CN217134620U - Sampling assembly, battery and electric device - Google Patents

Abstract

The application provides a sampling subassembly, battery and power consumption device, the sampling subassembly includes: a bus member for electrically connecting the battery cells; the flexible circuit board is used for collecting signals of the battery monomers and comprises a conducting layer and a first insulating layer, wherein the first insulating layer covers one side of the conducting layer in the thickness direction; the first insulating layer is provided with an opening, the conducting layer comprises an exposed area exposed out of the opening, and the exposed area is connected with the bus component. The sampling assembly of the technical scheme of the application can effectively improve the stability of battery sampling, and effectively simplifies the sampling structure, improves production efficiency.

Description

Sampling assembly, battery and electric device

Technical Field

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

Background

Energy conservation and emission reduction are the key points of sustainable development of the automobile industry, and electric vehicles become important components of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in its development.

In battery technology, the acquisition of signals such as voltage and temperature of a battery is important for ensuring the safety of the battery. How to simplify the sampling structure and improve the production efficiency of the battery while ensuring the sampling stability is an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

The application provides a sampling subassembly, battery and power consumption device, this sampling subassembly can simplify the sampling structure when guaranteeing sampling stability, improves production efficiency.

In a first aspect, the present application provides a sampling assembly comprising: a bus member for electrically connecting the battery cells; the flexible circuit board is used for collecting signals of the battery monomers and comprises a conducting layer and a first insulating layer, wherein the first insulating layer covers one side of the conducting layer in the thickness direction; the first insulating layer is provided with an opening, the conducting layer comprises an exposed area exposed out of the opening, and the exposed area is connected with the bus component.

Among the above-mentioned technical scheme, the flexible circuit board of sampling subassembly includes the conducting layer and covers the first insulating layer in the ascending one side of thickness direction of conducting layer, first insulating layer is at the conducting layer and converge and form insulating protection between the part, first insulating layer is provided with the opening and makes the conducting layer include exposed district, the exposed district of conducting layer with converge the part and be connected, compare in the tradition with the conducting layer of flexible circuit board through nickel piece and converge the welded structure of part, this application forms the sampling subassembly with the conducting layer of flexible circuit board and the part lug connection that converges, avoid influencing the stability that the conducting layer and converge the part are connected because of the easy oxidation of nickel piece, thereby guarantee the stability of sampling structure, and simultaneously, be connected the conducting layer of flexible circuit board with the part that converges, sampling structure has effectively been simplified, be favorable to improving production efficiency.

According to some embodiments of the present application, the exposed area is welded or connected by glue to the bus member.

Among the above-mentioned technical scheme, the exposed area with converge the part accessible welding or colloid bonding connection, simple process, connection stability is strong, effectively guarantees to converge the tensile strength after part and the flexible circuit board are connected, and then effectively guarantees the functional stability of sampling subassembly.

According to some embodiments of the present application, the first insulation layer includes a first insulation layer body and a first insulation layer extension portion, the first insulation layer extension portion extends from an edge of the first insulation layer body, and the opening is disposed in the first insulation layer extension portion.

Among the above-mentioned technical scheme, first insulating layer includes integrated into one piece's first insulating layer body and first insulating layer extension, and the opening setting is in the extension of first insulating layer, and such structure is favorable to satisfying the area of coverage that the sampling subassembly was reduced when naked district and the part connection that converges to reduce material cost.

According to some embodiments of the present application, the conductive layer includes a conductive layer body and a conductive layer extension integrally formed, the conductive layer extension extending from an edge of the conductive layer body; the first insulating layer body covers the conductive layer body, and the first insulating layer extension portion covers the conductive layer extension portion.

Among the above-mentioned technical scheme, the conducting layer is corresponding with the structure on first insulating layer to guarantee that first insulating layer plays more comprehensive insulation protection to the conducting layer, conducting layer extension and conducting layer body integrated into one piece just extend in order to be connected with the part that converges from the edge of conducting layer body, be favorable to reducing the coverage area of conducting layer body, avoid flexible circuit board to occupy too much installation space, and effectively save flexible circuit board's material cost.

According to some embodiments of the application, the conductive layer extension includes a collection portion for connecting with the bus member and a connection portion for connecting the collection portion and the conductive layer body, the collection portion having a width greater than a width of the connection portion.

Among the above-mentioned technical scheme, the conducting layer extension includes collection portion and connecting portion, and collection portion and conducting layer body are connected to connecting portion, and the width of collection portion is greater than the width of connecting portion, is favorable to guaranteeing the conducting layer and the joint strength who converges the part, and the width of connecting portion is less than the width of collection portion, is favorable to further reducing the occupation space of conducting layer extension to the installation of other spare parts for the battery provides more spaces.

According to some embodiments of the present application, the sampling assembly further comprises a sealing gel disposed around the opening.

Among the above-mentioned technical scheme, the sampling subassembly is including sealed glue, and sealed glue encircles the opening setting to keep apart with the external world the connection region that will expose the district and converge the part, avoid impurity such as aqueous vapor to corrode the conducting layer and converge the joining region of part and make its oxidation or not hard up, thereby effectively reduce the conducting layer and the risk of converging the part junction separation, and then effectively improve the conducting layer and converge the stability that the part is connected.

According to some embodiments of the present application, at least a portion of the sealant is disposed along an edge of the first insulating layer extension.

In the technical scheme, at least one part of the sealant is arranged along the edge of the extension part of the first insulating layer, so that the risk that impurities enter between the first insulating layer and the bus part or between the first insulating layer and the conducting layer to approach the connecting area of the conducting layer and the bus part through the edge of the extension part of the first insulating layer is effectively reduced, and the protection effect of the sealant on the stability of the connection of the conducting layer and the bus part is further improved.

According to some embodiments of the present application, the flexible circuit board further includes a second insulating layer covering the other side in the thickness direction of the conductive layer.

Among the above-mentioned technical scheme, flexible circuit board includes first insulating layer and second insulating layer, first insulating layer and second insulating layer cover respectively in the ascending relative both sides of thickness direction of conducting layer, first insulating layer and second insulating layer form two-sided insulating protective effect to the conducting layer, when using the sampling subassembly in the battery, first insulating layer and second insulating layer can effectively play the insulating protective effect to the conducting layer, avoid the conducting layer and the short circuit of other parts of battery to effectively guarantee the security performance of sampling subassembly.

