CN216850249U

CN216850249U - Battery and power consumption device

Info

Publication number: CN216850249U
Application number: CN202123372138.9U
Authority: CN
Inventors: 林志全; 孙阳阳; 林志强
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-28
Anticipated expiration: 2031-12-29

Abstract

The application discloses battery and power consumption device. The battery includes: the battery monomer, be used for with the part that converges that the battery monomer electricity is connected, it keeps away from to converge the part the free one side of battery is equipped with the bulge, and is used for gathering the free temperature of battery or voltage signal's signal acquisition terminal, the signal acquisition terminal includes buckle structure, buckle structure with the bulge is followed the free direction of height of battery can dismantle the connection. The battery of this application embodiment sets up the bulge and sets up buckle structure at the signal acquisition terminal through setting up the bulge on the part that converges for when part or signal acquisition terminal break down converging, can realize the dismantlement on the free direction of height of battery, thereby only change the part that breaks down, thereby avoided scrapping of whole battery module, and then promoted the life of battery.

Description

Battery and power consumption device

Technical Field

The application relates to the field of batteries, in particular to a battery and a power utilization device.

Background

In the power battery module, the temperature and the voltage of the battery cell are often acquired by contacting a signal acquisition terminal on a circuit board with a bus component on the battery cell. In the prior art, the signal acquisition terminal and the bus bar part are usually fixed in a welding or riveting mode, and when one of the signal acquisition terminal and the bus bar part breaks down, the signal acquisition terminal and the bus bar part need to be scrapped together with a battery module, so that the service life of the battery is greatly influenced. Therefore, how to increase the service life of the battery becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides a battery and a power consumption device, which can solve the problem of the service life of the battery.

In a first aspect, the present application provides a battery comprising: a battery cell; the bus-bar component is used for being electrically connected with the battery monomer, and a protruding part is arranged on one side of the bus-bar component, which is far away from the battery monomer; the signal acquisition terminal is used for acquiring the temperature or voltage signal of the battery monomer, the signal acquisition terminal comprises a buckle structure, and the buckle structure and the protruding part are detachably connected in the height direction of the battery monomer.

In the technical scheme of this application embodiment, set up the bulge on the part that converges to set up buckle structure in order to realize both can dismantle the connection at the signal acquisition terminal. Such design makes when converging parts or signal acquisition terminal and break down, can realize both dismantlements on the free direction of height of battery through the bulge on the part that converges and the buckle structure of signal acquisition terminal to only change the part that breaks down, thereby avoided scrapping of whole battery module, and then promoted the life of battery.

In some embodiments, the protruding portion is recessed along the height direction towards one side of the battery cell to form a hollow cavity, the protruding portion is provided with a through hole communicated with the hollow cavity, and the fastening structure is configured to extend into the hollow cavity through the through hole so as to be fastened with the protruding portion. Through set up the cavity that has the through-hole on the bulge for buckle structure can get into the cavity of bulge through the through-hole in order to realize the joint, thereby realizes converging the connection of part and signal acquisition terminal in the free direction of height of battery.

In some embodiments, the snap structure comprises: a first abutting portion for abutting against an outer surface of the projecting portion; the second abutting part is used for abutting against the inner surface of the hollow cavity; and a transition portion for connecting the first abutting portion and the second abutting portion, the transition portion being disposed in the through hole. The design enables the buckling structure to be fixed in the height direction of the battery monomer through abutting against the protruding part, and therefore buckling connection of the bus component and the signal acquisition terminal is achieved.

In some embodiments, the transition portion is spaced apart from an inner wall of the through-hole. Such a design makes it easier for the second abutment portion connected to the transition portion to pass through the through hole in the projection portion during mounting or dismounting.

In some embodiments, the snap structure further comprises an inclined portion located in the hollow cavity, one end of the inclined portion is connected to the second abutting portion, and the other end of the inclined portion extends obliquely towards the battery cell, and the inclined portion is configured to deform the second abutting portion and the transition portion when being subjected to pressure so as to detach the snap structure. Through setting up the rake that links to each other with second butt portion for the rake can drive the deformation of second butt portion and transition portion when receiving pressure, thereby realizes the connection dismantled of buckle structure and bulge, and then has promoted the life of battery.

