CN219329350U - Battery and electricity utilization device - Google Patents

Abstract

The application discloses battery and power consumption device, the battery includes: a battery cell group including a plurality of stacked battery cells; the end plate is arranged at the end part of the battery cell group and is provided with an installation part; and the circuit board is used for collecting signals of at least one battery cell, one end of the circuit board, facing the end plate, is connected with an output piece, and the output piece is assembled in the installation part. From this, through assembling the output piece in the installation department, can be with the output piece fixed assembly of circuit board in the end plate, make circuit board and end plate integrated fixed, realize fixing the purpose to the end plate in advance with the circuit board, the slow-witted problem is prevented in the assembly, reduces the output piece risk of droing to, reduced battery manufacturing cost, promoted battery production beat.

Description

Battery and electricity utilization device

Technical Field

The present disclosure relates to a battery, and more particularly to a battery and an electric device having the battery.

Background

In the related art, the circuit board and the isolation board of the battery are integrated to supply materials, the circuit board is fixed on the isolation board, foolproof and assembly precision problems need to be considered when the circuit board is assembled with the isolation board, an output piece on the circuit board has a falling risk, the circuit board needs to be fixed on the isolation board in a hot riveting mode, the process cost is high, and the production rhythm is slow.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present application is to provide a battery, which fixedly mounts an output member of a circuit board to an end plate, so as to reduce the risk of falling off the output member.

The application further provides an electric device.

In a first aspect, embodiments of the present application provide a battery, including:

a battery cell group including a plurality of stacked battery cells;

the end plate is arranged at the end part of the battery cell group and is provided with an installation part;

and the circuit board is used for collecting signals of at least one battery cell, one end of the circuit board, facing the end plate, is connected with an output piece, and the output piece is assembled in the installation part.

In the above technical scheme, through assembling the output piece in the installation department, can be with the output piece fixed mounting of circuit board in the end plate, make circuit board and end plate integrated fixed, realize fixing the purpose to the end plate in advance with the circuit board, the slow-witted problem is prevented in the no assembly, reduces the output piece risk of droing to, reduced battery manufacturing cost, promoted battery production beat.

In some embodiments, the end plate includes an inner surface facing the battery cell stack and an outer surface facing away from the battery cell stack, and the mounting portion includes a mounting hole extending through the inner and outer surfaces, at least a portion of the output member being exposed to the outer surface of the end plate through the mounting hole.

In the above technical scheme, through setting up the installation department into the mounting hole, can simplify the installation department structure, reduce the end plate production degree of difficulty, can promote end plate production efficiency to, expose in the surface of end plate through the mounting hole through the at least part of output piece, be convenient for output piece and interfacing part are connected.

In some embodiments, the output member includes an output interface including a mating end face exposed to an outer surface of the end plate.

In the technical scheme, after the output piece is installed in the installation hole, the output piece is exposed out of the outer surface of the end plate through the inserting end face, so that the output interface and the butt joint piece are convenient to insert, and the output piece and the butt joint piece are convenient to connect.

In some embodiments, the battery further comprises an insulator, at least part of which is located between the end plate and the battery cell group, the insulator at least partially covering the output interface and other surfaces exposed to the mounting hole except for the plugging end surface.

In the above technical scheme, through setting up the insulating part between end plate and battery monomer group, can reduce the risk that battery monomer was electric to be transmitted to on the end plate, can reduce battery leakage risk, and, cover output interface through the insulating part and expose in the surface of mounting hole except that the grafting terminal surface, grafting terminal surface exposes end plate and insulating part, the grafting terminal surface exposes and is convenient for peg graft with the butt joint piece, and, the insulating part covers output interface except that other surfaces of grafting terminal surface, reduce output part department leakage risk, can further reduce battery leakage risk.

In some embodiments, the battery cell includes a body portion having a through hole penetrating in a first direction, and an electrical connection terminal connected to the body portion in the first direction, the battery cell further including a separator having one side of the separator, the electrical connection terminal penetrating through the through hole to make electrical connection at the other side surface of the separator.

In the technical scheme, through setting up the separator, the separator can keep apart battery monomer and end plate, further reduces battery leakage risk.