According to some embodiments of the present application, the conductive layer includes a conductive layer body and a conductive layer extension integrally formed, the conductive layer extension extending from an edge of the conductive layer body; the first insulating layer comprises a first insulating layer body and a first insulating layer extension part which are integrally formed, the first insulating layer extension part extends out from the edge of the first insulating layer body, the first insulating layer body covers the conducting layer body, the first insulating layer extension part covers the conducting layer extension part, and the opening is formed in the first insulating layer extension part; the second insulating layer comprises a second insulating layer body and a second insulating layer extension portion which are integrally formed, the second insulating layer extension portion extends out of the edge of the second insulating layer body, the second insulating layer body covers the conducting layer body, and the second insulating layer extension portion covers the conducting layer extension portion.

In the technical scheme, the structure of the conducting layer is convenient for expanding the gap between the conducting layer body and the confluence part, and when the sampling assembly is applied to a battery, fine adjustment is conveniently carried out according to the actual size, the installation reserved position and the like of the battery, so that the applicability of the sampling assembly and the inclusion of size errors are improved; the structures of the first insulating layer and the second insulating layer correspond to the structure of the conducting layer, so that the conducting layer can be protected comprehensively; moreover, the structure of the conducting layer, the first insulating layer and the second insulating layer is beneficial to reducing the total coverage area of the flexible circuit board, the flexible circuit board is prevented from occupying too much installation space of the battery, the risk of interference between the flexible circuit board and other parts of the battery is reduced, and the material cost is effectively reduced.

According to some embodiments of the present application, an edge of the first insulating layer and an edge of the second insulating layer both extend beyond an edge of the conductive layer, and the edge of the first insulating layer and the edge of the second insulating layer are correspondingly connected.

In the technical scheme, the edge of the first insulating layer and the edge of the second insulating layer both exceed the edge of the conducting layer and are correspondingly connected, so that the conducting layer is wrapped between the first insulating layer and the second insulating layer through the structure, and the comprehensiveness of the insulating protection effect of the first insulating layer and the second insulating layer on the non-exposed area of the conducting layer is further improved.

According to some embodiments of the present application, an edge of the first insulating layer and an edge of the second insulating layer each extend 0.25mm to 1mm beyond an edge of the conductive layer.

In the technical scheme, the edge of the first insulating layer and the edge of the second insulating layer exceed the edge of the conducting layer by 0.25mm to 1mm, if the edge of the first insulating layer and the edge of the second insulating layer exceed the edge of the conducting layer too much, the coverage area of the flexible circuit board can be increased, too much redundancy exists between the edge of the first insulating layer and the edge of the second insulating layer, and the material cost is wasted, if the edge of the first insulating layer and the edge of the second insulating layer exceed the edge of the conducting layer too little, the edges of the first insulating layer and the second insulating layer cannot be effectively connected with each other to form insulating coverage on the edge of the conducting layer, and the edge of the first insulating layer and the edge of the second insulating layer both exceed the edge of the conducting layer by 0.25mm to 1mm, so that the insulating coverage on the edge of the conducting layer can be effectively formed, and the material cost can be reduced.

According to some embodiments of the present application, an edge of the first insulating layer and an edge of the second insulating layer each extend 0.25mm to 0.8mm beyond an edge of the conductive layer.

In the technical scheme, the edge of the first insulating layer and the edge of the second insulating layer exceed the edge of the conducting layer by 0.25mm to 0.8mm, so that the material cost is reduced while the edge of the conducting layer is further ensured to form comprehensive insulating coverage.

According to some embodiments of the present application, the second insulating layer has a thickness of 10um to 100 um.

Among the above-mentioned technical scheme, the thickness of second insulating layer is 10um to 100um, is favorable to reducing the thickness and the weight of second insulating layer as far as possible when guaranteeing the structural stability of second insulating layer and insulating protective effect to be favorable to improving the energy density of battery and alleviate the whole weight of battery.

According to some embodiments of the present application, the first insulating layer has a thickness of 10um to 100 um.

Among the above-mentioned technical scheme, the thickness of first insulating layer is 10um to 100um, is favorable to reducing the thickness and the weight of first insulating layer as far as possible when guaranteeing the structural stability and the insulating protective effect on first insulating layer to be favorable to improving the energy density of battery and alleviate the whole weight of battery.

According to some embodiments of the present application, the sampling assembly includes a plurality of bus members, the first insulating layer is provided with a plurality of openings such that the conductive layer includes a plurality of exposed regions, and the plurality of exposed regions are correspondingly connected with the plurality of bus members.

Among the above-mentioned technical scheme, first insulating layer is provided with a plurality of openings to the conducting layer of flexible circuit board sets up a plurality of bare district in order to establish connected relation with a plurality of parts that converge, thereby conveniently sets up the sampling subassembly into different specifications in order to be applied to the battery of different scales.

In a second aspect, the present application also provides a battery comprising: a battery cell; the sampling assembly according to any one of the preceding claims, wherein the bus member is electrically connected to the battery cell.

Due to the characteristics of the sampling assembly provided by the embodiment of the first aspect of the present application, the battery of the embodiment of the second aspect of the present application also has better performance stability.

In a third aspect, the present application further provides an electric device, which includes the battery according to the above aspect, and the battery is used for providing 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 isometric view of a battery provided by some embodiments of the present application;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

fig. 4 is a partial schematic structural view of a side of a flexible circuit board connected to a bus member according to some embodiments of the present disclosure;

fig. 5 is a schematic structural diagram of a flexible circuit board according to some embodiments of the present application;

FIG. 6 is a schematic diagram illustrating a partial structure of a sampling assembly according to some embodiments of the present application;

FIG. 7 is an exploded view of a portion of the sampling assembly shown in FIG. 6;

FIG. 8 is a schematic view of the relationship between the sealant and the edge of the first insulating layer extension according to some embodiments of the present application;

fig. 9 is a perspective view of a partial structure of a flexible circuit board according to some embodiments of the present application.

