CN218867310U

CN218867310U - Battery module, battery and power consumption device

Info

Publication number: CN218867310U
Application number: CN202222790770.3U
Authority: CN
Inventors: 林新炜; 李玲玉
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-04-14
Anticipated expiration: 2032-10-21

Abstract

The application provides a battery module, battery and power consumption device, the battery module includes: a battery cell group including a plurality of battery cells stacked in a first direction; the first sampling assembly comprises a first circuit board and a first connector connected with the first circuit board, the first circuit board is used for collecting signals of the battery monomer group, and the first connector is used for outputting the signals collected by the first circuit board; the first end plate is arranged on one side of the battery monomer group along the first direction; wherein the first connector is mounted to the first end plate. According to the technical scheme, the mounting stability and reliability of the first connector are effectively improved, and the sampling performance stability is improved.

Description

Battery module, battery and power consumption device

Technical Field

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

Background

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

The acquisition of signals such as voltage and temperature of the battery is important for ensuring the safety of the battery. How to improve the sampling stability is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The application provides a battery module, battery and electric installation, and this battery module can effectively improve sampling stability.

In a first aspect, the present application provides a battery module, including: a battery cell group including a plurality of battery cells stacked in a first direction; the first sampling assembly comprises a first circuit board and a first connector connected with the first circuit board, the first circuit board is used for collecting signals of the battery monomer group, and the first connector is used for outputting the signals collected by the first circuit board; the first end plate is arranged on one side of the battery monomer group along the first direction; wherein the first connector is mounted to the first end plate.

In the technical scheme, the first connector of the sampling assembly is mounted on the first end plate (used for limiting and fastening the battery monomer group and usually arranged on the periphery of the battery monomer group) of the battery module, and the first end plate can provide a supporting base body with higher strength and more stability for the first connector, so that the mounting stability and the mounting reliability of the first connector are effectively improved, the structure and the connection stability of the whole sampling assembly are further effectively improved, and the sampling performance stability is favorably improved; in addition, first terminal plate can provide great mounted position and space for first connector, effectively alleviate because of sampling subassembly itself mounted space is not enough, mounted position intensity is not enough, the sampling subassembly is not convenient for carry on the problem that complexity processing scheduling problem caused first connector installation of being not convenient for is fixed and the problem of connecting, make things convenient for the installation operation of first connector and make things convenient for first connector and other control system's butt joint when improving first connector installation stability, improve the convenience and the maneuverability of sampling subassembly in groups in battery module, be favorable to controlling sampling subassembly group yield, guarantee sampling stability.

According to some embodiments of the present application, the first end plate comprises: an end plate body; the first support, set up in the end plate body deviates from one side of battery monomer group, first connector is installed in first support.

Among the above-mentioned technical scheme, a first support for installing first connector is arranged in one side that deviates from battery monomer group of end plate body, first support is arranged in the outside of first end plate promptly, can effectively avoid battery monomer group to cause the interference to the installation and the connection of first connector, further improve the convenience of sampling subassembly in battery module in groups, simultaneously, can effectively avoid battery monomer group to occupy the mounted position of first connector, effectively ensured the installation space of first connector.

According to some embodiments of the application, one of the first connector and the first bracket is provided with a clamping portion, the other of the first connector and the first bracket is provided with a matching portion, and the clamping portion is in clamping fit with the matching portion.

Among the above-mentioned technical scheme, first connector and first support pass through joint portion and cooperation portion joint, and the mounting means of joint can effectively ensure the spacing stability after the installation of first connector, and simultaneously, the mounting means of joint can further improve the installation of first connector, the convenience of dismantlement, effectively improves battery module's efficiency in groups.

According to some embodiments of the application, the clamping portion is a clamping hook arranged on the outer surface of the first connector, and the matching portion is a clamping hole arranged on the first bracket.

Among the above-mentioned technical scheme, set up the pothook at the surface of first connector, set up in pothook complex card hole on first support, install first connector in first support after, the pothook card of first connector surface is gone into the card hole of first support to fix first connector on first support.

According to some embodiments of the application, the first bracket comprises: the first side wall is arranged opposite to the end plate body along a first direction, and the clamping hole is formed in the first side wall; a first bottom wall connecting the end plate body and the first side wall; the first bottom wall, the first side wall and the end plate body are encircled to form an accommodating cavity, and the first connector is inserted into the accommodating cavity.

Among the above-mentioned technical scheme, first support and end plate body surround and form the holding chamber, and first connector is inserted and is located the holding intracavity for first support plays the structure to first connector spacing and guard action, reduces the risk that other parts of battery collided first connector, further improves the structural stability of sampling subassembly.

According to some embodiments of the present application, the first bracket further comprises: the second side wall is arranged adjacent to the first side wall along a second direction, the second direction is vertical to the first direction, and the first bottom wall is connected with the end plate body and the second side wall; the second side wall is closer to the end plate body than the first side wall, and a channel for allowing the first circuit board to pass is formed between the second side wall and the end plate body.

