first surface S1 of the heat insulator 81.

The first portion 821, the second portion 822, and the third portion 823 may be integrally formed therebetween, thereby being integrally connected. The third portion 823 may also be connected to the first portion 821 and the second portion 822, respectively, by welding, gluing, or screwing, etc.

By "conforming" is meant that there is substantially no gap between the first portion 821 and the insulation 81 or the second portion 822 and the insulation 81.

The first portion 821 is attached to one first surface S1 of the heat insulating member 81, the second portion 822 is attached to the other first surface S1 of the heat insulating member 81, the third portion 823 is connected with the first portion 821 and the second portion 822, displacement is not easy to occur between the heat insulating member 81 and the frame 82, the heat insulating member 81 is firmly coated in the frame 82, movement of the heat insulating member 81 relative to the battery cell 7 is avoided, and heat insulating effect is guaranteed.

Fig. 8 is a schematic sectional view in the direction B-B in fig. 5. Fig. 9 is a schematic top view of a spacer provided in some embodiments of the present application. As shown in fig. 8 and 9, a through hole 811 is formed in the heat insulator 81 in a region covered with the frame 82. The frame 82 further includes a reinforcing portion 824, and the reinforcing portion 824 is positioned in the through hole 811 and connects the first portion 821 and the second portion 822, respectively.

The region of the heat insulator 81 covered by the frame 82 is the end of the heat insulator 81 as described above. The axial direction of the through hole 811 opened in this region is parallel to the first direction X, i.e., the thickness direction of the heat insulator 81).

Since the reinforcement portion 824 is located in the through hole 811 and both ends thereof are connected to the first portion 821 and the second portion 822, respectively, the through hole 811 can limit the reinforcement portion 824, thereby limiting displacement between the heat insulator 81 and the frame 82.

In some embodiments, the shape of the reinforcement 824 is adapted to the through hole 811.

The shape of the reinforcement 824 is adapted to the through hole 811, so that the connection strength between the heat insulator 81 and the frame 82 can be enhanced.

By "fitting" is meant that the shape of the reinforcement 824 is the same or substantially the same as the through hole 811, e.g., as shown in fig. 8 and 9, the through hole 811 is a cylindrical hole and the reinforcement 824 is correspondingly cylindrical in shape. If the through hole 811 is a truncated cone hole, the reinforcing portion 824 has a truncated cone shape. It will be appreciated that the through hole 811 and the reinforcement 824 may also be other shapes, as long as the shapes of the two are adapted.

Further, the reinforcement 824 and the through hole 811 may be a clearance fit, a transition fit, or an interference fit. When the reinforcement 824 and the through hole 811 are a transition fit or an interference fit, the connection strength between the heat insulator 81 and the frame 82 can be enhanced.

If the frame 82 is injection molded on the heat insulator 81, the reinforcement portion 824 may be formed by: a hole 811 is formed in the heat insulator 81, and plastic penetrates the hole 811 and fills the hole 811 when the frame 82 is injection molded, and the plastic located in the hole 811 forms a reinforcing portion 824 having the same shape as the hole 811. This processing can make the reinforcement 824 and the frame 82 have an integral structure, and enhance the connection strength between the reinforcement 824 and the first portion 821 and the second portion 822 of the frame 82; the reinforcing portion 824 fills the entire through hole 811, thereby enhancing the strength of the connection between the frame 82 and the heat insulator 81, and securing the heat insulator 81 to the frame 82. This processing method is particularly suitable for the case that the combination property of the material of the heat insulating member 81 and the material of the frame 82 is poor, and separation of the heat insulating member 81 and the frame 82 in this case can be avoided.

The through holes 811 and the reinforcing portions 824 are generally provided in one-to-one correspondence, that is, the through holes 811 and the reinforcing portions 824 are the same in number and in positions. A plurality of through holes 811 may be provided at each end of the heat insulator 81, and a reinforcing portion 824 may be provided at a corresponding position of the frame 82. A row of through holes 811 may be provided along the Z-axis direction, or through holes 811 may be provided in a matrix form along the Z-axis direction and the Y-axis direction, respectively.

It will be appreciated that in the case where the material of the heat insulating member 81 and the material of the frame 82 have good bonding performance, the structure of the through hole 811 and the reinforcing portion 824 may not be provided, so that a larger area of the heat insulating member 81 is ensured, and the heat insulating effect of the heat insulating member 81 is improved.