Icon: 1000-a vehicle; 100-a battery; 10-a sampling assembly; 11-a bus member; 12-a flexible circuit board; 121-a conductive layer; 1211-a conductive layer body; 1212-conductive layer extension; 1212 a-connecting part; 1212 b-a collecting portion; 1213-bare areas; 122 — a first insulating layer; 1221-opening; 1222-a first insulating layer body; 1223-first insulating layer extension; 1223 a-a first extension; 1223 b-a second extension; 123-a second insulating layer; 1231 — a second insulating layer body; 1232 — second insulating layer extension; 13-sealing glue; 20-a battery cell; 30-an insulator; 200-a controller; 300-motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

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 "plurality" refers to two or more (including two).

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 specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are used in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection and signal connection; 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.

In the embodiments of the present application, like reference numerals denote like parts, and a detailed description of the same parts is omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width and other dimensions of the various components in the embodiments of the present application and the overall thickness, length, width and other dimensions of the integrated device shown in the drawings are only exemplary and should not constitute any limitation to the present application.

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. The plurality of battery monomers can be connected in series, in parallel or in series-parallel to directly form a battery, and the series-parallel connection means that the plurality of battery monomers are connected in series or in parallel. The plurality of battery monomers can also be connected in series, in parallel or in series-parallel to form a battery module, and then the plurality of battery modules are connected in series, in parallel or in series-parallel to form a battery. The battery may further include a case for enclosing one or more battery cells. The box can avoid liquid or other foreign matters to influence the charging or discharging of battery monomer.

The battery further comprises a bus bar component, and the bus bar component is used for electrically connecting the plurality of battery cells so as to realize series connection, parallel connection or series-parallel connection of the plurality of 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 embodiments of the present application. The battery cell may be a cylinder, a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application. The battery cells are generally divided into three types in an encapsulation manner: the cylindrical battery monomer, the square battery monomer and the soft package battery monomer are also not limited in the embodiment of the application.

The battery monomer comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive pole piece, a negative pole piece and an isolating membrane. The battery cell mainly depends on metal ions to move between the positive pole piece and the negative pole piece to work. The positive pole piece includes anodal mass flow body and anodal active substance layer, and anodal active substance layer coats in anodal mass flow body's surface, and the anodal mass flow body protrusion in the anodal mass flow body that has coated anodal active substance layer of uncoated anodal active substance layer, and the anodal mass flow body that does not coat anodal active substance layer is as anodal utmost point ear. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative pole piece includes negative pole mass flow body and negative pole active substance layer, and the negative pole active substance layer coats in the surface of negative pole mass flow body, and the negative pole mass flow body protrusion in the negative pole mass flow body of coating the negative pole active substance layer not coating the negative pole active substance layer, and the negative pole mass flow body of not coating the negative pole active substance layer is as negative pole utmost point ear. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the fuse is not fused when a large current is passed, the number of the positive electrode tabs is multiple and the positive electrode tabs are stacked together, and the number of the negative electrode tabs is multiple and the negative electrode tabs are stacked together. The material of the isolation film may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may have a winding structure or a lamination structure, and the embodiment of the present application is not limited thereto.

At present, the application of the power battery is more and more extensive from the development of market situation. The power 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. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding.

In the most core part battery module of power battery package, the collection of signals such as voltage, temperature of battery is crucial to the security of battery, how to simplify the sampling structure when guaranteeing sampling stability, improves battery production efficiency, is a problem that awaits the solution urgently.

The applicant analyzes and notices that in the prior battery production technology, a sampling structure comprising a flexible circuit board is generally adopted to sample the battery, a conductive layer of the flexible circuit board needs to be welded with a bus component through a nickel sheet to form a sampling passage, but the nickel sheet is very easy to oxidize before welding, the welding quality of the nickel sheet is seriously influenced, the communication stability of a flexible circuit board acquisition line and the bus component is influenced, and the problem of poor sampling stability is caused; and the structure is complicated, the assembly welding process is complicated, and the production efficiency is low.

In order to effectively relieve the problems of complex sampling structure and poor stability, the applicant designs a sampling assembly through research, the flexible circuit board of the sampling assembly comprises a conductive layer and a first insulating layer, the first insulating layer covers one side of the conductive layer in the thickness direction, the first insulating layer is provided with an opening, and an exposed area exposed out of the opening of the conductive layer is connected with a confluence component.

By adopting the sampling assembly with the structure, the first insulating layer forms insulating protection between the conducting layer and the confluence part, and the exposed area of the conducting layer is connected with the confluence part, so that compared with the traditional structure that the conducting layer of the flexible circuit board is welded with the confluence part through a nickel sheet, the technical scheme of the application can avoid the influence on the conduction stability of the flexible circuit board and the confluence part due to the easy oxidation of the nickel sheet, thereby effectively improving the stability of the sampling structure; in addition, according to the technical scheme, the conducting layer of the flexible circuit board is connected with the confluence part to form the sampling assembly, so that the assembly welding process of the sampling structure is effectively simplified, and the production efficiency is effectively improved.

The sampling subassembly that this application embodiment disclosed can but not be used for the sampling of voltage signal, the temperature signal of battery, and the battery that this application embodiment disclosed can but not be used for among consumer such as vehicle, boats and ships or aircraft, can use the battery that this application discloses to constitute this consumer's electrical power generating system, like this, can effectively promote the life and the performance of battery.

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.

The battery described in the embodiments of the present application is not limited to be applied to the above-described electric devices, but may be applied to all electric devices using the battery, but for brevity of description, the following embodiments take one electric device of an embodiment of the present application as an example of a vehicle.

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

Referring to fig. 2, fig. 2 is an isometric view of a battery according to some embodiments of the present disclosure, in which the battery 100 includes a battery cell 20 and a sampling assembly 10, and the sampling assembly 10 is disposed on top of the battery cell 20.

In the battery 100, the number of the battery cells 20 may be multiple, and the multiple battery cells 20 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the multiple battery cells 20. The plurality of battery cells 20 may be directly connected in series or in parallel or in series-parallel, however, the battery 100 may also be formed by connecting the plurality of battery cells 20 in series or in parallel or in series-parallel to form a battery module, and then connecting the plurality of battery modules in series or in parallel or in series-parallel to form a whole.