Among the above-mentioned technical scheme, the second lateral wall is closer to the end plate body than first lateral wall, forms the passageway that holds first circuit board and pass between second lateral wall and the end plate body, and the setting of second lateral wall plays certain restraint and limiting displacement to the first circuit board of being connected with first connector, is favorable to improving the stability of the relative position of first circuit board and first connector to be favorable to further improving the installation stability of first connector.

According to some embodiments of the present application, an end plate body includes: a substrate; the output electrode fixing seat protrudes out of one side of the substrate, which is far away from the battery monomer group, and is used for fixing an output electrode of the battery monomer group; the output electrode fixing seat is provided with a first surface deviating from the substrate, and the first support is connected to the first surface.

Among the above-mentioned technical scheme, the output pole fixing base of battery monomer group sets up on first end plate, is favorable to improving the fixed reliability of the output pole of battery monomer group, and simultaneously, first leg joint is in the first surface of output pole fixing base for the structure integrated nature of first end plate is strong, is convenient for simplify the production technology of first end plate, and simultaneously, be convenient for in the battery unified reserve accommodation space and the installation space in groups, effectively reduce the space extravagant.

According to some embodiments of the present application, the first circuit board is disposed at one side of the battery cell group along a second direction, and the first direction is perpendicular to the second direction.

Among the above-mentioned technical scheme, first circuit board sets up in the one side of battery monomer group along the second direction, effectively avoids setting up the first end plate of one side of battery monomer group along first direction to cause the interference to being connected of first circuit board and battery monomer group to further improve the convenience of sampling in groups, guarantee sampling stability.

According to some embodiments of the present application, each of the battery cells includes a first electrode terminal, and the battery module further includes: at least one first confluence piece is arranged on one side of the battery monomer group along the second direction, the first confluence piece is connected with the first electrode terminals of the two battery monomers, and the first confluence piece is connected with the first circuit board.

Among the above-mentioned technical scheme, battery module sets up first piece that converges to in series connection or parallelly connected between a plurality of battery monomer of battery module are realized through first piece that converges, first circuit board is connected with battery monomer through first piece that converges, with the signal of gathering battery monomer.

According to some embodiments of the present application, the battery module further includes: the first insulating piece is arranged between the first circuit board and the first bus piece, an opening is formed in the first insulating piece, the first bus piece comprises an exposed area exposed out of the opening, and the exposed area is connected with the first circuit board.

Among the above-mentioned technical scheme, set up the insulating part between first circuit board and the first piece that converges to effectively reduce first circuit board or other spare parts because of the unusual risk that drops, warp etc. and take place the short circuit with the battery monomer of battery module, and first insulating part can play the supporting role to first circuit board, thereby further improve the structural stability and the connection stability of sampling subassembly, and then improve the wholeness can stability of sampling subassembly.

According to some embodiments of the present application, the battery module includes a plurality of first bus bars, and the first insulating member is provided with a plurality of openings corresponding to the first bus bars one to one.

Among the above-mentioned technical scheme, first insulating part sets up a plurality of openings, a plurality of openings and a plurality of first piece one-to-ones that converge to in every piece homoenergetic can form the exposed district of being connected with first circuit board that converges, effectively ensure the sampling subassembly to the free sampling sufficiency of a plurality of batteries of battery monomer group, and then improve the sampling performance stability of sampling subassembly.

According to some embodiments of the present application, the first circuit board includes a first circuit board main body and a plurality of first sampling portions extending from the first circuit board main body, the first connector is connected to the first circuit board main body, and the first sampling portions are connected to the exposed area in a one-to-one correspondence.

Among the above-mentioned technical scheme, first circuit board sets up a plurality of sampling portions that converge piece one-to-one with first to further ensure the sampling sufficiency, simultaneously, be favorable to reducing the structure size of first circuit board main part, and be convenient for first circuit board and the first connection operation that converges, and then be favorable to improving the stability of performance of sampling subassembly.

According to some embodiments of the present application, the first circuit board is fixed to the first insulating member.

Among the above-mentioned technical scheme, first circuit board is fixed in first insulating part, and first insulating part plays good spacing, supporting role to first circuit board, improves the positional stability of first circuit board to be favorable to the overall structure's of guarantee sampling subassembly connection stability, and then effectively improve sampling performance stability.

According to some embodiments of the present application, each of the battery cells further includes a housing including a first wall, the first electrode terminal being disposed on the first wall, and the first direction being parallel to a thickness direction of the first wall.

In the above technical solution, the first direction is parallel to the thickness direction of the first wall, that is, the first wall is located on one side of the battery cell along the first direction, and the first electrode terminal is disposed on the first wall and located on one side of the battery cell along the stacking arrangement direction of the battery cells.

According to some embodiments of the present application, the first bus bar comprises: the second bottom wall is connected with the first circuit board; the two third side walls are oppositely arranged along the first direction, the second bottom wall is connected with the two third side walls, and one ends of the two third side walls, which are deviated from the second bottom wall, are respectively connected with the first electrode terminal of one battery cell.

