CN217787321U

CN217787321U - Sampling assembly, battery and electric device

Info

Publication number: CN217787321U
Application number: CN202221005731.1U
Authority: CN
Inventors: 谌启财; 王冲; 郑陈铃; 甘卫锋
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-11-11
Anticipated expiration: 2032-04-28
Also published as: WO2023207617A1

Abstract

The application provides a sampling subassembly, battery and electric installation for the sampling subassembly of battery includes: the circuit board is used for collecting electrical parameters of a plurality of single batteries arranged side by side along a first direction, and comprises a first section and a second section, wherein the first section is formed by extending along the first direction, and at least part of the second section is intersected with the first section; the sampling pins are arranged on the circuit board at intervals along a first direction, so that the circuit board can obtain electrical parameters through the sampling pins. In the embodiment of the application, at least part of the second section and the first section are intersected, so that the second section has a deformation allowance in the first direction, and the deformation allowance can support the deformation of the second section in the first direction, thereby reducing the influence of vibration impact on the circuit board.

Description

Sampling assembly, battery and electric device

Technical Field

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

Background

Along with the popularization of the concept of energy conservation and emission reduction, the field of using electric energy as driving energy is more and more, so that the demand of each field on batteries is more and more, and the development of the battery field technology is more and more important to the development of other fields.

In the existing battery sampling process, when the battery is subjected to vibration impact, the battery is also influenced by the vibration, so that the flexible circuit board in the sampling assembly is easily torn away under the influence of the vibration impact during sampling. Therefore, how to reduce the influence of vibration impact on the flexible circuit board during the sampling process of the battery becomes a problem to be solved urgently.

Disclosure of Invention

In view of the above problems, the present application provides a sampling assembly, a battery and an electric device, which can reduce the tearing problem of a flexible circuit board and the pulling and deformation problem of a sampling pin in the sampling process of the battery.

In a first aspect, the present application provides a sampling assembly for a battery, the sampling assembly comprising: the circuit board is used for collecting electrical parameters of a plurality of single batteries arranged side by side along a first direction, and comprises a first section and a second section, wherein the first section is formed by extending along the first direction, and at least part of the second section is intersected with the first section; and the sampling pins are arranged on the first section at intervals along the first direction so that the circuit board can obtain the electrical parameters through the sampling pins.

In the technical scheme of this application embodiment, the sampling subassembly includes circuit board and sampling pin, and the sampling pin is used for acquireing the free electric parameter of battery, and the circuit board is used for transmitting this electric parameter. The circuit board comprises a first section and a second section, wherein at least part of the second section intersects with the first section, so that at least part of the second section intersects with the first direction, and the second section has a deformation allowance in the first direction, and the deformation allowance can support the deformation of the second section in the first direction. When a plurality of battery monomers that set up side by side in the first direction receive different vibration impacts, the second segmentation can produce the deformation to this absorbs partial vibration impact, improves the vibration impact and to the first segmentation and set up in the influence of the sampling pin of first segmentation, guarantees the stability of relative position between first segmentation and the sampling pin, and the stability of sampling pin and battery monomer relative position, protects this and samples the pin and can normally obtain the electrical parameter, improves the reliability of sampling subassembly.

In some embodiments, two first segments are connected to the second segment on either side in the first direction. Through connecting two first subsections in the both sides of second subsection on first direction, can reduce the influence of vibration impact to the circuit board and the sampling pin of the first subsection of both sides.

In some embodiments, the second segment includes a first portion, a second portion and a connecting segment connecting the first portion and the second portion, which are spaced apart along the first direction. The first part, the second part and the connecting section for connecting the first part and the second part are arranged on the second section at intervals along the first direction, so that the second section can better absorb vibration and impact.

In some embodiments, at least part of the first part and the connecting section are arranged in a stacked manner in the thickness direction of the circuit board, and/or at least part of the second part and the connecting section are arranged in a stacked manner in the thickness direction of the circuit board, so that the second section can be formed by folding the circuit board profile. By arranging part of the first part and the connecting section in a stacking mode, and/or arranging part of the second part and the connecting section in a stacking mode, the second section can be formed by folding the circuit board section with the same width, the folded part can improve the deformation allowance of the second section, and the deformation allowance can better support the deformation of the second section in the first direction to absorb part of vibration impact.