Fig. 10 is a schematic view of the bottom R-angle fit of the protective portion of the frame and the battery cell in the spacer according to some embodiments of the present application. As shown in the drawing, the frame 82 further includes a protecting portion 825, and the protecting portion 825 is located at the bottom of the frame 82 and is used for fitting the bottom R corner of the battery cell 7.

The bottom of the frame 82 is the bottom of the frame 82 in the Z-axis direction, and the bottom of the battery cell 7 is also the bottom of the battery cell 7 in the Z-axis direction.

The bottom R angle of the battery cell 7 refers to the chamfer between the bottom wall and the side wall of the battery cell 7. In the embodiment of the present application, since the spacer 8 is disposed between the first side walls 72 of the adjacent battery cells 7, the bottom R angle of the battery cells 7 herein refers to the chamfer between the bottom wall and the first side walls 72 of the battery cells 7. By "conforming" is meant that there is substantially no gap between the guard 825 and the bottom R-angle of the cell 7.

Referring to fig. 2 and 10, the connection between the assembled battery cells 7 and the bottom of the battery case 5 includes gluing, for example, by applying an adhesive (also referred to as glue) to the bottom of the second case of the battery 2, and placing the assembled battery cells 7 on the bottom of the second case. Of course, the adhesive may be applied to the bottom of the battery cell 7, or to both the bottom of the battery cell 7 and the bottom of the second case. If the bottom of the frame 82 is not attached to the bottom R corner of the battery cell 7, the adhesive at the bottom of the case 5 of the battery 2 may overflow to the first sidewall 72 along the gap between the frame 82 and the bottom R corner of the battery cell 7. Since the glue is typically organic, the glue spilling onto the first side wall 72 will affect the heat insulation of the spacer 8 and will also hinder the stress absorption of the spacer 8 to the cyclic expansion of the battery cells 7.

Through set up the guard portion 825 of laminating with the free bottom R angle of battery 7 in framework 82 bottom, can prevent that the adhesive of battery 2 box 5 bottom from overflowing to the free first side wall 72 of battery 7 from the space between framework 82 and the free bottom R angle of battery 7, avoid the influence of glue overflow to the thermal-insulated effect of spacer 8 to and avoid the hindrance to the stress that spacer 8 absorbed the free 7 cyclic expansion of battery, ensured spacer 8's thermal-insulated and absorption stress's effect, guaranteed battery 2's security.

In addition, the design can avoid arranging a separate glue blocking device, such as a glue blocking strip, thereby reducing the cost and simplifying the assembly process.

It should be understood by those skilled in the art that, in the case where the connection between the assembled battery cells 7 and the bottom of the case 5 of the battery 2 is a non-adhesive connection, the frame 82 may be provided with a protection portion 825 attached to the bottom R of the battery cell 7, which is not limited by the present application. Of course, the protection portion 825 may not be provided in this case, so that the cost is saved and the processing technique is simplified.

With continued reference to fig. 5, in some embodiments, a boss 826 is provided on the first portion 821 and/or the second portion 822.

The protruding portion 826 protrudes from the surface of the first portion 821 and/or the second portion 822 of the frame 82, so that the gap between the heat insulating member 81 and the battery cell 7 is further increased, a larger expansion space is provided for the battery cell 7, and the performance of the battery 2 is ensured. In addition, the protruding portion 826 arranged on the first portion 821 and/or the second portion 822 can absorb more assembling force when the battery cells 7 are assembled into a group and expansion stress in the charging and discharging processes of the battery cells 7, so that the effect that the heat insulation member 81 is influenced by the force is further avoided, the adjacent battery cells 7 are prevented from being influenced by thermal runaway of the single battery cell 7, and the safety of the battery 2 is improved.

In some embodiments, the number of bosses 826 may be multiple.

Providing a plurality of protruding portions 826 can enhance the absorption effect of the spacer 8 on the assembly force and the expansion stress, and improve the safety of the battery 2.

The number of the protruding portions 826 provided on the first portions 821 at the both ends may be the same or different; the number of the protruding portions 826 provided on the second portions 822 at the both ends may be the same or different. A row of the projections 826 may be provided along the Z-axis direction, or the projections 826 may be provided in a matrix form along the Z-axis direction and the Y-axis direction, respectively. The plurality of bosses 826 may be spaced or have a certain spacing therebetween.