In some embodiments, the other end of the inclined portion is spaced apart from the battery cell. Such design makes the rake can not always with bulge extrusion atress, the buckle structure's of being convenient for dismantlement on the one hand, and on the other hand has also avoided rake atress to make buckle structure break away from the bulge in the battery use.

In some embodiments, a sidewall of the protrusion is provided with an opening communicating with the hollow cavity, and at least a portion of the inclined portion is exposed through the opening. Through the opening that communicates with the cavity body for can extrude buckle structure's slope via the opening when dismantling, thereby realize bulge and buckle structure's detachable connection.

In some embodiments, the snap structures are arranged on two sides of the signal acquisition terminal in pairs. Such design makes buckle structure atress when dismantling even to increased buckle structure's life, and then promoted the life of battery.

In some embodiments, the signal acquisition terminal comprises: the first connecting part is used for being connected with the confluence part, and the buckle structure is arranged on the first connecting part; a second connection part for electrically connecting with the circuit board; along direction of height, first connecting portion with the second connecting portion dislocation set. Through setting up first connecting portion and second connecting portion dislocation for buckle structure on the first connecting portion can be in the free direction of height of battery and bulge joint.

In some embodiments, the second connecting portion includes a stopper protrusion extending toward the bus member, the bus member is provided with a groove, and the stopper protrusion is inserted into the groove to restrict movement of the signal collecting terminal. In some embodiments, the limiting protrusions are disposed on both sides of the second connection part in pairs. Through in inserting the recess on the part that converges with the spacing arch of both sides on the second connecting portion, can restrict the removal of signal acquisition terminal on the monomer width direction of battery to reduce the possibility that signal acquisition terminal atress warp, thereby promote the life-span of signal acquisition terminal, and then promote the life of battery.

In a second aspect, the present application provides an electrical device comprising a battery as provided in the first aspect of the present application, the battery being configured to provide 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 embodiments. The drawings are only for purposes of illustrating 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 provided in an embodiment of the present application;

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

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

fig. 5 is an isometric view of a battery module according to an embodiment of the present application;

FIG. 6 is a schematic view of a bus bar assembly according to an embodiment of the present disclosure;

FIG. 7 is a partial schematic view of the cross-sectional view of FIG. 5 taken along the line A-A;

FIG. 8 is an enlarged partial schematic view of FIG. 5 at B;

fig. 9 is a schematic distribution diagram of signal acquisition terminals according to an embodiment of the present application;

fig. 10 is an enlarged partial schematic view at C of fig. 9.

The reference numbers in the detailed description are as follows:

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

20 cell module, 21 cell, 211 end cap, 211a electrode terminal, 212 case, 213 electrode assembly;

30 boxes, 301 first part, 302 second part;

40 bus member, 401 protrusion, 402 groove, 401a through hole, 401b hollow cavity, 401c opening, 401d protrusion outer surface, 401e hollow cavity inner surface, 401f through hole inner wall, 401g protrusion side wall;

the signal acquisition terminal comprises 50 signal acquisition terminals, 501 buckle structures, 502 first connecting parts, 503 second connecting parts, 504 limiting bulges, 505 circuit boards, 501a first abutting parts, 501b second abutting parts, 501c transition parts and 501d inclined parts.

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", etc. indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing the embodiments of the present application and for simplicity in description, but 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; 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 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," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate 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, batteries of electric vehicles often need dozens or even thousands of battery cells.

With the increasing severity of energy problems and environmental problems, electric vehicles with the advantages of national subsidies, clean energy and the like are gradually popularized, and more consumers select new energy vehicles. 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. The application field of the power battery is continuously expanded, and the market demand of the power battery is also continuously expanded.

The applicant notices that the current signal acquisition terminal and the current convergence part are usually fixed in a welding or riveting mode, but when the signal acquisition terminal or the current convergence part has problems, because the signal acquisition terminal and the current convergence part are already connected together in a welding or riveting mode, forced separation often easily causes deformation and damage of the current convergence part welded with a battery monomer, when the current convergence part or the signal acquisition terminal is damaged, the battery can be correspondingly scrapped together, the service life of the battery is greatly influenced, and therefore, how to prolong the service life of the battery becomes a problem to be solved urgently.