In some embodiments, the sampling assembly further comprises: an insulating member for supporting the circuit board; the reinforcing part is arranged on one side, away from the insulating part, of the circuit board, at least part of the reinforcing part extends out of the circuit board along a second direction and is connected with the insulating part, and the second direction is intersected with the first direction. The circuit board is supported by adding the insulating member to reduce bending deformation of the circuit board in the thickness direction of the insulating member. Through set up reinforcement portion on the circuit board to connect reinforcement portion in the insulating part, reinforcement portion can consolidate the connection of circuit board and insulating part, reduces the relative displacement of circuit board and insulating part.

In some embodiments, the at least one reinforcement is located between the at least one sampling pin and the second segment. The influence of vibration impact on the sampling pin arranged on the first section is reduced by arranging at least one reinforcing part between at least one sampling pin and the second section.

In some embodiments, the number of the reinforcing parts is two or more, and the two or more reinforcing parts are provided on both sides of the second segment in the first direction. The reinforcing parts are respectively arranged on the two sides of the second section in the first direction, so that the deformation of the first section on the two sides of the second section when the vibration impact is applied to the first section is reduced.

In some embodiments, the insulation member has a relief hole formed therein, and the second segment is disposed around at least a portion of the relief hole. Through seting up the hole of stepping down on the insulating part to this makes things convenient for the mount battery, through encircleing at least part hole of stepping down with the second segmentation, influence when in order to reduce the second segmentation and receive the battery mount.

In some embodiments, the sampling assembly further includes a bus bar for connecting electrode terminals of the battery cells, the sampling pins being connected between the bus bar and the circuit board. Through setting up the piece that converges to link to the piece that converges and the free electrode terminal of battery and sampling pin, make the piece that converges can assemble the free electrode terminal of a plurality of batteries, and make the sampling pin can obtain the electrical parameter through the piece that converges.

In a second aspect, the present application provides a battery comprising a sampling assembly according to any one of the above.

In some embodiments, the battery further includes an outer frame for accommodating the battery cell; the limiting piece is positioned in the outer frame and used for dividing the outer frame into more than two accommodating spaces which are arranged side by side along the first direction, and the second direction is intersected with the first direction; in the sampling assembly, the second section of the circuit board is arranged across the limiting piece along the first direction. Through setting up the locating part, the locating part can limit the free removal of battery in the accommodation space to a certain extent, sets up through striding the locating part with the second segmentation along first direction to make the second segmentation can absorb the free vibration impact of different batteries that are located the locating part both sides.

In a third aspect, the present application provides an electrical device comprising a battery according to any one of the above, the battery being for providing electrical energy.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

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

fig. 3 is a schematic structural diagram of a battery module according to an embodiment of the present application;

fig. 4 is an exploded view of a battery cell according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a sampling assembly for a battery according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram illustrating a connection between a first segment and a second segment of a sampling assembly according to an embodiment of the present application;

FIG. 7 is a schematic diagram illustrating a connection between a first segment and a second segment of another sampling assembly provided in an embodiment of the present application;

FIG. 8 is a schematic diagram illustrating a connection between a first segment and a second segment of a sampling assembly according to an embodiment of the present application;

fig. 9 is an exploded view of a battery cell and sampling assembly according to an embodiment of the present disclosure;

fig. 10 is a schematic connection diagram of a circuit board, a sampling pin and a reinforcing part according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a battery according to an embodiment of the present application.

The reference numbers in the detailed description are as follows:

1 vehicle, 10 battery, 11 controller, 12 motor;

20 battery modules, 21 battery cells, 211 end caps, 211a electrode terminals, 212 cases, 213 electrode assemblies;

30 boxes, 301 first box parts, 302 second box parts;

40 sample assembly, 41 circuit board, 411 first section, 412 second section, 412a first part, 412b second part, 412c connection section, 42 sample pin, 43 reinforcement, 44 insulation, 441 abdication hole, 45 bus;

51 outer frame, 52 stopper.

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.

It should be noted that technical terms or scientific terms used in the embodiments of the present application should be understood as having a common meaning as understood by those skilled in the art to which the embodiments of the present application belong, unless otherwise specified.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, merely for convenience of description and simplified description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the technical terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; mechanical connection or electrical connection is also possible; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. 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 description of the embodiments of the present application, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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.

The applicant has noticed that as the usage of the batteries increases, the sampling stability of the batteries and the structural reliability of the sampling assembly are also more and more important. When the sampling subassembly for the battery samples the free electrical parameter of battery, if the battery receives vibration impact, the vibration impact strength or the frequency that the battery monomer of different positions received in the battery may be inconsistent for circuit board and sampling pin receive the dragging because of the influence of vibration impact, the circuit board condition torn and sampling pin fracture appears even, lead to the reliability reduction of sampling subassembly, and seriously influenced the stability of battery sampling.