As shown in fig. 5, the cross-sectional shape of a single boss 826 is arcuate, and a plurality of consecutive, non-spaced bosses 826 form a wave-like structure. It is understood that the cross-sectional shape of the single boss 826 may also be semi-circular, trapezoidal, triangular, diamond-shaped, etc.

Fig. 11 is a schematic side view of a spacer according to some embodiments of the present application. In some embodiments, the boss 826 is a hollow structure.

A cavity 826a is formed between the protruding portion 826 of the hollow structure and the first portion 821 and/or the second portion 822 of the frame 82, and the cavity 826a provides a deformation space for the protruding portion 826, so as to effectively absorb more assembling force when the battery cells 7 are assembled into a group, and expansion stress during charging and discharging of the battery cells 7.

Fig. 12 is a schematic view of the spacer of fig. 11 after the bosses have been flattened. After compression, a certain space is maintained between the frame 82 and the battery cell 7 to absorb cyclic expansion stress.

Those skilled in the art will appreciate that in some embodiments, the material of the boss 826 comprises rubber, polyethylene, or silicone. By providing the boss 826 made of a soft material, the assembling force when the battery cells 7 are assembled into a group and the expansion stress during the charge and discharge of the battery cells 7 can be absorbed well.

In some embodiments, on the basis that the material of the protruding portion 826 adopts rubber, polyethylene or silica gel, the protruding portion 826 can be set to be a solid structure, so that a hollow structure is not required to be processed, and the processing is convenient.

Fig. 13 is a schematic structural view of a spacer according to some embodiments of the present application. As shown in fig. 13, in some embodiments, the difference from the embodiments described in the foregoing fig. 4 to 12 is that in the present embodiment, the frame 82 is provided at the end in the short side direction of the heat insulating member 81.

As shown in fig. 13, the entire surface of the frame 82 facing the first side wall of the battery cell is provided with a protrusion 826, and there is no area on the frame 82 available for providing a guard portion that engages with the bottom R corner of the battery cell. Such an embodiment is therefore particularly suitable for batteries in which the battery case and the battery cells are not connected by adhesive. Since the bottom of the battery case is not coated with the adhesive, when the spacer 8 is applied to such a battery, the frame 82 can be disposed at the end of the heat insulator 81 in the short side direction without providing a protective portion attached to the bottom R of the battery cell on the frame 82, and the entire surface of the frame 82 facing the first side wall of the battery cell can be covered with the protruding portion 826.

In the embodiment shown in fig. 13, the frame 82 is disposed along the long side direction of the heat insulating member 81, and compared with the embodiment in which the frame 82 is disposed along the short side direction of the heat insulating member 81, the size of the frame 82 is longer, so that the number of the protruding portions 826 disposed on the frame 82 can be larger, the assembly force when the battery cells are assembled into a group and the expansion stress in the charging and discharging process of the battery cells are dispersed by the larger number of protruding portions 826, so that the single protruding portion 826 is not easy to deform, and the protruding portion 826 is easy to collapse or break when the assembly force or the expansion stress is avoided, thereby affecting the force absorbing effect of the spacer 8.

It will be understood by those skilled in the art that in other embodiments, the frame 82 may be provided at both the long-side end and the short-side end of the heat insulator 81, or the frame 82 may be provided only at one long-side end of the heat insulator 81, or the frame 82 may be provided only at one short-side end of the heat insulator 81, or a combination of the above embodiments.

In some embodiments, the thermal insulation 81 and the frame 82 are the same material.

Since the frame 82 needs to have a force absorbing performance, the same material may be used for the frame 82 when the heat insulating material 81 is made of a heat insulating plastic material. Thus, only one material is needed to manufacture the spacing device 8, and the implementation is easy. And the frame 82 and the heat insulator 81 may be integrally formed when the same material is selected.

In some embodiments, the insulation 81 and the frame 82 are injection molded.

The heat insulating piece 81 and the frame 82 are injection molded to obtain the spacing device 8 with an integrated structure, so that the cost is reduced, and the processing is easy.

