CN216720225U - Current collecting assembly, battery and electric device - Google Patents

Abstract

The application provides a subassembly, battery and electric installation converge relates to the battery field. The bus assembly comprises a bus piece and an insulating piece. The bus bar is used for connecting a plurality of battery cells in series or in parallel. The insulator is used for carrying the bus bar along a first direction. The insulating part comprises a body and a mounting structure, wherein the mounting structure comprises two mounting parts, and the two mounting parts are arranged on the surface of the body in a protruding mode along a first direction. The two mounting portions are arranged oppositely to form a mounting space for mounting the bus bar between the two mounting portions. The insulating part of the current converging assembly is provided with two installation parts, and the current converging part is installed in an installation space formed between the two installation parts, so that the insulating part and the current converging part are connected to form a whole, the relative positions of the insulating part and the current converging part are limited, a welding positioning tool is not required to be arranged to position the current converging part during subsequent welding, and the production efficiency is improved. The connecting mode connects the insulating piece and the bus piece, and the performance (such as structural strength) of the bus piece is not affected.

Description

Current collecting assembly, battery and electric device

Technical Field

The application relates to the field of batteries, in particular to a current collecting assembly, a battery and an electric device.

Background

Batteries are widely applied in the field of new energy resources, such as electric vehicles, new energy vehicles and the like, and the new energy vehicles and the electric vehicles become new development trends of the automobile industry. The battery is generally formed by connecting a plurality of battery cells in series or in parallel through a bus bar, and in order to avoid a short circuit phenomenon, an insulating member is required to be arranged to isolate the bus bar. However, the assembly process of the bus piece and the insulating piece is complex, and the assembly efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a subassembly, battery and electric installation converge, it can simplify the assembly of piece and insulating part converge, promotes assembly efficiency.

In a first aspect, an embodiment of the present application provides a bus bar assembly, which includes a bus bar and an insulating member, where the bus bar is used for connecting a plurality of battery cells in series or in parallel; the insulating part is used for bearing along first direction the piece that converges, the insulating part includes body and mounting structure, mounting structure includes two installations department, two installations departments are followed first direction protrusion set up in the surface of body, two installation departments are arranged relatively with form between two installations and be used for the installation space of piece that converges.

In the technical scheme, the two installation parts are arranged on the insulating part of the confluence assembly, and the confluence part is installed in the installation space formed between the two installation parts, so that the insulating part and the confluence part are connected to form a whole, the relative positions of the insulating part and the confluence part are limited, a welding and positioning tool is not needed to be arranged to position the confluence part during subsequent welding, the assembly of the confluence part and the insulating part is simplified, and the production efficiency is improved. In addition, adopt this kind of connected mode to connect insulating part and piece that converges, can not lead to the fact the influence to converging the performance (like structural strength) of piece, be favorable to guaranteeing the performance of battery, promote product quality.

As an optional technical solution of the embodiment of the present application, the bus bar assembly further includes a limiting structure, and in the first direction, the limiting structure is configured to prevent the bus bar piece from departing from the body and separating from the installation space.

In above-mentioned technical scheme, through setting up limit structure, will converge the flow spacing in installation space, prevent to converge flow and insulating part dislocation in the transportation, and then lead to follow-up welding bad.

As an optional technical solution of the embodiment of the present application, the limiting structure includes a convex portion disposed on the bus bar and a concave portion disposed on the mounting portion, and the convex portion is fitted to the concave portion.

In the technical scheme, the protruding portion is arranged on the bus piece, and the concave portion is arranged on the mounting portion, so that the protruding portion is matched with the concave portion, on one hand, the protruding portion is matched with the concave portion to achieve good limiting performance, and the limitation on the relative position of the bus piece and the mounting portion can be guaranteed. On the other hand, the convex part and the concave part are simple to fit and assemble and easy to realize, the assembly of the confluence piece and the insulating piece can be simplified, and the production efficiency is improved. Moreover, the convex part is formed on the confluence piece, and compared with the technical scheme that the concave part is directly formed on the confluence piece, the performance (such as structural strength) of the confluence piece is not reduced, so that the product quality is improved.

As an optional technical solution of the embodiment of the present application, the mounting portion is provided with a plurality of the concave portions, and the plurality of the concave portions are arranged at intervals along the first direction.