The battery 100 may further include other structures, for example, the battery 100 may further include a box (not shown in the figure), the battery cell 20 is accommodated in the box, the box is configured to provide an accommodating space for the battery cell 20, the box may be a conventional battery box, and the structure of the box is not limited and described herein.

As shown in fig. 2, the battery 100 may further include an insulating member 30, the insulating member 30 is disposed between the sampling assembly 10 and the battery cell 20 to form an insulating protection between the sampling assembly 10 and the battery cell 20, and it is understood that an avoiding hole may be disposed on the insulating member 30 to enable the sampling assembly 10 to be connected with the battery cell 20 at the avoiding hole.

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

Referring to fig. 2, and further referring to fig. 3 and fig. 4, fig. 3 is an enlarged partial structure view of a portion a shown in fig. 2, and fig. 4 is a partial structure view of a side of a flexible circuit board connected to a bus member according to some embodiments of the present disclosure. Some embodiments of the present application provide a sampling assembly 10, the sampling assembly 10 includes a bus member 11 and a flexible circuit board 12, the bus member 11 is used for electrically connecting with a battery cell 20. The flexible circuit board 12 is used for collecting signals of the battery cells 20, the flexible circuit board 12 includes a conductive layer 121 and a first insulating layer 122, the first insulating layer 122 covers one side of the conductive layer 121 in a thickness direction, the first insulating layer 122 is provided with an opening 1221, the conductive layer 121 includes an exposed area 1213 exposed from the opening 1221, and the exposed area 1213 is connected to the bus bar member 11.

A Flexible Printed Circuit (FPC) 12, which is also called a Flexible Printed Circuit or a Flexible Printed Circuit. The conductive layer 121 may also be referred to as a conductive layer, the conductive layer 121 may be made of copper foil, the conductive layer 121 may have a collecting end, the collecting end may be a voltage collecting end used for collecting voltage, and the voltage collecting end may be connected to the bus bar 11, so that the conductive layer 121 may collect voltage signals of the battery cells 20. Of course, the conductive layer 121 may also be integrated with a temperature acquisition unit (such as a temperature sensor) to acquire a temperature signal of the battery cell 20.

Furthermore, the conductive layer 121 may also be integrated with a connector (not shown), and the collecting terminal and the connector are connected through the conductive layer 121, and the connector is used for transmitting the electric signal collected by the conductive layer 121 to a control or management system outside the battery 100.

The first insulating layer 122 is used to protect and insulate the conductive layer 121, the first insulating layer 122 may be an insulating film structure, or an injection molding having a certain structural strength, and when the first insulating layer 122 is an insulating film, the first insulating layer 122 may be a PET (Polyethylene Terephthalate) film, a PI (Polyimide) film, or the like. The first insulating layer 122 and the conductive layer 121 may be adhered by a gel.

The size, shape and dimension of the opening 1221 of the first insulating layer 122 can be flexibly set according to the area requirement of the connection region between the conductive layer 121 and the bus bar 11, for example, the opening 1221 of the first insulating layer 122 is rectangular, so that the conductive layer 121 has a rectangular exposed region 1213, and the rectangular exposed region 1213 is connected to the bus bar 11.

The bus bar member 11 is used to connect a plurality of battery cells 20 in series, parallel, or series-parallel with each other. The bus members 11 are made of copper or aluminum members corresponding to the positive and negative electrodes of the battery cells 20, for example, the positive electrodes of the battery cells 20 may be connected to each other by using an aluminum bus member, and the negative electrodes of the battery cells 20 may be connected to each other by using a copper bus member.

The bus bar member 11 and the exposed region 1213 of the conductive layer 121 may be connected by soldering, or may be connected by other electrical connection means such as conductive adhesive.

It is understood that the number of the bus bar members 11 may be flexibly adjusted according to the number of the battery cells 20 included in the battery 100, and accordingly, the number of the exposed regions 1213 of the conductive layer 121 may also be flexibly adjusted according to the number of the bus bar members 11, and the number of the bus bar members 11 may be one or more, and accordingly, the number of the exposed regions 1213 of the conductive layer 121 may be one or more.

In the sampling assembly 10 according to the embodiment of the application, the flexible circuit board 12 includes the conductive layer 121 and the first insulating layer 122 covering one side of the conductive layer 121 in the thickness direction, the first insulating layer 122 forms an insulating protection between the conductive layer 121 and the bus member 11, the first insulating layer 122 is provided with the opening 1221 so that the conductive layer 121 includes the exposed region 1213, and the exposed region 1213 of the conductive layer 121 is connected to the bus member 11, compared with a structure in which the conventional flexible circuit board 12 is welded to the bus member 11 through a nickel sheet, in the application, the conductive layer 121 of the flexible circuit board 12 and the bus member 11 are directly connected to form the sampling assembly 10, which avoids influencing the stability of the conductive connection between the flexible circuit board 12 and the bus member 11 due to the easy oxidation of the nickel sheet, thereby effectively improving the performance stability of sampling of the battery 100; and, the conductive layer 121 of the flexible circuit board 12 is connected with the bus bar member 11, effectively simplifying the soldering process.

According to some embodiments of the present application, the exposed region 1213 is welded or glued to the bus member 11.

The exposed region 1213 and the bus member 11 may be connected to each other by welding such as laser welding, ultrasonic welding, or the like, so that the exposed region 1213 and the bus member 11 are electrically connected.

Of course, the exposed region 1213 and the bus bar member 11 may be connected by a gel, and it is understood that the gel should have electrical conductivity, for example, the exposed region 1213 and the bus bar member 11 may be connected by a conductive adhesive.

The exposed area 1213 and the assembly 11 that converges can pass through welding or colloid adhesive bonding connection, and its simple process, connection stability is strong, effectively guarantees to converge the tensile strength after assembly 11 and flexible circuit board 12 are connected, and then effectively guarantees the functional stability of sampling subassembly 10.

According to some embodiments of the present disclosure, please continue to refer to fig. 5, the first insulating layer 122 includes a first insulating layer body 1222 and a first insulating extension 1223 that are integrally formed, the first insulating extension 1223 extends from an edge of the first insulating layer body 1222, and the opening 1221 is disposed on the first insulating extension 1223.