Among the above-mentioned technical scheme, two third lateral walls of first piece that converge are convenient for and set up the first electrode terminal that is connected in the free one side of following first direction of battery to effectively improve the stability of being connected of first piece and first electrode terminal that converges, and then be favorable to guaranteeing the stability that sampling subassembly and battery monomer electricity are connected, improve sampling performance stability.

According to some embodiments of the application, the first wall is the largest area wall of all walls of the housing.

Among the above-mentioned technical scheme, first wall is the big face of shell, that is to say that first electrode terminal sets up in the free big face of battery and is located the free one side of arranging the direction along its range upon range of battery, compares in the structure that traditional first electrode terminal set up in the free narrow face of battery, and this application technical scheme can effectively improve first electrode terminal's size stable in structure, and is favorable to further improving the connection stability of first electrode terminal and sampling subassembly.

According to some embodiments of the present application, the battery module further includes: the second sampling assembly is arranged on the other side of the battery monomer group along the second direction and comprises a second circuit board and a second connector connected with the second circuit board, the second circuit board is used for collecting signals of the battery monomer group, and the second connector is used for outputting the signals collected by the second circuit board.

Among the above-mentioned technical scheme, all set up a sampling subassembly in the both sides of battery module along the second direction to in the signal of the battery module of battery monomer both sides is located respectively to the anodal of gathering the battery monomer and negative pole, simple structure, arrange nimble easy adjustment.

According to some embodiments of the present application, the second connector is mounted to the first end plate.

Among the above-mentioned technical scheme, the first connector of first sampling subassembly and the second connector of second sampling subassembly are all installed in first end plate, are convenient for ensure the installation stability and the connection simple operation nature of first connector and second connector simultaneously to further improve battery module's sampling stability. And, the integrated nature of whole battery module's sampling structure is strong, effectively avoids first sampling subassembly and second sampling subassembly to occupy the exterior space of too much battery module.

According to some embodiments of the present application, the battery module further includes: the control panel is installed in first end plate, and first connector and second connector all are connected with the control panel electricity.

Among the above-mentioned technical scheme, set up the control panel and be used for the final acquisition information who exports the sampling subassembly, control panel, first connector and second connector all set up in first end plate, are favorable to reducing first connector, second connector and connect in the connection route of controller, further improve the convenience in groups of sampling subassembly. Meanwhile, the installation position is high in concentration, installation and maintenance are facilitated, and the situation that the energy density of the battery is influenced due to the fact that each component occupies multiple positions of the battery is avoided.

According to some embodiments of the present application, the battery module further includes a second end plate disposed at the other side of the battery cell stack in the first direction.

Among the above-mentioned technical scheme, the battery module is including setting up in the first end plate and the second end plate of the relative both sides along the first direction of battery monomer group to effectively improve the spacing stability of battery monomer group, be favorable to guaranteeing the free position fixity of each battery of battery monomer group, and then be favorable to guaranteeing the connection stability of battery monomer and sampling subassembly, improve sampling performance stability.

In a second aspect, the present application also provides a battery comprising: the battery module of any preceding scheme.

In a third aspect, the application further provides an electric device, which includes the battery module in any of the above schemes, and the battery module is used for providing electric energy; or, the battery of the above scheme is included, and the battery is used for providing electric energy.

Drawings

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

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

fig. 2 is a schematic diagram of an internal structure of a battery according to some embodiments of the present disclosure;

fig. 3 is a schematic structural view of a battery module according to some embodiments of the present disclosure;

fig. 4 is an exploded view of a battery module according to some embodiments of the present application;

fig. 5 is a partially enlarged view of a portion a shown in fig. 3;

fig. 6 is a partially enlarged view of a portion B shown in fig. 4;

fig. 7 is a front view of a battery module according to some embodiments of the present disclosure;

fig. 8 is a partial exploded view of a battery cell stack according to some embodiments of the present disclosure.

An icon: 1000-a vehicle; 100-a battery; 10-a battery module; 1-a battery cell; 11-a first wall; 12-a first electrode terminal; 13-a second electrode terminal; 2-a first sampling assembly; 21-a first circuit board; 211-a first circuit board body; 212-a sampling section; 22-a first connector; 221-hook; 3-a first end plate; 31-an end plate body; 311-a substrate; 312-output pole fixing base; 3121-a first surface; 32-a first bracket; 321-a first bottom wall; 322-a first side wall; 3221-card hole; 323-a second sidewall; 324-a housing chamber; 33-a second support; 4-a first bus bar; 41-a second bottom wall; 42-a third side wall; 43-bare area; 5-a first insulator; 51-an opening; 6-a second sampling component; 61-a second circuit board; 62-a second connector; 7-a control panel; 8-a second end plate; 9-a second insulator; 20-a side wall; 200-a controller; 300-motor.

X-a first direction; y-a second direction; z-a third direction.

Detailed Description

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

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

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

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

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

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

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

In the description of the embodiments of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, and are used for convenience in describing the embodiments of the present application and for simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection and signal connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

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

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

The battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited in the embodiments of the present application. The battery cell may be a flat body, a rectangular parallelepiped, or other shapes, which is not limited in the embodiments of the present application.