In the above-described aspect, by providing the plurality of recesses in the mounting portion along the first direction, a suitable recess can be selected for mounting when the bus bar is mounted, so that the adaptability of the structure is improved.

As an optional technical solution of the embodiment of the present application, the protruding portion is disposed on two sides of the bus bar along a second direction, and the second direction is a connecting line direction of the two mounting portions.

In the technical scheme, the protruding parts are arranged on the two sides of the bus piece along the second direction, so that the bus piece is matched with the mounting part conveniently, and the structure of the bus piece cannot be changed greatly.

As an optional technical solution of the embodiment of the present application, the limiting structure includes a concave portion provided to the bus bar and a convex portion provided to the mounting portion, and the convex portion is fitted to the concave portion.

In the technical scheme, the concave part is arranged on the bus piece, and the convex part is arranged on the mounting part, so that the convex part is matched with the concave part, on one hand, the convex part and the concave part are matched to have better limiting performance, and the limitation on the relative position of the bus piece and the mounting part can be ensured. On the other hand, the convex part and the concave part are simple to assemble in a matched mode, the realization is easy, the assembly of the confluence piece and the insulating piece can be simplified, and the production efficiency is improved.

As an optional technical solution of the embodiment of the present application, the bus bar includes an arch structure facing away from the body along the first direction, the concave portion is disposed on a surface of the arch structure facing away from the body along the first direction, and the convex portion abuts against the concave portion to limit the arch structure between the body and the convex portion.

In the above technical solution, by forming the arch structure on the bus bar, the performance (e.g. structural strength) of the bus bar is enhanced, and then the arch structure is provided with the concave portion, so that the performance of the bus bar after the concave portion is provided is not reduced compared with the performance of the bus bar before the arch structure is provided. Moreover, through the arrangement of the arch structure, the arch structure can be used as a fool-proof structure so as to avoid the installation error of the bus piece and the insulating piece.

As an optional technical scheme of the embodiment of the application, the two installation parts are matched and clamped with the bus piece.

In above-mentioned technical scheme, through two installation department centre gripping converging pieces, can not need to change the structure of converging piece and carry on spacingly to converging piece.

As an optional technical scheme of this application embodiment, the installation department is made by elastic material, and in the second direction, the distance between two installation departments is less than the length of piece that converges, the second direction is the line direction of two installation departments.

In above-mentioned technical scheme, when the piece card that converges is gone into the installation space, the installation department can take place deformation in order to produce the reaction force to the piece that converges, with the piece centre gripping that converges between two installation departments.

As an optional solution of the embodiment of the present application, the bus bar assembly includes a plurality of bus bars, the insulating member includes a plurality of the mounting structures, and the mounting structures correspond to the bus bars one to one.

In above-mentioned technical scheme, through setting up a plurality of mounting structure to spacing a plurality of busbar pieces, so that a plurality of busbar pieces will a plurality of battery monomer establish ties or parallelly connected.

In a second aspect, an embodiment of the present application further provides a battery, where the battery includes a plurality of battery cells and the above-mentioned bus bar assembly, and the bus bar assembly is connected in series or in parallel with the plurality of battery cells.

In a third aspect, an embodiment of the present application further provides an electric device, where the electric device includes the above battery, and the battery is used to provide electric energy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

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

fig. 2 is an exploded view of a battery provided in accordance with some embodiments of the present application;

FIG. 3 is a schematic structural view of a bus bar assembly according to some embodiments of the present disclosure;

FIG. 4 is a schematic front view of a bus bar assembly provided in accordance with some embodiments of the present disclosure;

FIG. 5 is a side view of a bus bar assembly according to some embodiments of the present disclosure;

FIG. 6 is a schematic front view of an insulator provided in accordance with some embodiments of the present application;

FIG. 7 is a cross-sectional view taken at the position C-C in FIG. 5;

FIG. 8 is a schematic bottom view of a bus bar provided by some embodiments of the present disclosure;

FIG. 9 is a side view schematic of a bus bar provided by some embodiments of the present application;

FIG. 10 is a schematic bottom view of a bus bar according to other embodiments of the present disclosure;

fig. 11 is a bottom view of a bus bar according to further embodiments of the present disclosure.