In order to solve the above technical problems, the applicant has studied and found that the occurrence of such a phenomenon can be avoided by changing the connection manner of the signal collecting terminal and the bus bar member. The battery comprises a bus component with a protruding part and a signal acquisition terminal with a buckling structure, wherein the buckling structure and the protruding part are detachably connected along the height direction of a battery monomer.

Based on above-mentioned technical scheme for when converging parts or signal acquisition terminal and breaking down, can realize both dismantlements on the free direction of height of battery through the bulge on the part that converges and the buckle structure of signal acquisition terminal, thereby only change the part that breaks down, thereby avoided scrapping of whole battery module, and then promoted the life of battery.

The application provides a battery and an electric device using the same. The battery may be a primary battery or a secondary battery, for example, the secondary battery includes a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid (or lead storage) battery, a lithium ion battery, a sodium ion battery, a polymer battery, and the like. The battery is suitable for various electric devices using the battery, such as mobile phones, portable equipment, notebook computers, battery cars, electric toys, electric tools, electric vehicles, ships, spacecrafts and the like, for example, the spacecrafts comprise airplanes, rockets, space shuttles, spacecrafts and the like; the battery is used for providing electric energy for the electric device.

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 device, but may be applied to all batteries including a box and electric devices 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 of the vehicle 1 during travel.

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 a battery module or a battery pack. A plurality of battery cells 21 may be connected in series and/or in parallel via the electrode terminals 211a to be applied to various applications. The battery referred to in this application includes a battery module 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. Battery 10 may also be referred to as a battery pack. In the embodiment of the present application, the plurality of battery cells 21 may directly form the battery pack, or the battery module 20 may be formed first, 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. In fig. 2, the battery 10 may include a plurality of battery modules 20 and a case 30, and the plurality of battery modules 20 are accommodated inside the case 30. The case 30 is used to accommodate the battery cells 21 or the battery module 20 to prevent liquid or other foreign substances from affecting the charge or discharge of the battery cells 21. 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 cuboid, cylinder, or sphere, 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.

In some embodiments, the case 30 may include a first portion 301 and a second portion 302, the first portion 301 and the second portion 302 cover each other, and the first portion 301 and the second portion 302 jointly define a space for accommodating the battery cell 21. The second part 302 may be a hollow structure with one open end, the first part 301 may be a plate-shaped structure, and the first part 301 covers the open side of the second part 302, so that the first part 301 and the second part 302 jointly define a space for accommodating the battery unit 21; the first portion 301 and the second portion 302 may be both hollow structures with one side open, and the open side of the first portion 301 may cover the open side of the second portion 302.

Fig. 3 shows a schematic structural diagram of the battery module 20 according to an embodiment of the present application. In fig. 3, the battery module 20 may include a plurality of battery cells 21, the plurality of battery cells 21 may be connected in series or in parallel or in series-parallel to form the battery module 20, and the plurality of battery modules 20 may be connected in series or in parallel or in series-parallel to form the battery 10. In this application, the battery cells 21 may include a lithium ion battery, a sodium ion battery, a magnesium ion battery, 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 brevity, the following embodiments are 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. Optionally, the shape of end cap 211 may be adapted to the shape of housing 212 to fit 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. 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. Alternatively, the end cover 211 and the housing 212 may be integrated, specifically, the end cover 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 encapsulate the interior of the housing 212, the end cover 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., and the embodiment of the present invention is not limited thereto.

The electrode assembly 213 is a part in which electrochemical reactions occur in the battery cell 21. 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 cell 21, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected to the electrode terminal 211a to form a current loop.

According to some embodiments of the present application, referring to fig. 5 to 8, fig. 5 is a schematic axial side view of a battery module provided in an embodiment of the present application, fig. 6 is a schematic structural view of a bus member provided in an embodiment of the present application, fig. 7 is a partial schematic view of a cross-sectional view of fig. 5 taken along a-a direction, and fig. 8 is a partial schematic enlarged view of fig. 5 at B. The present application provides a battery 10. The battery 10 includes battery cells 21, a bus bar member 40, and a signal acquisition terminal 50. The bus bar member 40 is used to electrically connect with the battery cells 21. The side of the bus bar member 40 away from the battery cell 21 is provided with a projection 401. The signal collecting terminal 50 is used for collecting the temperature or voltage signal of the battery cell 21. The signal acquisition terminal 50 includes a snap structure 501. The snap structure 501 and the protruding portion 401 are detachably connected in the height direction Z of the battery cell 21.