In some embodiments, the insulator includes a first insulator component and a second insulator component, the first insulator component being located between the end plate and the spacer, the second insulator component being located between the output interface and the end plate.

In the above technical scheme, set up between end plate and separator through first insulating branch, can separate end plate and separator, further reduce the risk that battery monomer electricity was passed to on the end plate, can further reduce battery electric leakage risk to, lie in between output interface and the end plate through second insulating branch, realize that second insulating branch covers output interface except that grafting terminal surface other and expose in the effect of the surface of mounting hole, further reduce output department electric leakage risk, can further reduce battery electric leakage risk.

In some embodiments, the circuit board includes a base and an extension, the base and the output member are respectively located at two adjacent end surfaces of the battery cell group, and the extension is bent from the base to the output member to be connected to the output member.

In the technical scheme, the extending part is bent and extended from the base part to the output piece, so that the output piece is convenient to connect with the extending part, and the output piece is convenient to assemble in the mounting hole.

In some embodiments, the circuit board includes a base and an extension, the base and the output member are respectively located at two adjacent end surfaces of the battery cell group, and the extension is bent from the base to the output member to be connected to the output member.

In the technical scheme, the extending part is bent and extended from the base part to the output piece, so that the output piece is convenient to connect with the extending part, and the output piece is convenient to assemble in the mounting hole.

In some embodiments, the battery cell group includes a first mounting end surface perpendicular to the first direction and a second mounting end surface perpendicular to the second direction, the battery cell group includes a plurality of battery cells stacked in sequence along the third direction, the first direction, the second direction and the third direction are perpendicular to each other, the first mounting end surface is provided with an output piece, the second mounting end surface is provided with a base, and the extension portion bends and extends from the second mounting end surface toward the first mounting end surface.

In the above technical scheme, through setting up first installation terminal surface and second installation terminal surface, first installation terminal surface is equipped with the output, and the basal portion is installed to the second installation terminal surface, can realize setting up basal portion and output respectively in the two adjacent terminal surfaces effect of battery monomer group.

In some embodiments, the battery cell includes a body portion having a through hole penetrating in a first direction, and an electrical connection terminal connected to the body portion in the first direction, the body portion being located at one side of the separator, the electrical connection terminal penetrating through the through hole to make electrical connection at the other side surface of the separator, and the extension portion and/or the output member being mounted at a side surface of the separator facing away from the body portion.

In the above technical scheme, install in the isolator through extension and/or output spare and deviate from in the side surface of main part, the isolator can be with extension and battery monomer group, output spare and battery monomer group interval, can reduce the risk that battery monomer group heat transfer to extension, output spare on.

In some embodiments, the extension and/or output member is bonded, snapped, riveted or threaded to a side surface of the spacer facing away from the body portion.

In the technical scheme, the extending part and/or the output piece are/is adhered, clamped, riveted or screwed on the surface of one side of the isolating piece, which is away from the main body part, so that the extending part and/or the output piece can be fixed on the isolating piece, the output piece is mounted in the preset position in front of the mounting hole, and the falling risk of the output piece is further reduced.

In a second aspect, an embodiment of the present application further provides an electrical device, including the above battery, where the battery is configured to provide electrical energy for the electrical device.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic illustration of a vehicle provided in some embodiments of the present application;

FIG. 2 is a schematic illustration of a battery provided in some embodiments of the present application;

FIG. 3 is an exploded view of a portion of the structure of a battery provided in some embodiments of the present application;

FIG. 4 is a schematic illustration of an output component of a circuit board according to some embodiments of the present application mounted to an end plate;

FIG. 5 is an exploded view of a circuit board and end plate provided in some embodiments of the present application;

FIG. 6 is a schematic illustration of a battery cell stack provided in some embodiments of the present application;

FIG. 7 is a schematic illustration of a spacer provided in some embodiments of the present application;

fig. 8 is a schematic diagram of a first insulating component provided in some embodiments of the present application.