Icon: 100-a battery; 10-a box body; 11-a first part; 12-a second part; 20-a battery cell; 30-a bus assembly; 31-a bus bar; 312-arch structure; 32-an insulator; 321-a body; 322-a mounting portion; 323-accommodating grooves; 331-a recess; 332-a convex part; 200-a controller; 300-a motor; 1000-vehicle.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: there are three cases of A, A and B, and B. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two sets), "plural pieces" refers to two or more (including two pieces).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

The battery referred to in the embodiments of the present application refers to a single physical module including a plurality of 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, etc. Batteries generally include a case for enclosing a plurality of battery cells. The box can avoid liquid or other foreign matters to influence the charging or discharging of battery monomer.

The battery cell includes an electrode assembly including a positive electrode tab, a negative electrode tab, and a separator, and an electrolyte (e.g., an electrolyte). The battery cell mainly depends on metal ions to move between the positive pole piece and the negative pole piece to work. The diaphragm is arranged between the positive pole piece and the negative pole piece to insulate the positive pole piece and the negative pole piece and avoid short circuit.

The battery cell also comprises a shell and an end cover, wherein the shell is provided with an opening, and the end cover covers the opening to form a closed space isolated from the external space, and the closed space is used for accommodating an electrode assembly, electrolyte and other functional components.

At present, the application of the battery is more and more extensive from the development of market situation. The battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment and aerospace. As the field of application of batteries is continuously expanded, the market demand thereof is also continuously expanded.

The battery is generally formed by connecting a plurality of battery cells in series or in parallel through a bus bar, and in order to avoid a short circuit phenomenon, an insulating member is required to be arranged to isolate the bus bar. However, the assembly process of the bus piece and the insulating piece is complex, and the assembly efficiency is low.

The inventor finds that, in the prior art, when the bus bar and the insulating piece are assembled, a large amount of manpower and material resources are needed to position, install and weld the bus bar, and especially, the positioning of the bus bar and the insulating piece is troublesome, which results in low assembly efficiency.

Based on the consideration, the inventor designs a confluence assembly through intensive research, wherein two installation parts are arranged on an insulating part of the confluence assembly, and the confluence piece is installed in an installation space formed between the two installation parts, so that the insulating part and the confluence piece are connected to form a whole, the relative position of the insulating part and the confluence piece is limited, a welding and positioning tool is not needed to be arranged to position the confluence piece during subsequent welding, the assembly of the confluence piece and the insulating part is simplified, and the production efficiency is improved.

In addition, adopt this kind of connected mode to connect insulating part and piece that converges, can not lead to the fact the influence to the performance (like structural strength) of piece that converges, be favorable to guaranteeing the performance of battery, promote product quality.

The technical scheme described in the embodiment of the application includes but is not limited to be suitable for assembling the bus bar piece and the insulating piece in various types of batteries.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric device can be but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery 100 is provided inside the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for starting, navigation, and operational power requirements while the vehicle 1000 is traveling.

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

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present disclosure. The battery 100 includes a case 10, a plurality of battery cells 20, and a bus bar assembly 30, wherein the bus bar assembly 30 connects the plurality of battery cells 20 in series or in parallel. The battery cell 20 is accommodated in the case 10. The case 10 is used to provide a receiving space for the battery cells 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 together define a receiving space for receiving the battery cell 20. The second part 12 may be a hollow structure with one open end, the first part 11 may be a plate-shaped structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a containing space; the first portion 11 and the second portion 12 may be both hollow structures with one side open, and the open side of the first portion 11 may cover the open side of the second portion 12. Of course, the case 10 formed by the first and second portions 11 and 12 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

The battery 100 has a plurality of battery cells 20, and the plurality of battery cells 20 may be connected in series or in parallel or in series-parallel, where in series-parallel is to say that the plurality of battery cells 20 are connected in series or in parallel. The plurality of battery monomers 20 can be directly connected in series or in parallel or in series-parallel through the confluence assembly 30, and the whole body formed by the plurality of battery monomers 20 and the confluence assembly 30 is accommodated in the box body 10; of course, the battery 100 may also be formed by connecting a plurality of battery cells 20 in series, in parallel, or in series-parallel with each other through the bus bar assembly 30 to form a battery module, and then connecting a plurality of battery modules in series, in parallel, or in series-parallel with each other to form a whole, and the whole is accommodated in the case 10.