As shown in the drawing, the Z direction in the drawing is the height direction of the battery cell 21, and the X direction in the drawing is the width direction of the battery cell 21.

The bus bar member 40 is used to achieve electrical connection between the plurality of battery cells 21, such as parallel connection or series-parallel connection. The bus member 40 may achieve electrical connection between the battery cells 21 by connecting the electrode terminals 211a of the battery cells 21. In some embodiments, the bus member 40 may be fixed to the electrode terminal 211a of the battery cell 21 by welding. The bus member 40 may be various shapes and various sizes, such as a rectangle, a square, a hexagonal prism, etc. Specifically, the shape of the bus member 40 may be determined according to the specific shape and size of the electrode terminal 211 a.

The signal collecting terminal 50 is used for collecting a temperature or voltage signal of the battery cell 21. One end of the signal collecting terminal 50 is connected to the circuit board 505, and the other end is connected to the bus bar 40 to collect a signal. To adapt to the use environment inside the battery 10 and facilitate signal collection of the battery cells 21, the signal collecting terminals 50 should be formed of a material that can conduct electricity or heat, and in some embodiments, the material of the signal collecting terminals 50 can be nickel.

Referring to fig. 6, the projection 401 is a part on the bus bar member 40 for connection with the signal collecting terminal 50. Specifically, the projection 401 is provided on a surface on a side away from the battery cell 21 in the Z direction in the drawing, and extends in a direction away from the surface on the side to form a projection.

Referring to fig. 8, the snap structure 501 is a part of the signal collecting terminal 50 for connecting with the bus bar part 40. The snap structure 501 is disposed at an end of the signal collecting terminal 50 away from the circuit board 505 in the Z direction in the drawing. The snap structure 501 may be elastically deformed to achieve the mounting and dismounting of the protrusion 401 of the bus bar member 40, and therefore, the material of the snap structure 501 needs to have a certain elastic deformation capability. Such as nickel, copper, aluminum, iron, and the like. In some embodiments, the snap structure 501 may use a nickel material to enable the signal acquisition capability of the signal acquisition terminal 50.

Through set up bulge 401 on parts 40 that converge to and set up buckle structure 501 on signal acquisition terminal 50 in order to realize detachable connection between them, make when parts 40 or signal acquisition terminal 50 break down to converge, can realize both dismantlements on the direction of height Z of battery monomer 21 through bulge 401 on parts 40 that converge and the buckle structure 501 of signal acquisition terminal 50, thereby only change the part that breaks down, thereby avoided scrapping of whole battery module 20, and then promoted the life of battery 10.

According to some embodiments of the present application, please refer to fig. 6 and fig. 7, a side of the protrusion 401 facing the battery cell 21 is recessed along the height direction Z to form a hollow cavity 401b, the protrusion 401 is provided with a through hole 401a communicating with the hollow cavity 401b, and the fastening structure 501 is configured to extend into the hollow cavity 401b through the through hole 401a to be fastened with the protrusion 401.

The hollow cavity 401b is a certain space formed on the inner surface of the protrusion 401, the hollow cavity 401b is provided with a through hole 401a on the surface of the protrusion 401 on the side away from the battery cell 21, the through hole 401a penetrates through the protrusion 401 along the height direction Z of the battery cell 21, so that the communication between the hollow cavity 401b and the space outside the protrusion 401 is realized, the through hole 401a can be in various shapes and sizes, such as rectangle, square, circle, and the like, and through the hollow cavity 401b with the through hole 401a, a part of the snap structure 501 can enter the space inside the hollow cavity 401b to better realize the snap connection with the protrusion 401.

By providing the hollow cavity 401b with the through hole 401a on the protruding portion 401, the snap structure 501 can enter the hollow cavity 401b of the protruding portion 401 through the through hole 401a to achieve the snap connection, so that the connection of the bus bar member 40 and the signal collecting terminal 50 in the height direction Z of the battery cell 21 is achieved.