The battery monomer comprises an electrode assembly and electrolyte, wherein the electrode assembly comprises a positive pole piece, a negative pole piece and an isolating membrane. The battery cell mainly depends on metal ions to move between the positive pole piece and the negative pole piece to work.

The acquisition of signals such as voltage and temperature of the battery is important for ensuring the safety of the battery. How to ensure the sampling stability is a problem to be solved urgently.

The applicant has analytically noted that more and more battery sampling structures adopt FPC (Flexible Printed Circuit) for sampling, and the sampling structures generally include a Flexible Circuit board body and an output member (also referred to as a connector) of the Flexible Circuit board body, and the connector is used as an output terminal of the Flexible Circuit board body for outputting signals of the Flexible Circuit board. Generally, a mounting position for mounting a connector is provided on an insulating member for insulating and isolating the flexible circuit board and the battery cell, so as to limit the connector. However, along with the improvement of battery energy density demand, the insulating part is more can adopt the size little, the sheet structure of thickness thin, on the one hand, can't improve sufficient installation space for the connector, on the other hand, be not convenient for carry out complexity processing, and the insulating part structure is yielding itself, therefore, spacing performance to the connector is poor, the spacing stability of unable effective guarantee connector, the connector is because of the insulating part warp easily, the location is unstable, reasons such as external force factor take place to shift, unusual such as drop, thereby cause easily that to connect between each part of whole sampling subassembly not hard up, and then the stability of the sampling performance of direct influence battery module. And the sampling assembly has a compact integral structure, is not convenient for the connection operation of the connector, is not favorable for the control of grouped yield, and also has the risk of influencing the stability of sampling performance.

Based on above consideration, in order to effectively improve the spacing stability and the convenience of in groups of sampling subassembly's connector to effectively improve the sampling performance stability of battery module, the applicant has designed a battery module through the research, and the battery module includes first sampling subassembly, and the first connector of first sampling subassembly is installed in setting up at the peripheral first end plate of battery module.

In the technical scheme, the first end plate can provide a supporting base body with higher strength and more stability for the first connector, so that the mounting and limiting stability and reliability of the first connector are effectively improved, the structure and the connection stability of the whole sampling assembly are further effectively improved, and the stability of the sampling performance is favorably improved; in addition, first terminal plate can provide great mounted position and space for first connector, effectively alleviate because of sampling assembly itself mounted space is not enough, mounted position intensity is not enough, the sampling assembly is not convenient for carry on the problem that complexity processing scheduling problem caused the first connector installation of being not convenient for is fixed and the problem of connecting, make things convenient for the installation operation of first connector and make things convenient for first connector and other control system's butt joint when improving first connector installation stability, improve the convenience and the maneuverability of sampling assembly in groups in battery module, be favorable to controlling sampling assembly group yield, guarantee sampling stability.

The battery module or the battery disclosed in the embodiment of the application can be used in electric equipment such as vehicles, ships or aircrafts but not limited thereto, and the battery module or the battery disclosed in the embodiment of the application can be used for forming a power supply system of the electric equipment, so that the service life and the use performance of the battery can be effectively prolonged.

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

The battery module or the battery described in the embodiments of the present application is not limited to be applied to the above-described electric devices, but may be applied to all electric devices using batteries.

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

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

Referring to fig. 2, fig. 2 is a schematic diagram of an internal structure according to some embodiments of the present disclosure; the battery 100 includes one or more battery modules 10, the battery module 10 includes a plurality of battery cells, the plurality of battery cells may be connected in series, in parallel, or in series-parallel to constitute the battery module 10, and when the battery 100 includes the plurality of battery modules 10, the plurality of battery modules 10 may be connected in series, in parallel, or in series-parallel to constitute the battery 100.

The battery module 10 may be accommodated in a case, which is used to provide an accommodation space for the battery module 10, and may have various structures. In some embodiments, the case may include a first portion and a second portion, the first portion and the second portion cover each other to form a battery cavity, and the plurality of battery modules 10 are disposed in the battery cavity. Wherein the first and second portions may have shapes according to the shape of a combination of a plurality of battery cells, and the first and second portions may each have one opening. For example, the first part and the second part can be hollow cuboids, only one surface of each part is an opening surface, the openings of the first part and the second part are oppositely arranged, and the first part and the second part are mutually buckled to form a box body with a closed cavity.

In other embodiments, the box body may include a top wall (not shown), a side wall 20, and a bottom wall (not shown), where the top wall and the bottom wall are disposed opposite to each other, the side wall surrounds the bottom wall and is a hollow structure with two open ends, an inner cavity of the side wall forms an accommodating cavity, the side wall connects the top wall and the bottom wall, and the side wall 20, the top wall, and the bottom wall jointly define an accommodating space that can accommodate the battery module 10.