To alleviate the problem of the impact of the vibration shock on the sampling assembly, applicants have discovered that a deformation section may be provided on the circuit board in the sampling assembly, such as the circuit board being divided into a first section and a second section. Specifically, the first section is formed by extending along a first direction, the sampling pin is arranged on the first section, and at least part of the second section is intersected with the first section.

In such a sampling assembly, at least a portion of the second segment intersects the first direction due to the intersection of the at least a portion of the second segment with the first segment, such that the second segment has a deformation margin in the first direction that supports deformation of the second segment in the first direction. When a plurality of battery monomers that set up side by side in the first direction receive the vibration impact promptly, the second subsection in the circuit board can produce and warp and absorb partial vibration impact, improves the vibration impact to first subsection and set up in the influence of the sampling pin of first subsection, guarantees the stability of relative position between first subsection and the sampling pin, and the stability of sampling pin and battery monomer relative position to this improves the reliability of sampling subassembly, and stability when having improved the battery sampling.

The embodiment of the application provides a sampling assembly, a battery comprising the sampling assembly and an electric device using the battery. Such a sampling assembly is applicable to any battery, such as battery modules and battery packs, or primary and secondary batteries, including, for example, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid (or lead-storage) batteries, lithium ion batteries, sodium ion batteries, polymer batteries, and the like. The battery is suitable for various electric equipment using the battery, such as mobile phones, portable equipment, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships, spacecrafts and the like, and the spacecrafts comprise airplanes, rockets, spacecrafts and the like; the battery is used for providing electric energy for the electric equipment.

The electric device provided by the embodiment of the application can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool and the like. The vehicle can be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like; spacecraft include aircraft, rockets, space shuttles, and spacecraft, among others; the electric toys include stationary or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric airplane toys, and the like; the electric power tools include metal cutting electric power tools, grinding electric power tools, assembly electric power tools, and electric power tools for railways, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, electric impact drills, concrete vibrators, and electric planers. The embodiment of the present application does not particularly limit the above power utilization apparatus.

It should be understood that the technical solutions described in the embodiments of the present application are not limited to be applied to the above-described battery and electric equipment, but may be applied to all batteries including a box and electric equipment using the battery.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1 according to some embodiments of the present disclosure. The vehicle 1 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like. The interior of the vehicle 1 is provided with a battery 10, and the battery 10 may be provided at the bottom or at the head or tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, and for example, the battery 10 may serve as an operation power source of the vehicle 1. The vehicle 1 may further include a controller 11 and a motor 12, the controller 11 being configured to control the battery 10 to power the motor 12, for example, for start-up, navigation, and operational power requirements while the vehicle 1 is traveling.

In some embodiments of the present application, the battery 10 may be used not only as an operating power source of the vehicle 1, but also as a driving power source of the vehicle 1, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1.

In order to meet different power requirements, the battery 10 may include a plurality of battery cells 21, and the battery cells 21 refer to the smallest unit constituting the battery module 20 or the battery pack. A plurality of battery cells 21 may be connected in series and/or in parallel via electrode terminals to be applied to various applications. The battery 10 referred to in the present application includes a battery module 20 or a battery pack. The plurality of battery cells 21 may be connected in series, in parallel, or in series-parallel, where series-parallel refers to a mixture of series connection and parallel connection. In the embodiment of the application, a plurality of battery cells may directly form a battery pack, or may first form the battery module 20, and then the battery module 20 forms the battery pack.

Fig. 2 shows a schematic structural diagram of the battery 10 according to an embodiment of the present application.

As shown in fig. 2, the battery 10 includes a case 30 and a battery cell (not shown), which is accommodated in the case 30.

The box body 30 may be a single cuboid, a cylinder, a sphere, or other simple three-dimensional structure, or may be a complex three-dimensional structure formed by combining a cuboid, a cylinder, a sphere, or other simple three-dimensional structures, which is not limited in the embodiment of the present application. The material of the box 30 may be an alloy material such as an aluminum alloy and an iron alloy, a polymer material such as polycarbonate and polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin, which is not limited in the embodiment of the present application.