Wherein, each battery cell 20 may be a secondary battery cell or a primary battery cell; but not limited thereto, a lithium sulfur battery cell, a sodium ion battery cell, or a magnesium ion battery cell may also be used. The battery cell 20 may be cylindrical, flat, rectangular parallelepiped, or other shape.

Referring to fig. 3, with reference to fig. 4 and 5, fig. 3 is a schematic structural diagram of a bus bar assembly 30 according to some embodiments of the present disclosure. Fig. 4 is a schematic front view of a bus bar assembly 30 according to some embodiments of the present disclosure. Fig. 5 is a side view of a bus bar assembly 30 according to some embodiments of the present disclosure. The embodiment of the present application provides a bus bar assembly 30, and the bus bar assembly 30 includes a bus bar 31 and an insulating member 32. The bus bar 31 is used to connect a plurality of battery cells 20 in series or in parallel. The insulating member 32 serves to carry the bus bar 31 in the first direction. The insulating member 32 includes a body 321 and a mounting structure including two mounting portions 322, the two mounting portions 322 protruding along a first direction and disposed on a surface of the body 321. The two mounting portions 322 are arranged oppositely to form a mounting space for mounting the bus bar 31 between the two mounting portions 322.

The bus bar 31 is a member capable of connecting the plurality of battery cells 20 in series or in parallel to achieve electrical connection between the plurality of battery cells 20. The bus bar 31, which may also be referred to as a bus bar, or a bus bar, is generally a metal foil, and may be welded to the electrode terminals of the battery cells 20 to connect the plurality of battery cells 20 in series or in parallel.

The insulating member 32 is made of a material having insulating properties, such as plastic or rubber. The insulating member 32 serves to separate the bus bar 31 from other electrical components, so that the bus bar 31 is insulated from other electrical components to prevent short circuits from occurring.

The first direction may be a thickness direction of the insulating member 32, and referring to fig. 3, the first direction is a direction a shown in fig. 3. According to some embodiments of the present application, a line connecting the two mounting portions 322 is defined as a second direction, and the second direction is a B direction shown in fig. 3.

The body 321 is a main body portion of the insulating member 32, the mounting portion 322 is a protrusion structure protruding in the first direction and provided on a surface of the body 321, and the mounting portion 322 is used to mount the bus bar 31. In the present embodiment, the bus bar 31 is mounted in the mounting space formed by the two oppositely disposed mounting portions 322.

The two installation parts 322 are arranged on the insulating part 32 of the confluence assembly 30, and the confluence part 31 is installed in an installation space formed between the two installation parts 322, so that the insulating part 32 and the confluence part 31 are connected to form a whole, the relative positions of the insulating part 32 and the confluence part 31 are limited, a welding and positioning tool is not needed to be arranged to position the confluence part 31 during subsequent welding, the assembly of the confluence part 31 and the insulating part 32 is simplified, and the production efficiency is improved.

In addition, the insulating member 32 and the bus bar member 31 are connected by adopting the connection mode, so that the performance (such as structural strength) of the bus bar member 31 is not influenced, the performance of the battery 100 is ensured, and the product quality is improved.

Referring to fig. 6, fig. 6 is a front view of an insulating member 32 according to some embodiments of the present disclosure. According to some embodiments of the present disclosure, the body 321 is a plate-shaped structure, the body 321 has a receiving groove 323, and the bus bar 31 is at least partially received in the receiving groove 323. The mounting portion 322 is protruded on the bottom wall of the receiving groove 323. It should be understood that the protruding arrangement of the mounting portion 322 on the bottom wall of the receiving groove 323 should also be included in the range of "the mounting portion 322 is protrudingly arranged on the surface of the body 321 along the first direction". Alternatively, the mounting portion 322 partially protrudes out of the receiving groove 323, i.e., the height of the mounting portion 322 is greater than the depth of the receiving groove 323. According to some embodiments of the present application, the height of the mounting portion 322 is higher than that of the body 321, so as to mount the bus bar 31 and perform a bus function of the bus bar 31.

According to some embodiments of the present application, the bus bar assembly 30 further comprises a stopper structure for preventing the bus bar 31 from being separated from the mounting space away from the body 321 in the first direction.