Reference numerals:

a battery 100;

a battery cell group 10;

a battery cell 11; a main body 111; an electrical connection terminal 112;

an inner surface 12; an outer surface 13; a first mounting end face 14; a second mounting end face 15;

an end plate 20; a mounting portion 21; a mounting hole 22;

a circuit board 30; an output member 31; an output interface 311; a mating end face 312;

a base 32; an extension 33; a positioning hole 34;

a first insulating member 41; a second insulating member 42;

a spacer 50; a through hole 51;

an electric device 200; a controller 300; a motor 400.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

In the embodiments of the present application, the same reference numerals denote the same components, and in the interest of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the present application, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are illustrative only and should not be construed as limiting the present application in any way.

The term "plurality" as used herein refers to more than two (including two).

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited by the embodiment of the present application. The battery cells may be cylindrical, flat, rectangular, or otherwise shaped, as well as the embodiments herein are not limited in this regard. The battery cells are generally classified into three types according to the packaging method: the cylindrical battery cell, the square battery cell and the soft pack battery cell are not limited thereto.

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module or a battery pack, or the like. The battery generally includes a case for housing one or more battery cells or a plurality of battery modules. The case body can prevent liquid or other foreign matters from affecting the charge or discharge of the battery cells.

The battery cell includes a case, an electrode assembly, and an electrolyte, and the case is used to accommodate the electrode assembly and the electrolyte. The electrode assembly consists of a positive electrode plate, a negative electrode plate and a separation film. The battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece to work. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together.

The material of the separator may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may be a wound structure or a lamination structure, and the embodiment of the present application is not limited thereto.

In the related art, the battery is provided with a circuit board and a separation board, the circuit board and the separation board are integrated to supply materials, the circuit board is fixed on the separation board, foolproof and assembly precision problems need to be considered when the circuit board is assembled with the separation board, an output piece on the circuit board has a falling risk, and the circuit board needs to be fixed on the separation board in a hot riveting mode, so that the process cost is high, and the production rhythm is slow.

Based on the above-mentioned consideration, in order to solve the problem that the output piece on the circuit board has a falling risk, the inventor has conducted intensive studies and devised a battery, by assembling the output piece in the mounting portion of the end plate, the output piece of the circuit board can be fixedly assembled to the end plate, so that the circuit board and the end plate are integrally fixed, the purpose of pre-fixing the circuit board to the end plate is achieved, the problem of fool-proofing during assembly is avoided, the falling risk of the output piece is reduced, the production cost of the battery is reduced, and the production beat of the battery is promoted.

The battery 100 disclosed in the embodiments of the present application may be used in, but not limited to, a power utilization device 200 of a vehicle, a ship, an aircraft, or the like. The power supply system having the battery 100 disclosed in the present application to constitute the power consumption device 200 may be used, which is advantageous in improving the application range of the battery 100.

The embodiment of the application provides an electric device 200 using a battery 100 as a power source, where the electric device 200 may be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft, and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiments will take an electric device 200 according to an embodiment of the present application as an example of a vehicle. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle and the like. The battery 100 is provided in the interior of the vehicle, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle. The battery 100 may be used for power supply of a vehicle, for example, the battery 100 may be used as an operating power source of the vehicle. The vehicle may also include a controller 300 and a motor 400, the controller 300 being configured to control the battery 100 to power the motor 400, for example, for operating power requirements during start-up, navigation, and travel of the vehicle.

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

A battery 100 according to an embodiment of the present application is described below with reference to fig. 2 to 8.

The battery 100 includes: a battery cell stack 10, an end plate 20, and a circuit board 30. The battery cell group 10 includes a plurality of stacked battery cells 11, and an end plate 20 is provided at an end of the battery cell group 10, the end plate 20 having a mounting portion 21. The circuit board 30 is used for collecting signals of at least one battery cell 11, one end of the circuit board 30 facing the end plate 20 is connected with an output piece 31, and the output piece 31 is assembled in the mounting portion 21.