As mentioned above, the conductive layer 121 may include a plurality of exposed regions 1213, and based on the embodiment that "the conductive layer 121 includes a plurality of exposed regions 1213", the first insulating layer 122 may include a plurality of first insulating layer extensions 1223 extending from the first insulating layer body 1222, and each first insulating layer extension 1223 is provided with an opening 1221, so that the conductive layer 121 includes a plurality of exposed regions 1213.

The plurality of first insulating layer extensions 1223 may be distributed at intervals, and a distance between two adjacent first insulating layer extensions 1223 may be flexibly set according to a position of the bus member 11.

The first insulating layer 122 includes the first insulating layer body 1222 and the first insulating layer extension 1223 that are integrally formed, and the opening 1221 is disposed on the first insulating layer extension 1223, such a structure is favorable for satisfying the connection between the exposed region 1213 and the bus bar 11, and simultaneously reducing the coverage area of the sampling assembly 10, thereby reducing the material cost. According to some embodiments of the present disclosure, please refer to fig. 5, fig. 5 is a schematic structural diagram of a flexible circuit board according to some embodiments of the present disclosure, in which the conductive layer 121 includes a conductive layer body 1211 and a conductive layer extension 1212, which are integrally formed, and the conductive layer extension 1212 extends from an edge of the conductive layer body 1211. The first insulating layer body 1222 covers the conductive layer body 1211, and the first insulating layer extension 1223 covers the conductive layer extension 1212.

The shape of the conductive layer body 1211 and the conductive layer extension 1212 may have various implementation structures, and the number of the conductive layer extensions 1212 may be one or more, and the conductive layer extensions 1212 are spaced apart from each other. Accordingly, the shape and size of the first insulating layer body 1222 may match the shape and size of the conductive layer body 1211, the shape and size of the first insulating layer extension 1223 may match the shape and size of the conductive layer extension 1212, and meanwhile, the number of the first insulating layer extensions 1223 is the same as the number of the conductive layer extensions 1212 and the positions thereof are in one-to-one correspondence. The shape of the conductive layer body 1211 may be flexibly configured according to the structure of the battery 100, for example, the conductive layer body 1211 may have a substantially rectangular structure, a square structure, a trapezoid structure, etc., and for example, the battery 100 includes a plurality of battery cells 20 stacked in a first direction, and accordingly, the conductive layer body 1211 may have a rectangular structure extending in the first direction along the length direction or the width direction.

The length of the conductive layer extension 1212 extending from the edge of the conductive layer body 1211 can be flexibly set according to the requirement of the gap between the conductive layer body 1211 and the bus member 11. The shape of the conductive layer extension 1212 may have various embodiments, for example, the conductive layer extension 1212 may have a bar-like structure.

The conductive layer 121 corresponds to the first insulating layer 122 in structure to ensure that the first insulating layer 122 performs a complete insulating protection function on the conductive layer 121, and the conductive layer extension portion 1212 is integrally formed with the conductive layer body 1211 and extends from the edge of the conductive layer body 1211 to be connected to the bus member 11, so as to reduce the coverage area of the conductive layer 121, avoid the flexible circuit board 12 occupying too much installation space of the battery, and effectively save the material cost of the flexible circuit board 12.

Referring to fig. 5, with further reference to fig. 6 and 7, according to some embodiments of the present application, fig. 6 is a schematic partial structural diagram of a sampling assembly provided in some embodiments of the present application, and fig. 7 is an exploded partial structural diagram of the sampling assembly shown in fig. 6. The conductive layer extending portion 1212 includes a collecting portion 1212b and a connecting portion 1212a, the collecting portion 1212b is configured to be connected to the bus bar 11, the connecting portion 1212a is configured to connect the collecting portion 1212b and the conductive layer body 1211, and a width of the collecting portion 1212b is greater than a width of the connecting portion 1212 a.

Specifically, the exposed region 1213 is located at the collecting portion 1212b, and the exposed region 1213 of the collecting portion 1212b is connected to the bus bar member 11.

Accordingly, as shown in fig. 5 and 7, the first insulating layer extension 1223 may include a first extension 1223a and a second extension 1223b, the first extension 1223a connects the second extension 1223b and the first insulating layer body 1222, the first extension 1223a covers the connection portion 1212a, the second extension 1223b covers the collection portion 1212b, and the opening 1221 is disposed on the second extension 1223 b. Wherein, the first extension 1223a may be shaped to fit the connection portion 1212a, and the second extension 1223b may be shaped to fit the collection portion 1212 b.

In other embodiments, when the exposed region 1213 of the collecting portion 1212b is connected to the bus bar 11, the second extending portion 1223b at the periphery of the exposed region 1213 is connected to the bus bar 11 and the conductive layer 121, that is, the second extending portion 1223b can be connected to the bus bar 11, so as to prevent impurities such as moisture from entering the connection region between the exposed region 1213 and the bus bar 11 through the gap between the second extending portion 1223b and the bus bar 11, which may affect the connection stability between the bus bar 11 and the exposed region 1213.

The conductive layer extension portion 1212 includes a collection portion 1212b and a connection portion 1212a, the connection portion 1212a connects the collection portion 1212b and the conductive layer body 1211, a width of the collection portion 1212b is greater than a width of the connection portion 1212a, which is beneficial to ensuring a connection strength between the conductive layer 121 and the bus bar member 11, the width of the connection portion 1212a is smaller than the width of the collection portion 1212b, which is beneficial to further reducing an occupied space of the conductive layer extension portion 1212, so as to provide more space for installing other components of the battery 100.

With continued reference to fig. 5-7, according to some embodiments of the present application, the sampling assembly 10 further includes a sealant 13, the sealant 13 being disposed around the opening 1221.

The sealant 13 is disposed around the opening 1221, i.e., the sealant 13 may be disposed around the opening 1221 in a closed ring structure.

The sealant 13 can be any conventional colloid with waterproof, dustproof, gas-proof and corrosion-proof properties, for example, the sealant 13 can be an insulating sealant, the insulating sealant can be made of epoxy resin, phenolic resin, organic silicon resin, unsaturated polyester resin and the like, the insulating sealant has an insulating and isolating effect while playing a sealing role, and the risk of short circuit of the battery 100 caused by electric leakage of the sealant 13 is reduced.