According to some embodiments of the present application, the snap structure 501 comprises: a first abutment portion 501a for abutting an outer surface 401d of the projection; a second abutting portion 501b for abutting against the inner surface 401e of the hollow cavity; and a transition portion 501c for connecting the first abutting portion 501a and the second abutting portion 501b, the transition portion 501c being disposed in the through hole 401 a.

The abutting is a state in which two members connected to each other are supported by force, that is, there is an interaction force between the two members connected to each other. The "outer surface 401d of the protruding portion" refers to a surface of the protruding portion 401 on the side away from the battery cell 21, on which the first abutting portion 501a is abuttingly provided. The "inner surface 401e of the hollow cavity" refers to a surface of the protruding portion 401 on a side close to the battery cell 21, and the second abutting portion 501b abuts against the surface to limit the movement of the snap structure 501 in the height direction Z of the battery cell 21 together with the first abutting portion 501 a.

The transition portion 501c is a portion of the snap structure 501 for connecting the first abutting portion 501a and the second abutting portion 501b, and the transition portion 501c is disposed in the through hole 401a of the protruding portion 401 and connected to one end of the first abutting portion 501a and the second abutting portion 501b close to the through hole 401 a.

By providing the first abutting portion 501a and the second abutting portion 501b in the snap structure 501, the snap structure 501 can abut against the protruding portion 401 in the height direction Z of the battery cell 21 to realize fixation, so that the snap connection of the bus bar member 40 and the signal collecting terminal 50 is realized.

According to some embodiments of the present application, with continued reference to fig. 7, the transition portion 501c is spaced apart from the inner wall 401f of the through hole.

The "inner wall 401f of the through-hole" refers to a surface surrounding the through-hole 401a, and the shape thereof may be a regular plane or an irregular curved surface, and specifically, the shape of the inner wall 401f of the through-hole is determined according to the design of the through-hole 401 a. For example, when the through hole 401a may be square, the inner wall 401f of the through hole is four regular planes, and when the through hole 401a may be circular, the inner wall 401f of the through hole is a continuous curved surface, which is not limited herein.

By providing the transition portion 501c and the inner wall 401f of the through hole at an interval, the second abutting portion 501b connected to the transition portion 501c can be more easily inserted through the through hole 401a of the protruding portion 401 during mounting or dismounting.

According to some embodiments of the present application, the snap structure 501 further includes an inclined portion 501d located in the hollow cavity 401b, one end of the inclined portion 501d is connected to the second abutting portion 501b, the other end of the inclined portion 501d extends obliquely toward the battery cell 21, and the inclined portion 501d is configured to deform the second abutting portion 501b and the transition portion 501c when being subjected to a pressure to detach the snap structure 501.

The inclined portion 501d is configured to bring the second abutting portion 501b and the transition portion 501c to move together when being subjected to pressure, the inclined portion 501d is completely accommodated in the hollow cavity 401b, one end of the inclined portion 501d is connected to one end of the second abutting portion 501b away from the through hole 401a, and the other end extends toward the battery cell 21 at a certain angle in the height direction Z.

Through the inclined portion 501d connected with the second abutting portion 501b, the inclined portion 501d can drive the second abutting portion 501b and the transition portion 501c to deform when pressure is applied, so that the detachable connection of the buckling structure 501 and the protruding portion 401 is achieved, and the service life of the battery 10 is prolonged.

According to some embodiments of the present application, the other end of the inclined portion 501d is disposed spaced apart from the battery cell 21.

The other end 501d of the inclined portion 501d is spaced from the battery cell 21, so that the inclined portion 501d does not always extrude and bear force with the protruding portion 401, on one hand, the buckle structure 501 is convenient to disassemble, and on the other hand, the situation that the inclined portion 501d bears force to enable the buckle structure 501 to be separated from the protruding portion 401 in the use process of the battery 10 is avoided.

According to some embodiments of the present application, please continue to refer to fig. 8, a sidewall 401g of the protruding portion is provided with an opening 401c communicating with the hollow cavity 401b, and at least a portion of the inclined portion 501d is exposed through the opening 401 c.