Wherein, as shown in fig. 3, when the battery 100 is placed in the direction of fig. 3, a plurality of battery cells 11 are stacked in the X direction of fig. 3, and at least one end of the battery cell group 10 is provided with an end plate 20 in the Y direction of fig. 3, the present application describes taking the case that both end portions of the battery cell group 10 are provided with end plates 20 in the Y direction of fig. 3, and at this time, the end plates 20 are provided with two, and the two end plates 20 are respectively provided at both end portions of the battery cell group 10 in the Y direction of fig. 3. The end plate 20 has a mounting portion 21. The circuit board 30 is used for collecting signals of at least one battery cell 11, for example: the circuit board 30 is used for collecting signals such as temperature signals and voltage signals of the battery cells 11. The circuit board 30 may be extended in the Y direction in fig. 3, and an output member 31 is connected to one end of the circuit board 30 toward the end plate 20, and the output member 31 is fitted into the mounting portion 21. The specific structure of the mounting portion 21 is specifically designed according to the actual requirement, so long as the output member 31 can be assembled in the mounting portion 21. The output member 31 may be a connector, and the signal of the battery cell 11 collected by the circuit board 30 is transmitted to the outside through the output member 31.

In the above technical solution, by assembling the output member 31 in the mounting portion 21, the output member 31 of the circuit board 30 can be fixedly assembled in the end plate 20, so that the circuit board 30 and the end plate 20 are integrally fixed, the purpose of pre-fixing the circuit board 30 to the end plate 20 is achieved, compared with the prior art, the problem of foolproof assembly is avoided, the risk of falling off the output member 31 is reduced, the production cost of the battery 100 is reduced, and the production beat of the battery 100 is improved.

According to some embodiments of the present application, the battery 100 may include a case in which a plurality of battery cells 11 are accommodated. The case is used for providing an assembly space for the battery cell 11, and the case may have various structures. In some embodiments, the case may include a first case body and a second case body that are mutually covered, and together define an assembly space for accommodating the battery cell 11. The second box body can be of a hollow structure with one end open, the first box body can be of a plate-shaped structure, and the first box body covers the open side of the second box body so that the first box body and the second box body jointly define an assembly space; the first case body and the second case body may be hollow structures each having one side opened, and the open side of the first case body is closed to the open side of the second case body. Of course, the case formed by the first case body and the second case body may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In the battery 100, the plurality of battery cells 11 may be connected in series or parallel or a series-parallel connection, wherein a series-parallel connection refers to that the plurality of battery cells 11 are connected in series or parallel. The plurality of battery cells 11 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 11 is accommodated in the box body; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 11 in series or parallel or series-parallel connection, and a plurality of battery modules are then connected in series or parallel or series-parallel connection to form a whole and are accommodated in a case. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 11.

According to some embodiments of the present application, the end plate 20 includes an inner surface 12 facing the battery cell stack 10 and an outer surface 13 facing away from the battery cell stack 10, and the mounting portion 21 includes a mounting hole 22 extending through the inner surface 12 and the outer surface 13, at least a portion of the output member 31 being exposed to the outer surface 13 of the end plate 20 through the mounting hole 22.

As shown in fig. 3, along the Y direction in fig. 3, the surface of the end plate 20 close to the battery cell group 10 is the inner surface 12 of the end plate 20, the surface of the end plate 20 away from the battery cell group 10 is the outer surface 13 of the end plate 20, and the inner surface 12 of the end plate 20 and the outer surface 13 of the end plate 20 are oppositely disposed. Along the Y direction in fig. 3, that is, along the thickness direction of the end plate 20, the mounting hole 22 penetrates through the end plate 20, and the mounting hole 22 penetrates through the inner surface 12 of the end plate 20 and the outer surface 13 of the end plate 20, the output member 31 is mounted in the mounting hole 22, and at least part of the structure of the output member 31 is exposed to the outer surface 13 of the end plate 20 through the mounting hole 22, it can also be understood that after the output member 31 is mounted in the mounting hole 22, at least part of the structure of the output member 31 is exposed to the outer surface 13 of the end plate 20, and this application describes taking as an example that part of the structure of the output member 31 is exposed to the outer surface 13 of the end plate 20 through the mounting hole 22.

In the above technical scheme, through setting up installation department 21 into mounting hole 22, can simplify installation department 21 structure, reduce end plate 20 production degree of difficulty, can promote end plate 20 production efficiency to, expose in the surface 13 of end plate 20 through mounting hole 22 through the at least part of output piece 31, be convenient for output piece 31 and interfacing part connection.

According to some embodiments of the present application, as shown in fig. 4, output member 31 includes an output interface 311, and output interface 311 includes a mating end surface 312, where mating end surface 312 is exposed at outer surface 13 of end plate 20.