The case 30 is used to accommodate the battery cells, and the case 30 may have various structures. In some embodiments, the box body 30 may include a first box body portion 301 and a second box body portion 302, the first box body portion 301 and the second box body portion 302 cover each other, and the first box body portion 301 and the second box body portion 302 jointly define a receiving space for receiving the battery cells. The second casing part 302 may be a hollow structure with one open end, the first casing part 301 is a plate-shaped structure, and the first casing part 301 covers the open side of the second casing part 302 to form the casing 30 with a containing space; the first casing portion 301 and the second casing portion 302 may be hollow structures with one side open, and the open side of the first casing portion 301 covers the open side of the second casing portion 302 to form the casing 30 having the accommodating space. Of course, the first tank portion 301 and the second tank portion 302 may be various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In order to improve the sealing property after the first casing portion 301 and the second casing portion 302 are connected, a sealing member, such as a sealant or a sealing ring, may be provided between the first casing portion 301 and the second casing portion 302.

Assuming that the first box portion 301 covers the top of the second box portion 302, the first box portion 301 may also be referred to as an upper box cover, and the second box portion 302 may also be referred to as a lower box cover.

In the battery 10, one or more battery cells may be provided. If the number of the battery monomers is multiple, the multiple battery monomers can be connected in series or in parallel or in series-parallel, and the series-parallel refers to that the multiple battery monomers are connected in series or in parallel. The plurality of battery cells can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery cells is accommodated in the box body 30; of course, a plurality of battery cells may be connected in series, in parallel, or in series-parallel to form the battery module 20, and a plurality of battery modules 20 may be connected in series, in parallel, or in series-parallel to form a whole, and may be accommodated in the box 30.

Fig. 3 shows a schematic structural diagram of the battery module 20 according to an embodiment of the present application.

In some embodiments, as shown in fig. 3, there are a plurality of battery cells 21, and the plurality of battery cells 21 are connected in series or in parallel or in series-parallel to form the battery module 20. The plurality of battery modules 20 are connected in series or in parallel or in series-parallel to form a whole, and are accommodated in the case.

The plurality of battery cells 21 in the battery module 20 may be electrically connected to each other by a bus member, so as to connect the plurality of battery cells 21 in the battery module 20 in parallel, in series, or in series-parallel.

In this application, the battery cells 21 may include a lithium ion battery cell, a sodium ion battery cell, a magnesium ion battery cell, or the like, which is not limited in this application. The battery cell 21 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 21 are generally divided into three types in an encapsulated manner: the battery pack comprises a cylindrical battery cell 21, a square battery cell 21 and a soft package battery cell 21, and the embodiment of the application is not limited to this. However, for the sake of simplicity, the following embodiments are all described by taking the square battery cell 21 as an example.

Fig. 4 is an exploded schematic view of a battery cell 21 according to some embodiments of the present disclosure. The battery cell 21 refers to the smallest unit constituting the battery. As shown in fig. 4, the battery cell 21 includes an end cap 211, a case 212, and an electrode assembly 213.

The end cap 211 refers to a member that covers an opening of the case 212 to isolate the internal environment of the battery cell 21 from the external environment. Without limitation, the shape of the end cap 211 may be adapted to the shape of the housing 212 to fit the housing 212. Alternatively, the end cap 211 may be made of a material (e.g., an aluminum alloy) having a certain hardness and strength, so that the end cap 211 is not easily deformed when being impacted, and thus the battery cell 21 may have a higher structural strength and the safety performance may be improved. The end cap 211 may be provided with functional parts such as the electrode terminal 211 a. The electrode terminal 211a may be used to be electrically connected with the electrode assembly 213 for outputting or inputting electric energy of the battery cell 21. In some embodiments, the end cap 211 may further include a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold value. The material of the end cap 211 may also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this application. In some embodiments, insulation may also be provided on the inside of end cap 211, which may be used to isolate electrically connected components within housing 212 from end cap 211 to reduce the risk of shorting. Illustratively, the insulator may be plastic, rubber, or the like.

The case 212 is an assembly for fitting the end cap 211 to form an internal environment of the battery cell 21, wherein the formed internal environment may be used to house the electrode assembly 213, an electrolyte (not shown in the drawings), and other components. The housing 212 and the end cap 211 may be separate components, and an opening may be formed in the housing 212, and the opening may be covered by the end cap 211 to form the internal environment of the battery cell 21. Without limitation, the end cap 211 and the housing 212 may be integrated, and specifically, the end cap 211 and the housing 212 may form a common connecting surface before other components are inserted into the housing, and when it is required to enclose the inside of the housing 212, the end cap 211 covers the housing 212. The housing 212 may be a variety of shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case 212 may be determined according to the specific shape and size of the electrode assembly 213. The material of the housing 212 may be various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this embodiment.