Referring to fig. 3 to 7, fig. 3 is a schematic structural view of a battery module according to some embodiments of the present disclosure; fig. 4 is an exploded view of a battery module according to some embodiments of the present application; fig. 5 is a partially enlarged view of a portion a shown in fig. 3; fig. 6 is a partially enlarged view of a portion B shown in fig. 4; fig. 7 is a front view of a battery module according to some embodiments of the present disclosure; some embodiments of the present application provide a battery module 10, where the battery module 10 includes a battery cell set, a first sampling assembly 2, and a first end plate 3, where the battery cell set includes a plurality of battery cells 1 stacked in a first direction X; the first sampling assembly 2 comprises a first circuit board 21 and a first connector 22 connected with the first circuit board 21, wherein the first circuit board 21 is used for collecting signals of the battery cell group, and the first connector 22 is used for outputting the signals collected by the first circuit board 21. The first end plate 3 is disposed at one side of the battery cell group in the first direction X, wherein the first connector 22 is mounted to the first end plate 3.

The battery cell group 10 includes a plurality of battery cells 1, and the plurality of battery cells 1 may be connected in series or in parallel or in series-parallel (the series-parallel refers to that the plurality of battery cells 1 are connected in series or in parallel) to form the battery cell group 10.

The first circuit board 21 is a supporting body for various electronic components, and is a carrier for interconnecting the electronic components, the first circuit board 21 may be a printed circuit board, a flexible circuit board, or the like, for example, the first circuit board 21 is a flexible circuit board, the first circuit board 21 may include a collecting end for collecting signals to collect voltage of the battery cell group, and of course, the first circuit board 21 may also integrate a temperature collecting unit (for example, a temperature sensor) to collect a temperature signal of the battery cell group.

The first connector 22 is an output end of the first circuit board 21, and the first connector 22 can transmit the signal of the battery cell pack collected by the first circuit board 21 to a control system or a management system disposed outside the battery module 10 or outside the battery 100 through a signal harness plugged with the first connector 22.

The first end plate 3 is used for limiting and fastening the battery monomer group so as to play a role in fastening and limiting a plurality of battery monomers 1 of the battery monomer group 10 and limit the movement of the battery monomer group 10 in the box body.

The first end plate 3 may be made of plastic such as nylon, and glass fiber, or conventional metal such as aluminum and aluminum alloy, and the first end plate 3 may be an injection-molded part or a die-cast part.

There are various embodiments for mounting the first connector 22 on the first end plate 3, for example, the first connector 22 may be fixed on the first end plate 3 by a fastener such as a screw, a strap, etc., the first connector 22 may be adhered to the first end plate 3 by glue, etc.

Also, it is understood that the first connector 22 may be installed at different positions of the first end plate 3, for example, the first connector 22 may be installed at one side of the first end plate 3 along the first direction X, at one side of the first end plate 3 along the second direction Y, and at one side of the first end plate 3 along the third direction Z, where the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

The first connector 22 of the first sampling assembly 2 is mounted on the first end plate 3 of the battery module 10, and the first end plate 3 can provide a supporting base body with higher strength and more stability for the first connector 22, so that the mounting and limiting stability and reliability of the first connector 22 are effectively improved, the structure and connection stability of the whole sampling assembly are further effectively improved, and the stability of sampling performance is favorably improved; in addition, first terminal plate 3 can provide great mounted position and space for first connector 22, effectively alleviate because of sampling assembly itself mounted space is not enough, mounted position intensity is not enough, the sampling assembly is not convenient for carry on the problem that complexity processing scheduling problem caused be not convenient for first connector 22 installation fixed and the problem of connecting, make things convenient for the installation operation of first connector 22 and make things convenient for first connector 22 and other control system's butt joint when improving first connector 22 installation stability, improve the convenience and the maneuverability of sampling assembly in battery module 10 in groups, be favorable to controlling sampling assembly group yield, guarantee sampling stability.

According to some embodiments of the present application, as shown in fig. 3 and 4, the first end plate 3 includes an end plate body 31 and a first bracket 32, the first bracket 32 is disposed on a side of the end plate body 31 facing away from the battery cell group, and the first connector 22 is mounted to the first bracket 32.

Specifically, the end plate body 31 may have a substantially plate-like structure, the thickness direction of the end plate body 31 is parallel to the first direction X, and the end plate body 31 is adjacent to the outermost one of the battery cells 1 of the battery cell group in the first direction X.

The first bracket 32 is disposed on a side of the end plate body 31 away from the battery cell group, and the first bracket 32 may be implemented in various manners, for example, the first bracket 32 may be a plate-shaped structure, a column-shaped structure, or the like for supporting the first connector 22, and the first bracket 32 may also be a hollow structure with at least one end opening 51 for inserting the first connector 22, or the like.

Of course, the first bracket 32 may be integrally formed with the end plate body 31, or the first bracket 32 may be provided separately from the end plate body 31 and connected thereto by welding, screwing, bonding, or the like.

A first support 32 for installing first connector 22 sets up in one side that deviates from battery monomer group of end plate body 31, first support 32 sets up in the outside of first end plate 3 promptly, can effectively avoid battery monomer group to cause the interference to the installation and the connection of first connector 22, further improve the convenience of sampling subassembly in battery module 10 in groups, simultaneously, can effectively avoid battery monomer group to occupy the mounted position of first connector 22, first connector 22's installation space has effectively been ensured.