After the output member 31 is installed in the installation hole 22, the insertion end surface 312 is exposed to the outer surface 13 of the end plate 20, which can be understood that the insertion end surface 312 is exposed to the outer surface 13 of the end plate 20. The output interface 311 is used for being spliced with the butt joint, and the output interface 311 is spliced with the butt joint through a splicing end face 312 so as to realize the connection between the output piece 31 and the butt joint.

In the above technical solution, after the output member 31 is installed in the installation hole 22, the output interface 311 is conveniently plugged with the docking member by exposing the outer surface 13 of the end plate 20 through the plugging end surface 312, so that the output member 31 is conveniently connected with the docking member.

According to some embodiments of the present application, battery 100 further includes an insulating member, at least a portion of which is located between end plate 20 and battery cell stack 10, and at least a portion of which covers the surface of output interface 311 exposed to mounting hole 22 except for plug end face 312.

Wherein, the insulating part has insulating effect, and the insulating part can be set up to rubber spare, and the insulating part also can be set up to the working of plastics. At least part of the structure of the insulating member is disposed between the end plate 20 and the battery cell group 10, and the insulating member disposed between the end plate 20 and the battery cell group 10 can reduce the risk of electrical transfer of the battery cells 11 to the end plate 20, and can reduce the risk of leakage of the battery 100. The insulating piece covers output interface 311 and exposes in the surface of mounting hole 22 except grafting terminal surface 312, and grafting terminal surface 312 is uncovered by the insulating piece, and terminal plate 20 and insulating piece are exposed to grafting terminal surface 312, and grafting terminal surface 312 exposes and is convenient for peg graft with the interfacing part to, the insulating piece covers output interface 311 and other surfaces except grafting terminal surface 312, reduces output piece 31 department electric leakage risk, can further reduce battery 100 electric leakage risk.

In the above technical solution, through setting up the insulating part between end plate 20 and battery unit group 10, can reduce the risk that the electricity of battery unit 11 transmits to end plate 20, can reduce battery 100 electric leakage risk, and, cover output interface 311 through the insulating part and expose in mounting hole 22's surface except for grafting terminal surface 312, grafting terminal surface 312 exposes end plate 20 and insulating part, grafting terminal surface 312 exposes and is convenient for peg graft with the interfacing part, and, insulating part covers output interface 311 except for grafting terminal surface 312 other surfaces, reduce output 31 department electric leakage risk, can further reduce battery 100 electric leakage risk.

According to some embodiments of the present application, as shown in fig. 3, the battery cell 11 includes a main body portion 111 and an electrical connection terminal 112 connected to the main body portion 111 in a first direction, the battery 100 further includes a separator 50, the separator 50 has a through hole 51 penetrating in the first direction, the main body portion 111 is located at one side of the separator 50, and the electrical connection terminal 112 passes through the through hole 51 to be electrically connected at the other side surface of the separator 50.

The spacer 50 has an insulating function, the spacer 50 may be a plastic member, and the spacer 50 may also be a rubber member, as shown in fig. 3, where the first direction refers to the Y direction in fig. 3, and along the first direction, at least one end of the main body 111 is connected with an electrical connection terminal 112, and the electrical connection terminal 112 may be a post of the battery cell 11. The separator 50 may have a plate-shaped structure, the separator 50 has through holes 51 penetrating in the first direction, the through holes 51 may be plural, the through holes 51 and the battery cells 11 are in one-to-one correspondence, the main body portion 111 is located at one side of the separator 50, the electric connection terminal 112 is inserted into the through holes 51, the electric connection terminal 112 may extend to the other side of the separator 50, the other side of the separator 50 is a side of the separator 50 away from the battery cells 11 in the first direction, and the electric connection terminals 112 of the battery cells 11 may be electrically connected through a bus bar (e.g., a tab), thereby realizing serial connection and/or parallel connection between the battery cells 11. As one example, a bus member is provided at the other side surface of the separator 50 away from the battery cells 11, and the electrical connection terminals 112 of the plurality of battery cells 11 may be electrically connected through the bus member (e.g., a tab).

In the above technical solution, by providing the separator 50, the separator 50 can isolate the battery cell 11 from the end plate 20, so as to further reduce the risk of leakage of the battery 100.