The electrode assembly 213 is a component of the battery cell 21 where electrochemical reactions occur. One or more electrode assemblies 213 may be contained within the housing 212. The electrode assembly 213 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally disposed between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode tabs having the active material constitute the body portion of the electrode assembly 213, and the portions of the positive and negative electrode tabs having no active material each constitute a tab (not shown in the drawings). The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or at both ends of the main body portion, respectively. During the charge and discharge of the battery 10, the positive and negative active materials react with the electrolyte, and the tabs are connected to the electrode terminals 211a to form a current loop.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a sampling assembly 40 for a battery 10 according to an embodiment of the present application, in which an X-axis direction is a first direction and a Y-axis direction is a second direction. The sampling assembly 40 includes a circuit board 41 and a sampling pin 42 provided to the circuit board 41. The circuit board 41 is used for acquiring electrical parameters of a plurality of battery cells 21 arranged side by side along a first direction X, and the circuit board 41 includes a first section 411 and a second section 412, wherein the first section 411 extends along the first direction X, and at least a part of the second section 412 intersects with the first section 411. A plurality of sampling pins 42 are disposed at intervals in the first section 411 along the first direction X, so that the circuit board 41 acquires electrical parameters through the sampling pins 42.

In the technical solution of the embodiment of the present application, the sampling component includes a circuit board 41 and a sampling pin 42, the sampling pin 42 is used to obtain an electrical parameter of the battery cell 21, and the circuit board 41 is used to transmit the electrical parameter. The circuit board 41 includes a first section 411 and a second section 412, and at least a part of the second section 412 intersects the first section 411, so that at least a part of the second section 412 intersects the first direction X, so that the second section 412 has a deformation margin in the first direction X, and at least a part of the second section 412 may extend in the second direction Y and/or the third direction Z, the deformation margin being capable of supporting the deformation of the second section 412 in the first direction X. The second section 412 may be dog-legged or curved. That is, the extending path of the second segment 412 is disposed to be protruded from the first segment 411 along the second direction Y and/or the third direction Z. When a plurality of battery cells 21 arranged side by side in the first direction X are subjected to different vibration impacts, the second section 412 can deform to absorb part of the vibration impacts, the influence of the vibration impacts on the first section 411 and the sampling pin 42 arranged on the first section 411 is improved, the stability of the relative position between the first section 411 and the sampling pin 42 and the stability of the relative position between the sampling pin 42 and the battery cells 21 are ensured, the sampling pin 42 is protected from normally obtaining the electrical parameters, and the reliability of the sampling assembly 40 is improved.

According to some embodiments of the present application, optionally, please continue to refer to fig. 5, two first segments 411 are connected to two sides of the second segment 412 in the first direction X.

In these embodiments, by connecting two first segments 411 to two sides of the second segment 412 in the first direction X, when the first segments 411 at two ends of the second segment 412 and the sampling pins 42 on the first segments 411 are subjected to vibration impact, the second segment 412 can absorb part of the vibration impact at two ends, thereby reducing the influence of the vibration impact on the circuit boards 41 and the sampling pins 42 of the first segments 411 at two ends.

Alternatively, in order to reduce the influence of the vibration impact on the whole circuit board 41, the circuit board 41 may include a plurality of first segments 411 and second segments 412, and the first segments 411 and the second segments 412 are alternately arranged in the extending direction of the circuit board 41. The specific extending direction of the circuit board 41, the number and length of the first segments 411, and the number and length of the second segments 412 can be set according to the actual structure of the battery 10, and the setting is subject to the requirements that the second segments 412 can absorb part of the vibration impact on the battery 10, and the requirements that the influence of the vibration impact on the circuit board 41 and the sampling pins 42 is reduced.

According to some embodiments of the present application, optionally, please refer to fig. 5 to 8, fig. 6 is a schematic connection diagram of a first segment 411 and a second segment 412 in a sampling assembly 40 provided in an embodiment of the present application, fig. 7 is a schematic connection diagram of a first segment 411 and a second segment 412 in another sampling assembly 40 provided in an embodiment of the present application, and fig. 8 is a schematic connection diagram of a first segment 411 and a second segment 412 in another sampling assembly 40 provided in an embodiment of the present application. The Z-axis direction in the figure is the third direction Z, which is the thickness direction of the first segment 411. To further illustrate the shape of the second segment 412, the second segment 412 may be divided into a plurality of parts for specific illustration, but for the sake of brevity, the shape of the second segment 412 will be described below by taking the second segment 412 as an example of being divided into three parts.

Optionally, the second segment 412 includes a first portion 412a, a second portion 412b spaced apart along the first direction X, and a connecting segment 412c connecting the first portion 412a and the second portion 412b.