According to some embodiments of the present application, one of the first connector 22 and the first bracket 32 is provided with a snap-fit portion, and the other of the first connector 22 and the first bracket 32 is provided with a mating portion, the snap-fit portion snap-fitting with the mating portion.

Specifically, the first connector 22 may be provided with a snap-in portion, while the first bracket 32 is provided with a fitting portion that fits with the snap-in portion. Alternatively, the first holder 32 may be provided with a snap-in portion, and the first connector 22 may be provided with a mating portion that mates with the snap-in portion.

For example, the clamping portion may be a protrusion protruding from the first connector 22 or the first bracket 32, and correspondingly, the matching portion may be a clamping groove or the like formed in the first connector 22 or the first bracket 32, and the implementation structures of the clamping portion and the matching portion will be described below.

First connector 22 and first support 32 pass through joint portion and cooperation portion joint, and the mounting means of joint can effectively ensure spacing stability after first connector 22 installs, and simultaneously, the mounting means of joint can further improve the convenience of the installation of first connector 22, dismantlement, effectively improves battery module 10's efficiency in groups.

According to some embodiments of the present application, as shown in fig. 5 and 6, the locking portion is a hook 221 disposed on an outer surface of the first connector 22, and the matching portion is a locking hole 3221 disposed on the first bracket 32.

Specifically, the outer surface of the first connector 22 is provided with the hook 221, the hook 221 can be integrally formed with the housing of the first connector 22, meanwhile, the first bracket 32 is provided with a hook hole 3221, and the hook 221 is conveniently inserted into the hook hole 3221, so that the connector is clamped and limited to the first bracket 32.

One end of the hook 221 is connected to the first connector 22, the other end of the hook 221 forms a free end that can be inserted into the locking hole 3221, the locking hole 3221 can be disposed on a surface of the first connector 22 adjacent to the surface on which the hook 221 is disposed, and the locking hole 3221 can be a hole structure with a conventional shape such as a circular hole or a rectangular hole.

Hooks 221 are disposed on the outer surface of the first connector 22, and fastening holes 3221 matched with the hooks 221 are disposed on the first support 32, so that after the first connector 22 is mounted on the first support 32, the hooks 221 on the outer surface of the first connector 22 are fastened into the fastening holes 3221 of the first support 32, so as to fix the first connector 22 on the first support 32.

According to some embodiments of the present application, as shown in fig. 5 and 6, the first bracket 32 includes a first sidewall 322 and a first bottom wall 321, the first sidewall 322 is disposed opposite to the end plate body 31 along the first direction X, and the chucking hole 3221 is disposed at the first sidewall 322; the first bottom wall 321 connects the end plate body 31 and the first side wall 322; the first bottom wall 321, the first side wall 322 and the end plate body 31 surround to form an accommodating cavity 324, and the first connector 22 is inserted into the accommodating cavity 324.

As shown in fig. 5, one end of the hook 221 is connected to a surface of the first connector 22 facing the first sidewall 322, the other end of the hook 221 may be inclined from bottom to top along the third direction Z toward a direction (the first direction X shown in the figure) away from the first connector 22 to form a free end, the locking hole 3221 is disposed on the first sidewall 322, when the first connector 22 is installed, the first connector 22 may be inserted into the accommodating cavity 324 from top to bottom along the third direction Z shown in the figure, during which, the free end of the hook 221 is constrained by the first sidewall 322 and deforms toward the surface of the first connector 22 until the hook 221 enters the locking hole 3221, the acting force exerted on the hook 221 by the first sidewall 322 disappears, the hook 221 rebounds to reset, and the free end of the hook 221 extends into the locking hole 1, so that the hook 221 is locked with the first sidewall 322, and the first connector 22 is thereby limited on the first support 32232.

The first support and the end plate body 31 surround to form an accommodating cavity 324, and the first connector 22 is inserted into the accommodating cavity 324, so that the first support has a structural limiting and protecting effect on the first connector 22, the risk that other parts of the battery 100 collide with the first connector 22 is reduced, and the structural stability of the sampling assembly is further improved.

According to some embodiments of the present disclosure, with continued reference to fig. 5 and 6, the first bracket 32 may further include a second side wall 323, the second side wall 323 is disposed adjacent to the first side wall 322 along a second direction Y, the second direction Y is perpendicular to the first direction X, the first bottom wall 321 connects the end plate body 31 and the second side wall 323, and the second side wall 323 is closer to the end plate body 31 than the first side wall 322. The second side wall 323 and the end plate body 31 form therebetween a passage that accommodates the first circuit board 21 therethrough.

The second side wall 323 is disposed opposite to the end plate body 31 with a distance between the second side wall 323 and the end plate body 31 smaller than a distance between the first side wall 322 and the end plate body 31, and the second side wall 323 may be parallel to the first side wall 322 and connected to each other by a connecting wall.