According to some embodiments of the present application, as shown in fig. 3, the insulator includes a first insulator component 41 and a second insulator component 42, the first insulator component 41 being located between the end plate 20 and the spacer 50, and the second insulator component 42 being located between the output interface 311 and the end plate 20.

Wherein, the first insulating sub 41 and the second insulating sub 42 have insulating effect, the first insulating sub 41 may be a rubber member or a plastic member, and the second insulating sub 42 may be a rubber member or a plastic member. The first insulating member 41 is disposed between the end plate 20 and the spacer 50, the second insulating member 42 is disposed between the output port 311 and the end plate 20, and the second insulating member 42 covers the surface of the output port 311 exposed to the mounting hole 22 except for the insertion end face 312.

In the above technical scheme, through first insulating subassembly 41 setting between end plate 20 and spacer 50, can separate end plate 20 and spacer 50, further reduce the risk that the electric transmission of battery monomer 11 is on end plate 20, can further reduce battery 100 electric leakage risk, and, lie in between output interface 311 and end plate 20 through second insulating subassembly 42, realize that second insulating subassembly 42 covers output interface 311 and expose except grafting terminal surface 312 in the effect on the surface of mounting hole 22, further reduce output 31 department electric leakage risk, can further reduce battery 100 electric leakage risk.

According to some embodiments of the present application, the circuit board 30 includes a base 32 and an extension 33, the base 32 and the output member 31 are respectively located at two adjacent end surfaces of the battery cell group 10, and the extension 33 is bent from the base 32 toward the output member 31 to be connected to the output member 31.

Wherein, the base 32 and the output member 31 are respectively located at two adjacent end surfaces of the battery unit group 10, it can also be understood that the base 32 and the output member 31 are respectively located at two adjacent different end surfaces of the battery unit group 10, one end of the extension portion 33 is connected with the base 32, the extension portion 33 bends and extends from the base 32 to the output member 31, an included angle is formed between the base 32 and the extension portion 33, so that the extension portion 33 is connected with the output member 31, and it can also be understood that the output member 31 is disposed on the extension portion 33. As an example, as shown in fig. 3, when the battery 100 is placed in the direction of fig. 3, the Z-direction in fig. 3 is the up-down direction of the battery 100, the base 32 is located at the upper end face of the battery cell stack 10, the extension 33 is located at the side end face of the battery cell stack 10, and the side end face may be the end face of the battery cell stack 10 in the Y-direction.

In the above-mentioned technical solution, the extension portion 33 is bent and extended from the base portion 32 to the output member 31, so that the output member 31 is connected with the extension portion 33, and the output member 31 is assembled in the mounting hole 22.

According to some embodiments of the present application, the circuit board 30 may have a sampling terminal, the sampling terminal may be connected with the extension portion 33, the sampling terminal contacts with the converging component, the sampling terminal may sample at the converging component, the sampling terminal may collect a temperature signal of the battery cell 11 when the sampling terminal is a temperature sensor, the sampling terminal may also be a component for collecting voltage and current, and the sampling terminal may collect voltage and current of the battery cell 11 when the sampling terminal is a component for collecting voltage and current.

According to some embodiments of the present application, the circuit board 30 may have sampling terminals, which may be connected with the extension 33, which are in contact with the battery cells 11, e.g., the sampling terminals are temperature sensors, which may collect temperature signals of the battery cells 11.

According to some embodiments of the present application, the battery cell group 10 includes a first mounting end surface 14 perpendicular to the first direction and a second mounting end surface 15 perpendicular to the second direction, the battery cell group 10 includes a plurality of battery cells 11 stacked in sequence along the third direction, the first direction, the second direction and the third direction are perpendicular to each other, the first mounting end surface 14 is provided with an output member 31, the second mounting end surface 15 is provided with a base portion 32, and the extension portion 33 extends from the second mounting end surface 15 toward the first mounting end surface 14 in a bending manner.