The position limiting structure is engaged with the bus bar 31 and the mounting portion 322 to prevent the bus bar 31 from separating from the mounting space along the first direction away from the body 321.

Through setting up limit structure, will converge piece 31 and spacing in installation space, prevent to converge piece 31 and insulating part 32 dislocation in the transportation, and then lead to follow-up welding bad.

Referring to fig. 6, 7, 8 and 9, fig. 7 is a cross-sectional view taken at the position C-C in fig. 5. Fig. 8 is a schematic bottom view of a bus bar 31 according to some embodiments of the present disclosure. Fig. 9 is a side view of a bus bar 31 according to some embodiments of the present disclosure. According to some embodiments of the present application, the stopper structure includes a protrusion 332 provided to the bus bar 31 and a recess 331 provided to the mounting portion 322, the protrusion 332 being fitted to the recess 331.

The protrusion 332 is a protrusion protruding from the surface of the bus bar 31. The recess 331 is a recessed structure, such as a through hole or a groove, formed in the mounting portion 322.

The protruding portion 332 is arranged on the bus bar 31, and the concave portion 331 is arranged on the mounting portion 322, so that the protruding portion 332 is matched with the concave portion 331, on one hand, the protruding portion 332 and the concave portion 331 are matched to have good limiting performance, and the limitation on the relative position of the bus bar 31 and the mounting portion 322 can be guaranteed. On the other hand, the fitting assembly of the convex portion 332 and the concave portion 331 is simple and easy to implement, and the assembly of the bus bar 31 and the insulating member 32 can be simplified, thereby improving the production efficiency. Moreover, compared with the technical solution of directly forming the concave portion 331 on the bus bar 31, the convex portion 332 formed on the bus bar 31 does not reduce the performance (such as the structural strength) of the bus bar 31, so as to facilitate the improvement of the product quality.

According to some embodiments of the present application, the mounting portion 322 is provided with a plurality of recesses 331, and the plurality of recesses 331 are spaced apart along the first direction.

"plurality" means two or more (including two), in other words, a plurality may be two, three, or three or more.

By providing the plurality of recesses 331 in the mounting portion 322 along the first direction, it is possible to select an appropriate recess 331 for mounting when mounting the bus bar 31, thereby improving the structural flexibility.

Referring to fig. 8 and fig. 9, according to some embodiments of the present disclosure, the protruding portions 332 are disposed on two sides of the bus bar 31 along a second direction, which is a connection direction of the two mounting portions 322.

The "convex portions 332 are provided on both sides of the bus bar 31 in the second direction" may be understood as that one side of the bus bar 31 in the second direction is provided with at least one convex portion 332, and the other side of the bus bar 31 in the second direction is provided with at least one convex portion 332. For example, two convex portions 332 are provided on the bus bar 31, wherein one convex portion 332 is provided on one side of the bus bar 31 in the second direction, and the other convex portion 332 is provided on the other side of the bus bar 31 in the first direction.

Through setting up protruding portion 332 in the both sides of converging piece 31 along the second direction, when being convenient for converge piece 31 and installation department 322 cooperation, can not have too big change to the structure of converging piece 31, be favorable to reducing and reform transform the cost.

Referring to fig. 10, fig. 10 is a bottom view of a bus bar 31 according to another embodiment of the present disclosure. According to other embodiments of the present application, the stopper structure includes a recess 331 provided to the bus bar 31 and a protrusion 332 provided to the mounting portion 322, the protrusion 332 being fitted to the recess 331.

The recess 331 is a recessed structure, such as a through hole or a groove, formed in the bus bar 31. The protrusion 332 is a protrusion protruding from the surface of the mounting portion 322.

By arranging the concave part 331 on the bus bar 31 and arranging the convex part 332 on the mounting part 322, the convex part 332 is matched with the concave part 331, on one hand, the convex part 332 and the concave part 331 are matched to have better limiting performance, and the relative position of the bus bar 31 and the mounting part 322 can be guaranteed to be limited. On the other hand, the fitting and assembly of the convex portion 332 and the concave portion 331 is simple and easy to implement, and the assembly of the bus bar 31 and the insulating member 32 can be simplified, thereby improving the production efficiency.

Optionally, the bus bar 31 comprises an arch 312 facing away from the body 321 in the first direction. The concave portion 331 is disposed on a surface of the arch 312 facing away from the body 321 along the first direction, and the convex portion 332 abuts against the concave portion 331 to limit the arch 312 between the body 321 and the convex portion 332.