Of course, the heat insulator 81 may be manufactured first, and the frame 82 may be injection-molded on the heat insulator 81. When the material of the frame 82 is similar to the material of the heat insulator 81 and has a good bonding force, the frame 82 may be directly formed at the end of the heat insulator 81 by injection molding. The frame 82 is injection-molded on the heat insulating member 81, so that the heat insulating member 81 and the frame 82 are not necessarily limited to be made of the same material, the connection strength of the heat insulating member 81 and the frame 82 can be ensured, and the processing is easy.

In some embodiments, the spacer 8 further comprises an encapsulation film that encapsulates the insulation 81 and the frame 82.

During processing, the heat insulating member 81 and the frame 82 can be wrapped by the wrapping film, and vacuum is pumped, so that further fixation of the heat insulating member 81 and the frame 82 is realized.

The heat insulation member 81 and the frame 82 can be further improved in connection strength by wrapping the heat insulation member 81 and the frame 82 by the wrapping film, the heat insulation member 81 is prevented from moving relative to the frame 82, and the heat insulation effect of the heat insulation member 81 on the adjacent battery cells 7 is guaranteed.

With continued reference to fig. 2, the embodiment of the present application further provides a battery 2 including a plurality of battery cells 7 and the spacer 8 according to the above embodiment, where the spacer 8 is disposed between adjacent battery cells 7.

In some embodiments, the spacer 8 is connected to the adjacent battery cells 7 by an adhesive. The spacer 8 is adhered to the battery cell 7 through the adhesive, so that the spacer 8 is not easy to move relative to the battery cell 7, and the heat insulation effect and the force absorption effect of the spacer 8 on the battery cell 7 are ensured.

With continued reference to fig. 2, in some embodiments, the bottom of the spacer 8 is flush with the bottom of an adjacent cell 7. Because the bottom of the spacing device 8 is flush with the bottom of the adjacent battery cell 7, the spacing device 8 cannot move downwards under the action of self gravity, so that the spacing device 8 cannot move relative to the battery cell 7 easily, and the heat insulation effect and the force absorption effect of the spacing device 8 on the battery cell 7 are ensured.

Fig. 14 is a schematic top view of a battery according to some embodiments of the present application with the upper cover removed. As shown in fig. 14 and with continued reference to fig. 2, in some embodiments, the battery includes a case 5, a plurality of battery cells 7 are disposed in the case 5, and the bottoms of the battery cells 7 are connected to the case 5 by an adhesive 9. The frame 82 further includes a protecting portion 825, where the protecting portion 825 is located at the bottom of the frame 82 and is used for fitting the bottom R angle of the battery cell 7.

The bottom of the battery monomer 7 is connected with the box body 5 through an adhesive, so that the battery monomer 7 is fixed on the box body 5; through set up the guard portion 825 of laminating with the free bottom R angle of battery 7 in framework 82 bottom, can prevent that the adhesive of battery 2 box 5 bottom from overflowing to the free first side wall 72 of battery 7 from the space between framework 82 and the free bottom R angle of battery 7, avoid the influence of glue overflow to the thermal-insulated effect of spacer 8 to and avoid the hindrance to the stress that spacer 8 absorbed the free 7 cyclic expansion of battery, ensured spacer 8's thermal-insulated and absorption stress's effect, guaranteed battery 2's security.

The specific structure of the protecting portion 825 may refer to the foregoing description of the embodiment of the spacing device 8, and will not be repeated herein.

Referring to fig. 15, fig. 15 is a flowchart of a method for manufacturing a battery according to some embodiments of the present application, where the method includes the following steps:

step 151, providing a plurality of battery cells;

Step 152, providing a spacer device, wherein the spacer device comprises a heat insulating piece and a frame body, and the frame body is coated on the end part of the heat insulating piece and connected to the heat insulating piece;

In step 153, a plurality of battery cells are arranged along a first direction, and a spacer is disposed between adjacent battery cells.

The relevant structure of the battery manufactured by the manufacturing method of the present embodiment may refer to the relevant content of the battery described in the foregoing embodiments corresponding to fig. 1 to 14, and will not be described herein.

Referring to fig. 16, fig. 16 is a schematic structural diagram of an apparatus for manufacturing a battery according to some embodiments of the present application, and the apparatus 10 for manufacturing a battery includes: a first providing device 11, a second providing device 12 and an assembling device 13.

The first supply device 11 is configured to supply a plurality of battery cells;

The second providing means 12 is configured to provide spacing means comprising: the frame body is coated on the end part of the heat insulating piece and is connected to the heat insulating piece;

The assembly device 13 is configured to arrange a plurality of battery cells in a first direction with a spacer disposed between adjacent battery cells.