When the battery 100 is placed in the direction shown in fig. 3, the third direction is the Z direction shown in fig. 3, the first direction is the Y direction shown in fig. 3, the second direction is the X direction shown in fig. 3, the first mounting end face 14 is a side end face of the battery cell group 10 in the first direction, the second mounting end face 15 is an upper end face or a lower end face of the battery cell group 10 in the second direction, the plurality of battery cells 11 are stacked in sequence in the second direction, the first mounting end face 14 is provided with an output member 31, the second mounting end face 15 is provided with a base portion 32, and the extension portion 33 extends from the second mounting end face 15 toward the first mounting end face 14 in a bending manner.

In the above-described technical solution, by providing the first mounting end face 14 and the second mounting end face 15, the first mounting end face 14 is provided with the output member 31, and the second mounting end face 15 is provided with the base portion 32, it is possible to achieve the effect that the base portion 32 and the output member 31 are provided respectively to two adjacent end faces of the battery cell group 10.

According to some embodiments of the present application, the battery 100 is the battery 100 in the above embodiments, and the extension portion 33 and/or the output member 31 is mounted on a side surface of the separator 50 facing away from the main body portion 111 of the battery cell 11.

As shown in fig. 3, the battery 100 is the battery 100 in the above embodiment, the extension portion 33 and/or the output member 31 is mounted on a side surface of the separator 50 facing away from the main body 111, and it is also understood that the extension portion 33 or the output member 31 is mounted on a side surface of the separator 50 facing away from the main body 111, or the extension portion 33 and the output member 31 are both mounted on a side surface of the separator 50 facing away from the main body 111, and along the Y direction in fig. 3, the surface of the separator 50 facing away from the battery cell group 10 is the side surface of the separator 50 facing away from the main body 111. The present embodiment will be described by taking the example in which the extension 33 is attached to a side surface of the spacer 50 facing away from the main body 111, and the output member 31 is attached to the extension 33.

In the above-mentioned technical solution, the extending portion 33 and/or the output member 31 are/is mounted on the surface of the side, facing away from the main body 111, of the spacer 50, so that the spacer 50 can space the extending portion 33 from the battery cell set 10 and the output member 31 from the battery cell set 10, and the risk of heat transfer from the battery cell set 10 to the extending portion 33 and the output member 31 can be reduced.

According to some embodiments of the present application, extension 33 and/or output member 31 is bonded, snapped, riveted or threaded to a surface of spacer 50 on a side facing away from main body portion 111.

It should be understood that the extension portion 33 and/or the output member 31 is connected to a side surface of the spacer 50 facing away from the main body 111, or that the extension portion 33 and the output member 31 are both connected to a side surface of the spacer 50 facing away from the main body 111, herein, the description is given taking the extension portion 33 mounted on a side surface of the spacer 50 facing away from the main body 111, and the output member 31 is mounted on the extension portion 33 as an example. The extension 33 may be glued, snapped, riveted or screwed to a surface of the spacer 50 facing away from the main body 111. The extension 33 may be bonded to the spacer 50 by structural adhesive. The extension portion 33 may be mounted on the spacer 50 through a clamping structure, the clamping structure may be disposed on a side surface of the spacer 50 facing away from the main body portion 111, the clamping structure may be disposed around the extension portion 33, the clamping structure may clamp the extension portion 33 to the spacer 50, the clamping structure may be disposed as a clamp hook, and a specific structure of the clamping structure is not particularly limited, so long as the clamping structure can clamp the extension portion 33 to the spacer 50. The extension 33 may also be mounted to the spacer 50 by bolts or screws. The extension 33 may be provided with one of a positioning column and a positioning hole 34, the spacer 50 may be provided with the other of the positioning column and the positioning hole 34, the positioning column penetrates through the positioning hole 34 to realize the pre-positioning of the output member 31 before the mounting hole 22, and the positioning column penetrates through the positioning hole 34 to rivet the positioning column in the positioning hole 34, thereby realizing the riveted connection of the extension 33 and the spacer 50.

In the above technical solution, the extending portion 33 and/or the output member 31 can be fixed to the spacer 50 by adhering, clamping, riveting or screwing the extending portion 33 and/or the output member 31 to a surface of the spacer 50 facing away from the main body 111, so as to realize the pre-positioning of the output member 31 before the output member 31 is mounted in the mounting hole 22, and further reduce the falling risk of the output member 31.

According to some embodiments of the present application, the battery 100 may be a battery pack, and the battery 100 may also be a battery module.