The "the bus bar 31 includes the arch 312 facing away from the body 321 in the first direction" may be understood as the bus bar 31 having the arch 312 formed thereon in the first direction with the dome of the arch 312 facing away from the body 321. By "the recess 331 is disposed on a surface of the arch 312 facing away from the body 321 in the first direction" it is understood that the recess 331 is formed on an outer surface (a surface of a larger diameter on the arch) of the arch 312.

By forming the arch 312 on the bus bar 31, the performance (e.g., structural strength) of the bus bar 31 is enhanced, and then the arch 312 is formed with the recess 331, so that the performance of the bus bar 31 after the recess 331 is formed is not reduced compared to the performance of the bus bar 31 before the arch 312 is formed. Furthermore, by providing the arch structure 312, the arch structure 312 can be used as a fool-proof structure to prevent the bus bar 31 and the insulating member 32 from being installed incorrectly.

Referring to FIG. 10, in accordance with other embodiments of the present application, the recess 331 is formed by notching the arch 312. Referring to fig. 11, fig. 11 is a bottom view of a bus bar 31 according to still other embodiments of the present disclosure. According to further embodiments of the present application, the recess 331 and the arch 312 are both formed by bending during the manufacture of the bus bar 31. It should be understood that the solutions shown in fig. 10 and 11 are both included in that "the bus bar 31 comprises an arched structure 312 facing away from the body 321 in the first direction. The recess 331 is disposed within a range of the arch 312 away from the surface "of the body 321 in the first direction.

According to some embodiments of the present application, two mounting portions 322 cooperate to clamp the bus bar 31.

"fittingly clamping" means that the two mounting portions 322 apply a clamping force to the bus bar 31 in opposite directions to clamp the bus bar 31 in a limited position.

By sandwiching the bus bar 31 between the two mounting portions 322, the bus bar 31 can be restrained without changing the structure of the bus bar 31.

Optionally, the mounting portion 322 is made of an elastic material. In the second direction, the distance between the two mounting portions 322 is smaller than the length of the bus bar 31, and the second direction is a direction of a line connecting the two mounting portions 322.

The elastic material is a material that can be elastically deformed when an external force is applied and can be restored to the deformation when the external force is removed, and the elastic material may be rubber, a spring, spring steel, or the like.

When the bus bar 31 is fitted into the fitting space, the fitting portions 322 are deformed to generate a reaction force against the bus bar 31, and the bus bar 31 is sandwiched between the two fitting portions 322.

According to some embodiments of the present application, the bus bar assembly 30 includes a plurality of bus bars 31, and the insulator 32 includes a plurality of mounting structures, which correspond one-to-one to the bus bars 31.

"plurality" means more than two (including two), in other words, a plurality may be two, three, or more than three.

By providing a plurality of mounting structures to position the plurality of bus bars 31, the plurality of bus bars 31 connect the plurality of battery cells 20 in series or in parallel.

Optionally, a plurality of mounting structures are distributed on the body 321.

The embodiment of the present application further provides a battery 100, where the battery 100 includes a plurality of battery cells 20 and the above-mentioned bus bar assembly 30, and the bus bar 31 is connected in series or in parallel with the plurality of battery cells 20.

The embodiment of the present application further provides an electric device, where the electric device includes the above battery 100, and the battery 100 is used to provide electric energy.

Please refer to fig. 3-9 according to some embodiments of the present application.

The embodiment of the present application provides a bus bar assembly 30, and the bus bar assembly 30 includes a bus bar 31 and an insulating member 32. The bus bar 31 is used to connect a plurality of battery cells 20 in series or in parallel. The insulating member 32 serves to carry the bus bar 31 in the first direction. The insulating member 32 includes a body 321 and a mounting structure including two mounting portions 322, the two mounting portions 322 protruding along a first direction and disposed on a surface of the body 321. The two mounting portions 322 are arranged oppositely to form a mounting space for mounting the bus bar 31 between the two mounting portions 322. The bus bar assembly 30 further includes a stopper structure for preventing the bus bar 31 from being separated from the installation space away from the body 321 in the first direction. The stopper structure includes a protrusion 332 provided to the bus bar 31 and a recess 331 provided to the mounting portion 322, and the protrusion 332 is fitted to the recess 331. The mounting portion 322 is provided with a plurality of recesses 331, and the plurality of recesses 331 are arranged at intervals in the first direction.