In these embodiments, by providing the first portion 412a, the second portion 412b and the connecting section 412c connecting the first portion and the second portion on the second section 412 at intervals along the first direction X, the second section 412 can better absorb the vibration impact.

When the circuit board 41 and the sampling pin 42 are subjected to a vibration impact, optionally, the first portion 412a and the second portion 412b may be mainly used to support the deformation of the second section 412 in the first direction X, for example, the first portion 412a and the second portion 412b are close to or far away from each other to enable the deformation of the second section 412 in the first direction X. That is, when the second section 412 is deformed by the impact of vibration, the main deformation portions are the first portion 412a and the second portion 412b. The connecting portion 412c may be mainly used to connect the first portion 412a and the second portion 412b, and generate corresponding adaptive deformation along with the deformation of the first portion 412a and the second portion 412b, so as to reduce the possibility that the first segment 411 is torn when the battery cell vibrates.

As shown in fig. 8, in order to allow the second section 412 to retain more deformable margin, optionally, the first portion 412a may itself include one or more bends and/or bends, the second portion 412b may itself include one or more bends and/or bends, and the connecting portion 412c may include one or more bends and/or bends. These bent sections and/or bent sections may enable the second section 412 to have more deformable margin within a certain length in the first direction X, so that the second section 412 can generate more deformation when encountering a vibration impact, so as to absorb more vibration impact, and further reduce the influence of the vibration impact on the circuit board 41 and the sampling pin 42.

According to some embodiments of the present application, optionally, referring to fig. 5, at least a portion of the first portion 412a and the connecting section 412c are stacked in a thickness direction of the circuit board 41, and/or at least a portion of the second portion 412b and the connecting section 412c are stacked in the thickness direction of the circuit board 41, so that the second section 412 can be formed by folding a circuit board profile.

In these embodiments, by stacking part of the first portion 412a with the connecting section 412c, and/or stacking part of the second portion 412b with the connecting section 412c, so that the second section 412 can be formed by folding the equal-width circuit board profile, the folded part can improve the deformation margin of the second section 412, so that the deformation margin can better support the deformation of the second section 412 in the first direction X to absorb part of the vibration impact. The folded portion also reduces the height of the second section 412 in the third direction Z, so that the structure of the circuit board 41 is more compact and reliable.

Alternatively, the circuit board 41 may be a flexible printed circuit board or other flexible circuit board, so that the second section 412 in the circuit board 41 is more easily deformed, thereby improving the efficiency of the second section 412 in absorbing the shock.

According to some embodiments of the present application, optionally, please continue to refer to fig. 5 and 9, fig. 9 is an exploded view of a battery cell and a sampling assembly provided by an embodiment of the present application. The sampling assembly 40 further includes an insulating member 44 and reinforcing portions 43, the insulating member 44 is used for supporting the circuit board 41, at least one reinforcing portion 43 is disposed on a side of the circuit board 41 facing away from the insulating member 44, and at least a portion of the reinforcing portion 43 extends out of the circuit board 41 along the second direction Y and is connected to the insulating member 44.

In these embodiments, by adding the insulating member 44 to support the circuit board 41, the bending deformation of the circuit board 41 in the thickness direction of the insulating member 44 can be reduced. By providing the reinforcing portion 43 on the circuit board 41 and connecting the reinforcing portion 43 to the insulating member 44, the reinforcing portion 43 can reinforce the connection between the circuit board 41 and the insulating member 44, and reduce the relative displacement between the circuit board 41 and the insulating member 44.

Alternatively, the material of the insulating member 44 may be epoxy resin. The insulating member 44 may be provided with a groove (not shown) for receiving or fixing the circuit board 41 to further reduce the displacement of the circuit board 41 during vibration.

Alternatively, as shown in fig. 9, the reinforcing part 43 may be connected to the first section 411 in the circuit board 41, the connection manner of the reinforcing part to the first section 411 may be adhesion, and the number and distribution positions of the reinforcing part 43 on the first section 411 are not limited. For example, at least one reinforcement 43 is disposed on a side of the first section 411 facing away from the insulator 44, and the reinforcement 43 may also be disposed on a side of the first section 411 facing the insulator 44. The two sides of the first section 411 away from and facing the insulating member 44 are provided with reinforcing portions 43, and the portions of the upper and lower reinforcing portions 43 extending out of the circuit board 41 in the second direction Y are connected to the insulating member 44.

According to some embodiments of the present application, optionally, please refer to fig. 10, where fig. 10 is a schematic connection diagram of a circuit board 41, a sampling pin 42, and a reinforcing part 43 according to an embodiment of the present application. At least one reinforcement 43 is located between the at least one sampling pin 42 and the second section 412.