When the first connector 22 is installed, the first connector 22 may be inserted into the accommodating cavity 324 from top to bottom along a third direction Z shown in the drawing, in this process, one end of the first circuit board 21 connected to the first connector 22 may be clamped into a channel between the second side wall 323 and the end plate body 31, the second side wall 323 and the end plate body 31 play a role in restricting and limiting the first circuit board 21 to some extent, which is beneficial to improving the stability of the relative position of the first circuit board 21 and the first connector 22, and thus, is beneficial to further improving the installation stability of the first connector 22.

According to some embodiments of the present application, the end plate body 31 includes a base plate 311 and an output electrode fixing base 312; the output electrode fixing seat 312 protrudes from one side of the substrate 311 away from the battery cell group, and the output electrode fixing seat 312 is used for fixing an output electrode of the battery cell group; the output electrode fixing base 312 has a first surface 3121 facing away from the substrate 311, and the first support 32 is connected to the first surface 3121.

An output electrode (not shown) of the battery cell group is used for outputting electric energy of the battery cell group, and the output electrode of the battery cell group is electrically connected with the battery cell 1 of the battery cell group. Because the output electrode is a conventional component of the battery module for outputting the electric energy of the battery, the structure of the output electrode is not described in detail or limited uniquely in the embodiments of the present application.

The output electrode fixing base 312 is used for mounting the output electrode and fixing the position of the output electrode, and the output electrode fixing base 312 may be integrally formed with the substrate 311, or may be separately disposed from the substrate 311 and connected and fixed by means of clamping, bonding, welding, or the like.

The first bracket 32 is connected to the first surface 3121 of the output pole fixing base 312, based on the embodiment that "the first bracket 32 includes a first bottom wall 321 and a first side wall 322, the first side wall 322 is disposed opposite to the end plate body 31, and the first bottom wall 321 connects the end plate body 31 and the first side wall 322", the first side wall 322 may be disposed opposite to the first surface 3121 along the first direction X, one end of the first bottom wall 321 is connected to the first surface 3121 of the output pole fixing base 312, the other end is connected to the first side wall 322, and the first surface 3121, the first bottom wall 321, and the first side wall 322 surround to form the above-mentioned accommodating cavity 324.

Output pole fixing base 312 of battery cell group sets up on first end plate 3, be favorable to improving the fixed reliability of the output pole of battery cell group, and simultaneously, first support 32 is connected in output pole fixing base 312's first surface 3121, make first end plate 3's structure integrated nature strong, be convenient for simplify first end plate 3's production technology, and simultaneously, be convenient for unify in battery 100 and reserve accommodation space and installation space in groups, effectively reduce battery 100's space extravagant.

According to some embodiments of the present application, the first circuit board 21 is disposed at one side of the battery cell group 10 along a second direction Y, and the first direction X is perpendicular to the second direction Y.

First circuit board 21 sets up in one side of the edge second direction Y of battery cell group 10, can effectively avoid setting up and cause the interference to being connected of first circuit board 21 and battery cell group 10 at the first terminal plate 3 of battery cell group 10 along one side of first direction X to further improve the convenience of sampling in groups, guarantee sampling stability.

According to some embodiments of the present application, referring again to fig. 3 and 4, each battery cell 1 includes a first electrode terminal 12, and the battery module 10 further includes: and at least one first bus bar 4 disposed at one side of the battery cell group along the second direction Y, the first bus bar 4 connecting the first electrode terminals 12 of the two battery cells 1, and the first bus bar 4 connected to the first circuit board 21.

The first electrode terminal 12 is used to draw out electric power from the battery cell 1, and in a broad sense, the first electrode terminal 12 is used to output or input electric power from the battery cell 1.

It is understood that each battery cell 1 may include a positive electrode terminal and a negative electrode terminal, and the first electrode terminal 12 may be either the positive electrode terminal of the battery cell 1 or the negative electrode terminal of the battery cell 1.

The first bus bar 4 is a member capable of connecting the plurality of battery cells 1 in series or in parallel to achieve electrical connection between the plurality of battery cells 1 of the battery cell group. The first bus bar 4 may also be called a bus bar, a bus bar or a bus bar, the first bus bar 4 may have a sheet metal structure, the three-dimensional shape of the first bus bar 4 may be flexibly designed according to the position of the first electrode terminal 12 on the battery cell 1, and the first bus bar 4 and the electrode lead-out assembly may be connected in the directions of welding, conductive adhesive bonding, etc. so as to achieve the purpose of connecting the plurality of battery cells 1 in series or in parallel.

It is understood that the first bus bar 4 may connect two battery cells 1 adjacently disposed along the first direction X, or may connect any two battery cells 1 spaced apart along the first direction X. Illustratively, the first bus bar 4 connects the first electrode terminals 12 of two battery cells 1 adjacent in the first direction X.

In addition, the polarities of the first electrode terminals 12 of the two battery cells 1 connected to the same first bus bar 4 may be the same or opposite, when the polarities of the first electrode terminals 12 of the two battery cells 1 connected to the first bus bar 4 are the same, the two battery cells 1 are connected in parallel by the first bus bar 4, and when the polarities of the first electrode terminals 12 of the two battery cells 1 connected to the first bus bar 4 are the same, the two battery cells 1 are connected in series by the first bus bar 4. Illustratively, the first bus bar 4 connects the first electrode terminals 12 of two battery cells 1 adjacent in the first direction X, and the two first electrode terminals 12 are opposite in polarity.