According to some embodiments of the present application, as shown in fig. 1, there is further provided an electric device 200, including the battery 100 of the above embodiment, where the battery 100 is configured to provide electric energy to the electric device 200.

The powered device 200 may be any of the aforementioned devices or systems that employ the battery 100.

According to some embodiments of the present application, as shown in fig. 3, a battery 100 includes: the battery cell stack 10 includes a plurality of battery cells 11, and the plurality of battery cells 11 are stacked in order along a third direction, the end plate 20, the circuit board 30, the first insulating member 41, the second insulating member 42, and the separator 50. The spacer 50 is disposed between the battery cell group 10 and the first insulating member 41, the first insulating member 41 is disposed between the spacer 50 and the end plate 20, the second insulating member 42 is disposed between the output port 311 and the end plate 20, the second insulating member 42 covers the surface of the output port 311 exposed to the mounting hole 22 except for the plugging end face 312, the output member 31 is connected with the extension 33, the output member 31 is mounted in the mounting hole 22, the electrical connection terminal 112 of the battery cell 11 is provided through the through hole 51, and the extension 33 is mounted on the surface of the side of the spacer 50 facing away from the main body 111.

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

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (12)

1. A battery, comprising:

a battery cell group including a plurality of stacked battery cells;

an end plate provided at an end of the battery cell group, the end plate having a mounting portion;

the circuit board is used for collecting at least one signal of the battery cell, one end of the circuit board, which faces the end plate, is connected with an output piece, and the output piece is assembled in the installation part.

2. The battery of claim 1, wherein the end plate includes an inner surface facing the battery cell stack and an outer surface facing away from the battery cell stack, the mounting portion including a mounting hole therethrough, and wherein at least a portion of the output member is exposed to the outer surface of the end plate through the mounting hole.

3. The battery of claim 2, wherein the output member comprises an output interface comprising a mating end face exposed to an outer surface of the end plate.

4. The battery of claim 3, further comprising an insulator, at least a portion of the insulator being located between the end plate and the battery cell stack, the insulator at least partially covering a surface of the output interface exposed to the mounting hole except for the mating end face.

5. The battery according to claim 4, wherein the battery cell includes a main body portion and an electrical connection terminal connected to the main body portion in a first direction, the battery further includes a separator having a through hole penetrating in the first direction, the main body portion is located at one side of the separator, and the electrical connection terminal passes through the through hole to be electrically connected at the other side surface of the separator.

6. The battery of claim 5, wherein the insulating member comprises a first insulating member and a second insulating member, the first insulating member being located between the end plate and the separator, the second insulating member being located between the output interface and the end plate.

7. The battery according to claim 5 or 6, wherein the circuit board includes a base portion and an extension portion, the base portion and the output member being located at two adjacent end faces of the battery cell group, respectively,

the extension portion is bent and extended from the base portion to the output piece so as to be connected to the output piece.

8. The battery of any one of claims 1-4, wherein the circuit board includes a base portion and an extension portion, the base portion and the output member being located on two adjacent end faces of the battery cell group, respectively,

the extension portion is bent and extended from the base portion to the output piece so as to be connected to the output piece.

9. The battery of claim 8, wherein the battery cell stack includes a first mounting end face perpendicular to a first direction and a second mounting end face perpendicular to a second direction, the battery cell stack includes a plurality of battery cells stacked in sequence along a third direction, the first direction, the second direction, and the third direction are perpendicular to each other in pairs,

the first installation end face is provided with the output piece, the base is installed on the second installation end face, and the extension portion bends and extends from the second installation end face towards the first installation end face.

10. The battery according to claim 9, wherein the battery cell includes a main body portion and an electrical connection terminal connected to the main body portion in a first direction, the battery further includes a separator having a through hole penetrating in the first direction, the main body portion is located at one side of the separator, the electrical connection terminal penetrates the through hole to make electrical connection at the other side surface of the separator, and the extension portion and/or the output member is mounted at the side surface of the separator facing away from the main body portion.

11. The battery of claim 10, wherein the extension and/or the output member is bonded, snapped, riveted or screwed to a side surface of the separator facing away from the main body portion.

12. An electrical device comprising a battery as claimed in any one of claims 1 to 11 for providing electrical energy to the electrical device.

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