In these embodiments, by providing at least one reinforcement 43 between at least one sampling pin 42 and the second section 412, the influence of vibration impact on the sampling pin 42 provided on the first section 411 can be reduced.

According to some embodiments of the present application, optionally, please continue to refer to fig. 10, the number of the reinforcing portions 43 is two or more, and the two or more reinforcing portions 43 are disposed on two sides of the second section 412 in the first direction X.

In these embodiments, the deformation of the first section 411 on both sides of the second section 412 when it is subjected to vibration impact is reduced by providing the reinforcing portions 43 on both sides in the first direction X.

According to some embodiments of the present application, optionally, referring to fig. 5, the insulation member 44 is formed with a yielding hole 441, and the second segment 412 is disposed around at least a portion of the yielding hole 441.

In these embodiments, the insulation member 44 is provided with a relief hole 441 to facilitate mounting of the battery 10, and the second section 412 surrounds at least a portion of the relief hole 441 to reduce an influence of the battery 10 on mounting of the second section 412. Alternatively, the specific shape of the receding hole 441 is not limited, the shape of the receding hole 441 may be circular, square or other irregular shapes, and the specific shape of the receding hole 441 is determined according to the requirement of conveniently mounting the battery 10. Optionally, the specific setting position of the yielding hole 441 is not limited, for example, the battery includes an outer frame and a limiting member located in the outer frame, the limiting member is used to separate the outer frame into two or more accommodating spaces, a battery cell is provided in each accommodating space, the yielding hole 441 can be disposed on the limiting member, so that the stress of the battery is more balanced, and the specific setting position of the yielding hole 441 is accurate to meet the requirement of the sampling work without interfering with the sampling assembly 40.

In these embodiments, a portion of the circuit board 41 near the escape hole 441 may be provided as the second section 412. Optionally, a second segment 412 positioned adjacent to the relief hole 441 may be disposed around at least a portion of the relief hole 441. When the second segment 412 surrounds the abdicating hole 441, the outer contour of the second segment 412 facing the abdicating hole 441 is disposed around at least a portion of the abdicating hole 441, and the outer contour of the second segment 412 facing the abdicating hole 441 does not intersect with the outer contour of the abdicating hole 441. The shape of the second section 412 is not limited, and the second section 412 may include a partial bending section and/or a bending section, so that the second section 412 is better arranged around at least a part of the receding hole 441, so that the structure of the circuit board 41 is more compact.

According to some embodiments of the present application, optionally, with continued reference to fig. 5, the sampling assembly 40 further includes a bus bar 45 for connecting the electrode terminals 211a of the battery cells 21, and the sampling pin 42 is connected between the bus bar 45 and the circuit board 41.

In these embodiments, by providing the bus bar 45 and connecting the bus bar 45 with the electrode terminals 211a of the battery cells 21 and the sampling pins 42, the bus bar 45 is enabled to collect the electrode terminals 211a of the plurality of battery cells 21, and the sampling pins 42 are enabled to acquire the electrical parameters through the bus bar 45.

Optionally, the sampling pin 42 and the confluence piece 45 may be connected by laser welding, ultrasonic welding, friction stir welding, or the like, and the confluence piece 45 and the battery cells 21 may be connected by laser welding, ultrasonic welding, friction stir welding, or the like, so as to fix the relative positions of the sampling pin 42, the confluence piece 45, and the battery cells 21, and improve the reliability and stability of the sampling pin 42 when collecting the electrical parameters of the plurality of battery cells 21 through the confluence piece 45.

Alternatively, the bus bar 45 may be connected to the insulating member 44, whereby the insulating member 44 may restrict the relative movement generated between the first section 411 and the bus bar 45 to some extent. Optionally, the insulating member 44 may be provided with a corresponding limiting groove (not shown) for accommodating or fixing the bus bar 45, so as to further limit the relative movement between the first segment 411 and the bus bar 45.

According to some embodiments of the present application, there is also provided a battery comprising the sampling assembly 40 of any of the above aspects.

Referring to fig. 11, according to some embodiments of the present application, fig. 11 is a schematic structural diagram of a battery according to an embodiment of the present application. Optionally, the battery further comprises: an outer frame 51 for accommodating the battery cells 21; the limiting piece 52 is formed by extending along the second direction Y, the limiting piece 52 is located in the outer frame 51 and is used for dividing the outer frame 51 into more than two accommodating spaces which are arranged side by side along the first direction X, and the second direction Y is intersected with the first direction X; in the sampling assembly, the second section of the circuit board is arranged across the limiting piece along the first direction X.