After the exposed region 1213 and the bus bar 11 are connected, the sealant 13 may be coated on the periphery of the opening 1221 by a glue coating process, it is understood that the sealant 13 may be completely coated between the edge of the opening 1221 and the edge of the first insulating extension 1223, or a part of the sealant 13 may be directly coated on the edge of the first insulating extension 1223.

The sealant 13 is disposed around the opening 1221 to isolate the connection region between the exposed region 1213 and the bus bar 11 from the outside, so as to prevent impurities such as moisture from eroding the connection region between the conductive layer 121 and the bus bar 11 and oxidizing or loosening the connection region, thereby effectively reducing the risk of separation at the connection position between the conductive layer 121 and the bus bar 11, and further effectively improving the connection stability between the conductive layer 121 and the bus bar 11.

According to some embodiments of the present disclosure, please refer to fig. 5 to 7, and further refer to fig. 8, fig. 8 is a schematic diagram illustrating an edge position relationship between the sealant and the first insulating layer extension portion according to some embodiments of the present disclosure, and at least a portion of the sealant 13 is disposed along an edge of the first insulating layer extension portion 1223.

Specifically, the sealant 13 may be entirely disposed along the edge of the first insulating layer extension 1223, or the sealant 13 may be partially disposed along the edge of the first insulating layer extension 1223 and partially extend to the bus member 11, so that the bus member 11 and the edge of the first insulating layer 122 are connected by the sealant 13.

At least one part of the sealant 13 is disposed along the edge of the first insulating layer extension 1223, so that the risk that impurities enter between the first insulating layer 122 and the bus bar 11 or enter between the first insulating layer 122 and the conductive layer 121 and approach to the connection region of the conductive layer 121 and the bus bar 11 through the edge of the first insulating layer extension 1223 is effectively reduced, and the protection effect of the sealant 13 on the connection stability of the conductive layer 121 and the bus bar 11 is further improved.

According to some embodiments of the present application, referring to fig. 5 again, the flexible circuit board 12 further includes a second insulating layer 123, and the second insulating layer 123 covers the other side of the conductive layer 121 in the thickness direction.

It is understood that the second insulating layer 123 may have a structure similar to that of the first insulating layer 122, the second insulating layer 123 is used for protecting and insulating the conductive layer 121, the second insulating layer 123 may have an insulating film structure, and may also be an injection molding having a certain structural strength, and when the second insulating layer 123 adopts an insulating film, the second insulating layer 123 may adopt a PET (Polyethylene Terephthalate) film, a PI (Polyimide) film, or the like.

The flexible circuit board 12 includes a first insulating layer 122 and a second insulating layer 123, the first insulating layer 122 and the second insulating layer 123 respectively cover two opposite sides of the conducting layer 121 in the thickness direction, the first insulating layer 122 and the second insulating layer 123 form a double-sided insulation protection effect on the conducting layer 121, when the sampling assembly 10 is applied to the battery 100, the first insulating layer 122 and the second insulating layer 123 can play an insulation protection role on the conducting layer 121, and prevent the conducting layer 121 from being short-circuited with other parts of the battery 100, so that the safety performance of the sampling assembly 10 is effectively ensured.

According to some embodiments of the present application, referring to fig. 5 again, the conductive layer 121 includes a conductive layer body 1211 and a conductive layer extension 1212 that are integrally formed, the conductive layer extension 1212 extends from an edge of the conductive layer body 1211; the first insulating layer 122 includes a first insulating layer body 1222 and a first insulating layer extension 1223, which are integrally formed, the first insulating layer extension 1223 extends from an edge of the first insulating layer body 1222, the first insulating layer body 1222 covers the conductive layer body 1211, the first insulating layer extension 1223 covers the conductive layer extension 1212, and the opening 1221 is disposed in the first insulating layer extension 1223; the second insulating layer 123 includes a second insulating layer body 1231 and a second insulating layer extension 1232, which are integrally formed, the second insulating layer extension 1232 extends from the edge of the second insulating layer body 1231, the second insulating layer body 1231 covers the conductive layer body 1211, and the second insulating layer extension 1232 covers the conductive layer extension 1212.

As described above, the shape of the conductive layer body 1211 may be flexibly configured according to the structure of the battery 100, for example, the conductive layer body 1211 may have a substantially rectangular structure, a square structure, a trapezoid structure, etc. for example, the battery 100 includes a plurality of battery cells 20 stacked in the first direction, and accordingly, the conductive layer body 1211 may have a rectangular structure extending in the first direction along the length direction or the width direction.

The length of the conductive layer extension 1212 extending from the edge of the conductive layer body 1211 can be flexibly set according to the requirement of the gap between the conductive layer body 1211 and the bus member 11.

The conductive layer 121 may include a plurality of exposed regions 1213, and based on an implementation form that "the conductive layer 121 includes a plurality of exposed regions 1213", the conductive layer 121 may include a plurality of conductive layer extensions 1212 extending from an edge of the conductive layer body 1211, one exposed region 1213 is disposed on each conductive layer extension 1212, the plurality of conductive layer extensions 1212 may be spaced around the circumference of the conductive layer body 1211, and a distance between two adjacent conductive layer extensions 1212 may be flexibly set according to a position of the bus member 11.

The shape of the conductive layer extension 1212 may have various embodiments, for example, the conductive layer extension 1212 may have a bar-like structure.

Accordingly, the shapes and sizes of the first insulating layer body 1222 and the second insulating layer body 1231 may be matched to those of the conductive layer body 1211, the shapes and sizes of the first insulating layer extension 1223 and the second insulating layer extension 1232 may be matched to those of the conductive layer extension 1212, and meanwhile, the number of the first insulating layer extension 1223 and the second insulating layer extension 1232 is the same as that of the conductive layer extensions 1212, and the positions of the first insulating layer extension 1223 and the second insulating layer extension 1232 are in one-to-one correspondence.