The side wall 401g of the projection refers to an outer surface of the projection 401 in the width direction X. The side wall 401g of the protruding portion is distributed on two sides of the protruding portion 401 along the width direction X, in this application, an opening 401c is formed in the side wall 401g of each protruding portion, the opening 401c communicates with the hollow cavity 401b and the external space in the width direction X, so that the inclined portion 501d in part or all of the hollow cavity 401b can be exposed from the opening 401c, when the opening 401c is large enough, the inclined portion 501d is completely exposed, and a pressure F can be applied to the inclined portion 501d through the opening 401c of the protruding portion 401, so as to achieve elastic deformation of the buckle structure 501, and therefore the buckle structure 501 and the protruding portion 401 are separated.

Through the opening 401c communicating with the hollow cavity 401b, the inclined portion 501d of the snap structure 501 can be pressed via the opening 401c at the time of detachment, thereby achieving detachable connection of the projection 401 and the snap structure 501.

According to some embodiments of the present application, please refer to fig. 9 and fig. 10, fig. 9 is a schematic distribution diagram of a signal collecting terminal according to an embodiment of the present application, and fig. 10 is a schematic partial enlarged view of fig. 9 at C. As shown, the fastening structures 501 are disposed on two sides of the signal collecting terminal 50 in pairs.

"the snap structures 501 are provided in pairs" means that two snap structures 501 having the same shape and size form a set and are provided on the end surfaces of both sides of the signal collecting terminal 50 along a straight line in the width direction X of the battery cell 21. The snap structure 501 may be a set or multiple sets, and when there are multiple sets of the snap structure 501, the multiple sets of the snap structure 501 are disposed at intervals on the end surfaces of the two sides of the signal collecting terminal 50.

Through setting up buckle structure 501 in pairs on the width direction X at battery monomer 21 for the stress is even when dismantling the buckle structure 501 of the both sides of signal acquisition terminal 50, thereby has increased buckle structure 501's life, and then has promoted battery 10's life.

Referring to fig. 8 and 10, according to some embodiments of the present application, the signal collecting terminal 50 includes: the first connecting portion 502 is used for connecting with the bus bar component 40, and the fastening structure 501 is arranged on the first connecting portion 502; a second connection portion 503 for electrical connection with the circuit board 505; the first connection portions 502 and the second connection portions 503 are arranged in a staggered manner in the height direction Z.

The first connection portion 502 refers to a portion of the signal collecting terminal 50 on a side away from the circuit board 505, and the end surfaces of two sides of the first connection portion 502 are provided with a snap structure 501, preferably, the snap structure 501 is disposed on an end of the first connection portion 502 away from the circuit board 505 so as to be mounted on the protruding portion 401.

The second connection portion 503 is a portion of the signal collecting terminal 50 away from the circuit board 505, one end of the second connection portion 503 is electrically connected to the circuit board 505, and the other end is connected to the first connection portion 502.

The offset arrangement means that the projections of the first connecting portion 502 and the second connecting portion 503 in the height direction Z do not coincide, and the first connecting portion 502 and the second connecting portion 503 are optionally formed into a "Z" shape by the offset arrangement, so that on one hand, the first connecting portion 502 and the protruding portion 401 can be prevented from contact and extrusion deformation, and on the other hand, the snap structure 501 can be snapped through the through hole 401a of the protruding portion 401.

By arranging the first connection portion 502 and the second connection portion 503 in a staggered manner, the snap structure 501 on the first connection portion 502 can be snapped with the protruding portion 401 in the height direction Z of the battery cell 21.

According to some embodiments of the present application, referring to fig. 6, 8 and 10, the second connecting portion 503 includes a limiting protrusion 504 extending toward the bus member 40, the bus member 40 is provided with a groove 402, and the limiting protrusion 504 is inserted into the groove 402 to limit the movement of the signal collecting terminal 50. According to some embodiments of the present application, the position-limiting protrusions 504 are provided in pairs on both sides of the second connection portion 503.

The end surfaces of the two sides of the second connecting portion 503 along the width direction X are provided with limiting protrusions 504, one side surface of the bus bar member 40 away from the battery cell 21 is recessed towards the battery cell 21 to form a groove 402, and the limiting protrusions 504 are accommodated in the groove 402 to limit the movement of the signal acquisition terminal 50 in the width direction X. The position-limiting protrusion 504 may be rectangular, square, semicircular, etc., and specifically, may be determined according to the specific shape and size of the groove 402.