The relevant structure of the battery manufactured by the manufacturing apparatus of this embodiment may refer to the relevant content of the battery described in the foregoing embodiments corresponding to fig. 1 to 14, and will not be described herein again.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. 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 (19)

1. Spacer for a battery (2), the battery (2) comprising a plurality of cells (7) arranged along a first direction (X), the spacer (8) being arranged between adjacent cells (7), characterized in that the spacer (8) comprises:

A heat insulating member (81);

And a frame (82), wherein the frame (82) is coated on the end part of the heat insulation member (81) and is connected to the heat insulation member (81).

2. Spacer device according to claim 1, wherein in the first direction (X) the frame (82) protrudes from the surface (S) of the insulating element (81) so that there is a gap (G) between the battery cell (7) and the insulating element (81).

3. The spacing device according to claim 1, characterized in that the thermal insulation (81) comprises two first surfaces (S ₁), the first surfaces (S ₁) being configured to be arranged towards the battery cells (7);

The frame body (82) comprises a first portion (821), a second portion (822) and a third portion (823), the third portion (823) is connected with the first portion (821) and the second portion (822), the first portion (821) is attached to one first surface (S ₁) of the heat insulation piece (81), and the second portion (822) is attached to the other first surface (S ₁) of the heat insulation piece (81).

4. A spacer according to claim 3, wherein a through hole (811) is provided in the region of the insulating member (81) covered by the frame (82);

The frame (82) further comprises a reinforcing part (824), wherein the reinforcing part (824) is positioned in the through hole (811) and is respectively connected with the first part (821) and the second part (822).

5. A spacer device according to claim 4, wherein the reinforcement (824) is shaped to fit the through hole (811).

6. The spacer of any one of claims 1 to 5,

The frame body (82) further comprises a protection part (825), and the protection part (825) is positioned at the bottom of the frame body (82) and is used for being attached to the bottom R angle of the battery unit (7).

7. A spacing device according to claim 3, characterized in that a protrusion (826) is provided on the first part (821) and/or the second part (822).

8. The spacer of claim 7, wherein the boss (826) is hollow in structure.

9. A spacer as claimed in claim 7, characterised in that the material of the boss (826) comprises rubber, polyethylene or silicone.

10. The spacer of claim 7, wherein the number of bosses (826) is a plurality.

11. Spacer device according to claim 1, wherein the heat insulating element (81) and the frame (82) are of the same material.

12. A spacer as claimed in any one of claims 1 to 3 and 7 to 10, characterised in that the insulating element (81) and the frame (82) are injection moulded.

13. The spacer device according to claim 1, wherein the spacer device (8) further comprises an envelope film, which envelope film encloses the heat shield (81) and the frame (82).

14. A battery, comprising:

A plurality of battery cells (7); and

Spacer (8) according to any one of claims 1 to 13, the spacer (8) being arranged between adjacent cells (7).

15. A battery according to claim 14, characterized in that the spacing means (8) are connected to the adjacent battery cells (7) by means of an adhesive (9).

16. A battery according to claim 14, characterized in that the bottom of the spacer means (8) is flush with the bottom of the adjacent battery cell (7).

17. The battery according to any one of claims 14 to 16, wherein the battery (2) further comprises a case (5), a plurality of battery cells (7) are disposed in the case (5), and the bottoms of the battery cells (7) are connected with the case (5) through an adhesive (9);

The frame body (82) further comprises a protection part (825), and the protection part (825) is positioned at the bottom of the frame body (82) and is used for being attached to the bottom R angle of the battery unit (7).

18. An electrical consumer, characterized in that the electrical consumer comprises a battery (2) according to any one of claims 14-17, the battery (2) being adapted to provide electrical energy.

19. A manufacturing apparatus of a battery, characterized by comprising:

A first providing device (11) configured to provide a plurality of battery cells;

-second providing means (12) configured to provide spacing means, the spacing means (8) comprising:

The heat-insulating piece is arranged on the inner wall of the heat-insulating piece,

The frame body is coated on the end part of the heat insulation piece and connected to the heat insulation piece;

And an assembling device (13) configured to arrange a plurality of the battery cells in a first direction, and to dispose the spacing device between adjacent battery cells.