The two installation parts 322 are arranged on the insulating part 32 of the confluence assembly 30, and the confluence part 31 is installed in an installation space formed between the two installation parts 322, so that the insulating part 32 and the confluence part 31 are connected to form a whole, the relative positions of the insulating part 32 and the confluence part 31 are limited, a welding and positioning tool is not needed to be arranged to position the confluence part 31 during subsequent welding, the assembly of the confluence part 31 and the insulating part 32 is simplified, and the production efficiency is improved. In addition, the insulating member 32 and the bus bar member 31 are connected by adopting the connection mode, so that the performance (such as structural strength) of the bus bar member 31 is not influenced, the performance of the battery 100 is ensured, and the product quality is improved. The protruding portion 332 is arranged on the bus bar 31, and the concave portion 331 is arranged on the mounting portion 322, so that the protruding portion 332 is matched with the concave portion 331, on one hand, the protruding portion 332 and the concave portion 331 are matched to have good limiting performance, and the limitation on the relative position of the bus bar 31 and the mounting portion 322 can be guaranteed. On the other hand, the fitting assembly of the convex portion 332 and the concave portion 331 is simple and easy to implement, and the assembly of the bus bar 31 and the insulating member 32 can be simplified, thereby improving the production efficiency. Moreover, compared with the technical solution of directly forming the concave portion 331 on the bus bar 31, the convex portion 332 formed on the bus bar 31 does not reduce the performance (such as the structural strength) of the bus bar 31, so as to facilitate the improvement of the product quality. By providing the plurality of recesses 331 in the mounting portion 322 along the first direction, it is possible to select an appropriate recess 331 for mounting when mounting the bus bar 31, thereby improving the structural flexibility.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (12)

1. A bus bar assembly, comprising:

the bus bar is used for connecting a plurality of battery cells in series or in parallel;

the insulating part is used for bearing the bus-bar part along a first direction, and comprises a body and a mounting structure, wherein the mounting structure comprises two mounting parts, the two mounting parts are arranged along the first direction in a protruding mode and arranged on the surface of the body, and the two mounting parts are arranged oppositely to form a mounting space for mounting the bus-bar part between the two mounting parts.

2. The bus assembly of claim 1, further comprising a stop structure for preventing the bus bar from exiting the mounting space away from the body in the first direction.

3. The bus bar assembly of claim 2, wherein the limiting structure comprises a protrusion provided to the bus bar and a recess provided to the mounting portion, the protrusion fitting into the recess.

4. The manifold assembly of claim 3, wherein the mounting portion has a plurality of recesses disposed thereon, the plurality of recesses being spaced apart along the first direction.

5. The bus bar assembly according to claim 3, wherein the protruding portions are disposed on both sides of the bus bar in a second direction, the second direction being a direction of a line connecting the two mounting portions.

6. The assembly according to claim 2, wherein the stopper structure includes a recess provided to the bus bar and a protrusion provided to the mounting portion, the protrusion being fitted to the recess.

7. The manifold assembly of claim 6, wherein the manifold includes an arcuate structure facing away from the body in the first direction, the recess is disposed on a surface of the arcuate structure facing away from the body in the first direction, and the protrusion abuts the recess to trap the arcuate structure between the body and the protrusion.

8. The manifold assembly of claim 1, wherein the two mounting portions cooperatively clamp the manifold.

9. The bus bar assembly of claim 8, wherein the mounting portions are made of an elastic material, and a distance between the two mounting portions is smaller than a length of the bus bar in a second direction, which is a direction of a line connecting the two mounting portions.

10. The manifold assembly of any of claims 1-9, wherein the manifold assembly comprises a plurality of manifold pieces, and the insulator comprises a plurality of the mounting structures, the mounting structures corresponding one-to-one with the manifold pieces.

11. A battery, comprising:

a plurality of battery cells;

the buss assembly of any of claims 1-10, the buss member connects the plurality of battery cells in series or in parallel.

12. An electric consumer, characterized in that the electric consumer comprises a battery according to claim 11 for providing electric energy.

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