The conductive layer 121 is configured to facilitate enlarging a gap between the conductive layer body 1211 and the bus member 11, and facilitate fine adjustment according to an actual size, an installation reserved position, and the like of the battery 100 when the sampling assembly 10 is applied to the battery 100, so that applicability of the sampling assembly 10 and inclusion of a size error are improved; the structures of the first insulating layer 122 and the second insulating layer 123 correspond to the structure of the conductive layer 121, so that the conductive layer 121 is protected from being insulated comprehensively; moreover, the structure of the conductive layer 121, the first insulating layer 122 and the second insulating layer 123 is beneficial to reducing the total coverage area of the flexible circuit board 12, avoiding the flexible circuit board 12 occupying too much installation space of the battery 100, reducing the risk of interference between the flexible circuit board 12 and other parts of the battery 100, and effectively reducing the material cost.

Referring to fig. 9, fig. 9 is a partial perspective view of a flexible circuit board according to some embodiments of the present application. The edge of the first insulating layer 122 and the edge of the second insulating layer 123 both extend beyond the edge of the conductive layer 121, and the edge of the first insulating layer 122 and the edge of the second insulating layer 123 are correspondingly connected.

The edge of the first insulating layer 122 and the edge of the second insulating layer 123 are correspondingly connected, that is, the edge of the first insulating layer 122 and the edge of the second insulating layer 123 are connected with each other at positions opposite to each other in the thickness direction of the conductive layer 121, so that the edge of the conductive layer 121 is wrapped between the first insulating layer 122 and the second insulating layer 123, and the edge of the conductive layer 121 is prevented from extending out of the edge of the first insulating layer 122 and the edge of the second insulating layer 123.

The first insulating layer 122 and the second insulating layer 123 may be a connected structure with edges integrally formed, the first insulating layer 122 and the second insulating layer 123 may also be a separated structure, and then the edges of the first insulating layer 122 and the second insulating layer 123 may be connected to each other by hot melting, hot pressing, or the like.

The edge of the first insulating layer 122 and the edge of the second insulating layer 123 both exceed the edge of the conductive layer 121 and are correspondingly connected, so that the conductive layer 121 is wrapped between the first insulating layer 122 and the second insulating layer 123, and the comprehensiveness of the insulating protection effect of the first insulating layer 122 and the second insulating layer 123 on the non-exposed area of the conductive layer 121 is further improved.

According to some embodiments of the present application, an edge of the first insulating layer 122 and an edge of the second insulating layer 123 each extend 0.25mm to 1mm beyond an edge of the conductive layer 121.

Specifically, as shown in fig. 9, the length dimension of the edge of the first insulating layer 122 or the edge of the second insulating layer 123 beyond the edge of the conductive layer 121 is L, and L is 0.25mm to 1 mm.

The length of the edge of the first insulating layer 122 and the length of the edge of the second insulating layer 123 beyond the edge of the conductive layer 121 may be the same or different, and for example, the length of the edge of the first insulating layer 122 and the length of the edge of the second insulating layer 123 beyond the edge of the conductive layer 121 are the same.

In some embodiments, the edge of the first insulating layer 122 is 0.25mm beyond the edge of the conductive layer 121 and the edge of the second insulating layer 123 is 0.25mm beyond the edge of the conductive layer 121. In other embodiments, the edge of the first insulating layer 122 is 0.5mm beyond the edge of the conductive layer 121 and the edge of the second insulating layer 123 is 0.25mm beyond the edge of the conductive layer 121.

If the edge of the first insulating layer 122 and the edge of the second insulating layer 123 exceed the edge of the conductive layer 121 too much, the coverage area of the flexible circuit board 12 may be increased, and there may be too much redundancy and material cost may be wasted in the edge of the first insulating layer 122 and the edge of the second insulating layer 123, and if the edge of the first insulating layer 122 and the edge of the second insulating layer 123 exceed the edge of the conductive layer 121 too little, they may not be connected to each other effectively to form an insulating cover on the edge of the conductive layer 121, and the edge of the first insulating layer 122 and the edge of the second insulating layer 123 both exceed the edge of the conductive layer 121 by 0.25mm to 1mm, which may effectively ensure to form an insulating cover on the edge of the conductive layer 121 and reduce material cost.

According to some embodiments of the present application, an edge of the first insulating layer 122 and an edge of the second insulating layer 123 each extend 0.25mm to 0.8mm beyond an edge of the conductive layer 121.

Illustratively, the edge of the first insulating layer 122 extends 0.6mm beyond the edge of the conductive layer 121, and the edge of the second insulating layer 123 extends 0.5mm beyond the edge of the conductive layer 121.

The edge of the first insulating layer 122 and the edge of the second insulating layer 123 both exceed the edge of the conductive layer 121 by 0.25mm to 0.8mm, which is beneficial to further ensure that the edge of the conductive layer 121 is fully insulated and covered and simultaneously reduces the material cost.

According to some embodiments of the present application, the thickness of the second insulating layer 123 is 10um to 100 um.

Illustratively, the thickness of the second insulating layer 123 may be 50 um.

The thickness of second insulating layer 123 is 10um to 100um, is favorable to guaranteeing the structural stability of second insulating layer 123 and when its insulating protective effect minimize the thickness and the weight of second insulating layer 123 to be favorable to improving battery 100's energy density and alleviate battery 100's whole weight.

According to some embodiments of the present application, the thickness of the first insulating layer 122 is 10um to 100 um.

Illustratively, the thickness of the second insulating layer 123 may also be 50 um.

The thickness of the first insulating layer 122 is 10um to 100um, which is beneficial to reducing the thickness and weight of the first insulating layer 122 as much as possible while ensuring the structural stability and the insulating protection effect of the first insulating layer 122, thereby being beneficial to improving the energy density of the battery 100 and reducing the overall weight of the battery 100.

According to some embodiments of the present disclosure, referring to fig. 2 to 4 again, the sampling assembly 10 includes a plurality of bus members 11, the first insulating layer 122 is provided with a plurality of openings 1221 such that the conductive layer 121 includes a plurality of exposed regions 1213, and the exposed regions 1213 are correspondingly connected to the plurality of bus members 11.