By inserting the limiting protrusions 504 on the two sides of the second connecting portion 503 into the grooves 402 on the bus bar 40, the movement of the signal collecting terminal 50 can be limited in the width direction X of the battery cell 21, so that the possibility of the signal collecting terminal 50 deforming under stress is reduced, the service life of the signal collecting terminal 50 is prolonged, and the service life of the battery 10 is prolonged.

According to some embodiments of the present application, there is also provided a power-consuming device, which includes the battery 10 in the above embodiments, wherein the battery 10 is used for providing power for the power-consuming device, and the power-consuming device may be any one of the aforementioned devices or systems using the battery 10.

According to some embodiments of the present application, referring to fig. 5-8, 10, the present application provides a battery 10. The battery 10 includes a battery cell 21, a bus member 40, and a signal acquisition terminal 50. The bus bar member 40 is used to electrically connect with the battery cells 21. The signal collecting terminal 50 is used for collecting the temperature or voltage signal of the battery cell 21. The side of the bus bar member 40 away from the battery cell 21 is provided with a projection 401 and a groove 402. The protrusion 401 is provided with a hollow cavity 401b recessed toward the battery cell 21 and a through hole 401a communicating with the hollow cavity 401 b. The signal collecting terminal 50 includes a first connection portion 502 and a second connection portion 503. The first connection portion 502 is provided with a pair of snap structures 501 on both sides. The snap structure 501 protrudes into the hollow cavity 401b through the through hole 401a to be detachably connected with the protrusion 401 along the height direction Z of the battery cell 21. The second connecting portion 503 is provided with stopper protrusions 504 extending toward the bus member 40 in pairs on both sides. The stopper protrusion 504 is inserted into the groove 402 of the bus member 40 to restrict the movement of the signal collecting terminal 50.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand 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 is to cover all embodiments that may fall within the scope of the appended claims.

Claims

1. A battery, comprising:

a battery cell;

the bus component is used for being electrically connected with the battery monomer, and a protruding part is arranged on one side, far away from the battery monomer, of the bus component;

the signal acquisition terminal is used for acquiring the temperature or voltage signal of the battery monomer, the signal acquisition terminal comprises a buckle structure, and the buckle structure and the protruding part are detachably connected in the height direction of the battery monomer.

2. The battery of claim 1, wherein the protrusion is recessed along the height direction towards one side of the battery cell to form a hollow cavity, the protrusion is provided with a through hole communicated with the hollow cavity, and the fastening structure is configured to extend into the hollow cavity via the through hole to be fastened with the protrusion.

3. The battery of claim 2, wherein the snap structure comprises:

a first abutting portion for abutting against an outer surface of the projecting portion;

the second abutting part is used for abutting against the inner surface of the hollow cavity; and

the transition part is used for connecting the first abutting part and the second abutting part and is arranged in the through hole.

4. The battery of claim 3, wherein the transition portion is spaced from an inner wall of the through-hole.

5. The battery of claim 3, wherein the snap fit structure further comprises an inclined portion located within the hollow cavity, one end of the inclined portion being connected to the second abutment portion and the other end of the inclined portion extending obliquely towards the battery cell, the inclined portion being configured to deform the second abutment portion and the transition portion when subjected to a compressive force to disassemble the snap fit structure.

6. The battery according to claim 5, wherein the other end of the inclined portion is disposed spaced apart from the battery cell.

7. The battery according to claim 5, wherein a side wall of the protruding portion is provided with an opening communicating with the hollow cavity, and at least a part of the inclined portion is exposed through the opening.

8. The battery of any of claims 1-7, wherein the snap features are provided in pairs on either side of the signal acquisition terminal.

9. The battery of claim 1, wherein the signal acquisition terminal comprises:

the first connecting part is used for being connected with the confluence part, and the buckle structure is arranged on the first connecting part;

a second connection part for electrically connecting with the circuit board;

along the height direction, first connecting portion with the second connecting portion dislocation set.

10. The battery according to claim 9, wherein the second connecting portion includes a stopper protrusion extending toward the bus member, the bus member is provided with a groove, and the stopper protrusion is inserted into the groove to restrict movement of the signal collecting terminal.

11. The battery according to claim 10, wherein the stopper protrusions are provided in pairs at both sides of the second connecting part.

12. An electrical device comprising a battery according to any of claims 1-11 for providing electrical energy.