In these embodiments, the limiting member is disposed to limit movement of the battery cells in the accommodating space to a certain extent, and the second segment is disposed across the limiting member along the first direction X, so that the second segment can absorb vibration and impact of different battery cells located on two sides of the limiting member.

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

The powered device may be any of the aforementioned battery-powered devices or systems.

According to some embodiments of the present application, referring to fig. 5 to 10, the present application provides a sampling assembly 40, wherein the sampling assembly 40 includes a circuit board 41, a sampling pin 42, a reinforcing portion 43, an insulating member 44, and a bus bar 45. Wherein the sampling pin 42 is connected to the bus bar 45, and the sampling pin 42 is used for acquiring the electrical parameter. The circuit board comprises a first section 411 and a second section 412, the first section 411 extends along the first direction X to be formed, the sampling pins 42 are arranged on the first section 411 at intervals along the first direction X, the first section 411 and at least part of the second section 412 are arranged in an intersecting mode, and two sides of one second section 412 in the first direction X are connected with the first section 411. The second segment 412 includes a first portion 412a, a second portion 412b, and a connecting segment 413c connecting the first portion 412a and the second portion 412b, at least a portion of the first portion 412a and the connecting segment 412c being stacked in the third direction Z, and at least a portion of the second portion 412b and the connecting segment 412c being stacked in the third direction Z. The insulating member 44 is used for supporting the circuit board 41, the insulating member 44 is provided with a relief hole 441, and the second section 412 is arranged around at least part of the relief hole 441. The number of the reinforcing portions 43 is two or more, at least one reinforcing portion 43 is disposed on a side of the circuit board 41 away from the insulating member 44, at least a portion of the reinforcing portion 43 extends out of the circuit board 41 along the second direction Y and is connected to the insulating member 44, the at least one reinforcing portion 43 is located between the at least one sampling pin 42 and the second section 412, and the at least two reinforcing portions 43 are disposed on two sides of the second section 412 in the first direction X.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein, but rather to cover all embodiments falling within the scope of the appended claims.

Claims

1. A sampling assembly for a battery, comprising:

the circuit board is used for collecting electrical parameters of a plurality of battery cells arranged side by side along a first direction, and comprises a first section and a second section, wherein the first section extends and is formed along the first direction, and at least part of the second section is intersected with the first section;

and the sampling pins are arranged on the first section at intervals along the first direction, so that the circuit board can obtain the electrical parameters through the sampling pins.

2. The sampling assembly of claim 1, wherein two of the first segments are connected to the second segment on either side in the first direction.

3. The sampling assembly of claim 1, wherein the second segment includes first portions, second portions spaced apart along the first direction, and a connecting segment connecting the first portions and the second portions.

4. The sampling assembly of claim 3, wherein at least a portion of the first portion is stacked with the connection section in a thickness direction of the circuit board, and/or at least a portion of the second portion is stacked with the connection section in the thickness direction of the circuit board, such that the second section is foldable from a circuit board profile.

5. The sampling assembly of claim 1, further comprising:

an insulating member for supporting the circuit board;

the reinforcing part is arranged on one side, away from the insulating part, of the circuit board, at least part of the reinforcing part extends out of the circuit board along a second direction and is connected with the insulating part, and the second direction is intersected with the first direction.

6. The sampling assembly of claim 5, wherein at least one of the reinforcements is located between at least one of the sampling pins and the second section.

7. The sampling assembly of claim 6, wherein the number of the reinforcing portions is two or more, and two or more of the reinforcing portions are provided on both sides of the second segment in the first direction.

8. The sampling assembly of any one of claims 5-7, wherein the insulator has a relief hole formed therein, and wherein the second segment is disposed around at least a portion of the relief hole.

9. The sampling assembly of any one of claims 5-7, further comprising a bus bar for connecting electrode terminals of the battery cells, the sampling pin being connected between the bus bar and the circuit board.

10. A battery, comprising: the sampling assembly of any one of claims 1 to 9.

11. The battery of claim 10, further comprising:

the outer frame is used for accommodating the battery monomer;

the limiting piece is positioned in the outer frame and used for dividing the outer frame into more than two accommodating spaces which are arranged side by side along the first direction, and the second direction is intersected with the first direction;

in the sampling assembly, the second section of the circuit board is arranged across the limiting piece along the first direction.

12. An electric consumer, characterized in that the consumer comprises a battery according to any of claims 10-11 for providing electric energy.