Specifically, the sampling assembly 10 may include two bus members 11, three bus members 11, or even more bus members 11, the number of bus members 11 being positively correlated with the number of battery cells 20 of the battery 100. Accordingly, the number of exposed areas 1213 may be plural. Illustratively, each sampling assembly 10 includes nine bus members 11, and the conductive layer 121 includes nine exposed regions 1213, and the nine exposed regions 1213 are connected to the nine bus members 11 in a one-to-one correspondence.

The first insulating layer 122 is provided with a plurality of openings 1221 to facilitate the conductive layer 121 of the flexible circuit board 12 to be provided with a plurality of bare areas 1213 to establish a connection relationship with the plurality of bus members 11, thereby facilitating the setting of the sampling assembly 10 to different specifications to be applied to different-scale batteries 100.

Referring to fig. 2 to 9, a sampling assembly 10 according to some embodiments of the present disclosure includes a bus member 11 and a flexible circuit board 12, where the bus member 11 is electrically connected to a battery cell 20, and the flexible circuit board 12 is used for collecting a signal of the battery cell 20. The flexible circuit board 12 includes a conductive layer 121, a first insulating layer 122, and a second insulating layer 123, the first insulating layer 122 covering one side in the thickness direction of the conductive layer 121, and the second insulating layer 123 covering the other side in the thickness direction of the conductive layer 121. The first insulating layer 122 is provided with an opening 1221, and the conductive layer 121 includes a bare region 1213 exposed from the opening 1221, the bare region 1213 being solder-connected to the bus bar member 11.

The conductive layer 121 includes a conductive layer body 1211 and a conductive layer extension portion 1212, which are integrally formed, wherein the conductive layer extension portion 1212 extends from an edge of the conductive layer body 1211; the first insulating layer 122 includes a first insulating layer body 1222 and a first insulating extension 1223, the first insulating extension 1223 extends from an edge of the first insulating layer body 1222, the first insulating layer body 1222 covers the conductive layer body 1211, the first insulating extension 1223 covers the conductive layer extension 1212, and an opening 1221 is disposed in the first insulating extension 1223; the second insulating layer 123 includes a second insulating layer body 1231 and a second insulating layer extension 1232, which are integrally formed, the second insulating layer extension 1232 extends from the edge of the second insulating layer body 1231, the second insulating layer body 1231 covers the conductive layer body 1211, and the second insulating layer extension 1232 covers the conductive layer extension 1212.

According to some embodiments of the present application, there is also provided an electrical device, including the battery 100 according to any of the above aspects, wherein the battery 100 is used for providing electrical energy for the electrical device.

The electric device may be any one of the aforementioned apparatuses or systems using the battery 100.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

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 (17)

1. A sampling assembly, comprising:

a bus member for electrically connecting the battery cells;

the flexible circuit board is used for collecting signals of the battery cells and comprises a conducting layer and a first insulating layer, and the first insulating layer covers one side of the conducting layer in the thickness direction;

the first insulating layer is provided with an opening, the conductive layer includes an exposed area exposed from the opening, and the exposed area is connected with the bus member.

2. The sampling assembly of claim 1, wherein the exposed region is welded or adhesively attached to the bus member.

3. The sampling assembly of claim 1, wherein the first insulating layer comprises an integrally formed first insulating layer body and a first insulating layer extension portion, the first insulating layer extension portion extending from an edge of the first insulating layer body, the opening being disposed in the first insulating layer extension portion.

4. The sampling assembly of claim 3, wherein the conductive layer comprises an integrally formed conductive layer body and a conductive layer extension extending from an edge of the conductive layer body;

the first insulating layer body covers the conductive layer body, and the first insulating layer extension portion covers the conductive layer extension portion.

5. The sampling assembly of claim 4, wherein the conductive layer extension includes a collection portion for connecting with the bus member and a connecting portion for connecting the collection portion with the conductive layer body, the collection portion having a width greater than a width of the connecting portion.

6. The sampling assembly of claim 3, further comprising:

and the sealant is arranged around the opening.

7. The sampling assembly of claim 6, wherein at least a portion of the sealant is disposed along an edge of the first insulating layer extension.

8. The sampling assembly of claim 1, wherein the flexible circuit board further comprises a second insulating layer covering the other side in the thickness direction of the conductive layer.

9. The sampling assembly of claim 8, wherein the conductive layer comprises an integrally formed conductive layer body and a conductive layer extension extending from an edge of the conductive layer body;

the first insulating layer comprises a first insulating layer body and a first insulating layer extension part which are integrally formed, the first insulating layer extension part extends out from the edge of the first insulating layer body, the first insulating layer body covers the conducting layer body, the first insulating layer extension part covers the conducting layer extension part, and the opening is formed in the first insulating layer extension part;

the second insulating layer comprises a second insulating layer body and a second insulating layer extension portion which are integrally formed, the second insulating layer extension portion extends out of the edge of the second insulating layer body, the second insulating layer body covers the conducting layer body, and the second insulating layer extension portion covers the conducting layer extension portion.

10. The sampling assembly of claim 8, wherein an edge of the first insulating layer and an edge of the second insulating layer both extend beyond an edge of the conductive layer, the edges of the first insulating layer and the second insulating layer being correspondingly connected.

11. The sampling assembly of claim 10, wherein an edge of the first insulating layer and an edge of the second insulating layer each extend 0.25mm to 1mm beyond an edge of the conductive layer.

12. The sampling assembly of claim 11, wherein an edge of the first insulating layer and an edge of the second insulating layer each extend 0.25mm to 0.8mm beyond an edge of the conductive layer.

13. The sampling assembly of claim 8, wherein the second insulating layer has a thickness of 10um to 100 um.

14. The sampling assembly of claim 1, wherein the first insulating layer has a thickness of 10 to 100 um.

15. The sampling assembly of any one of claims 1 to 14, wherein the sampling assembly comprises a plurality of said bus members, the first insulating layer being provided with a plurality of said openings such that the conductive layer comprises a plurality of said exposed regions, the plurality of said exposed regions being correspondingly connected to the plurality of said bus members.

16. A battery, comprising:

a battery cell;

the sampling assembly of any one of claims 1 to 15, the bus member being electrically connected to the battery cells.

17. An electrical device comprising a battery as claimed in claim 16 for providing electrical energy.

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