The battery module 10 is provided with the first bus bar 4, so that the plurality of battery cells 1 of the battery module 10 are connected in series or in parallel through the first bus bar 4, and the first circuit board 21 is connected with the battery cells 1 through the first bus bar 4 to collect signals of the battery cells 1.

According to some embodiments of the present application, please continue to refer to fig. 3 and 4, and further refer to fig. 7, in which fig. 7 is a front view of a battery module provided in some embodiments of the present application; the battery module 10 further includes a first insulating member 5, the first insulating member 5 is disposed between the first circuit board 21 and the first bus bar 4, the first insulating member 5 is opened with an opening 51, the first bus bar 4 includes an exposed area 43 exposed from the opening 51, and the exposed area 43 is connected to the first circuit board 21.

The first insulating member 5 is an insulating member disposed between the battery cell 1 and the first circuit board 21 and other components, and is used for preventing the first circuit board 21 or other components from short-circuiting the battery cell 1 due to abnormal falling or deformation. Of course, the first insulating member 5 may also be used for carrying and supporting the first circuit board 21 or other related components.

The first insulating member 5 is opened with an opening 51, and the opening 51 is configured to provide an escape position for the connection of the first circuit board 21 and the first bus bar 4, so that the first circuit board 21 is connected with the first bus bar 4. It can be understood that, after the battery modules 10 are grouped, the exposed region 43 is formed at a position of the first bus bar 4 corresponding to the opening 51 of the first insulating member.

The number and the position of the openings 51 may correspond to the first bus bar 4, when the first bus bar 4 is provided with one, the openings 51 may be provided with one, and when the first bus bar 4 is provided with a plurality, the openings 51 may be provided in a plurality and in one-to-one correspondence with the first bus bar 4. Of course, the size of the opening 51 may be enlarged so that the plurality of first bus bars 4 each have the exposed area 43.

Set up first insulating part 5 between first circuit board 21 and first piece 4 that converges to effectively reduce first circuit board 21 or other spare parts because of the unusual risk that drops, warp etc. therefore take place the short circuit with battery cell 1 of battery module 10, and first insulating part 5 can play the supporting role to first circuit board 21, thereby further improve the structural stability and the connection stability of sampling subassembly, and then improve the overall performance stability of sampling subassembly.

According to some embodiments of the present application, as shown in fig. 7, the battery module 10 includes a plurality of first bus members 4, the first insulating member 5 is provided with a plurality of openings 51, and the openings 51 correspond to the first bus members 4 one to one.

Specifically, the battery cell group of the battery module 10 may include more than two battery cells 1, and the two battery cells 1 are connected by one first bus bar member, so that the plurality of battery cells 1 of the battery cell group are connected.

The first insulating member 5 is provided with a plurality of openings 51 corresponding to the first bus-bar members 4 one by one, so that each first bus-bar member 4 is provided with the exposed area 43 more accurately and covers the position of the non-exposed area 43, thereby avoiding the influence of too little exposed area 43 on the connection of the first bus-bar members 4 and the first circuit board 21 or avoiding the influence of too large size of one opening 51 on the insulating and isolating effect of the first insulating member 5. Effectively ensure the sampling subassembly to a plurality of battery monomer 1's of battery monomer group the sampling sufficiency, improve the sampling performance stability of sampling subassembly.

According to some embodiments of the present application, as shown in fig. 3 and 4 and fig. 7, the first circuit board 21 includes a first circuit board main body 211 and a plurality of first sampling portions 212 extending from the first circuit board main body 211, the first connector 22 is connected to the first circuit board main body 211, and the first sampling portions 212 are connected to the exposed areas 43 in a one-to-one correspondence manner.

Specifically, the sampling portion 212 may also be referred to as a sampling sheet lead terminal or the aforementioned sampling terminal, the material of the sampling portion 212 is a conductor, and the sampling portion 212 and the exposed region 43 of the first bus bar 4 may be electrically connected by welding, conductive adhesive bonding, or the like. Illustratively, the sampling part 212 may be a nickel plate, one end of which is connected to the first circuit board 21 and the other end of which is soldered to the exposed region 43 of the first bus bar 4. One first bus member 4 corresponds to one sampling portion 212.

The sampling portions 212 may extend from the same side of the first circuit board body 211, or may be spaced apart from each other in the circumferential direction of the first circuit board body 211.

Illustratively, as shown in fig. 3 and 4, a plurality of battery cells 1 of the battery cell set are stacked along a first direction X, each first bus bar 4 connects the first electrode terminals 12 of two adjacent battery cells 1, the plurality of first bus bars 4 are also arranged along the first direction X, and correspondingly, a plurality of sampling portions 212 extend from the same side of the first circuit board main body 211 and are arranged at intervals along the first direction X.

First circuit board 21 sets up a plurality of sampling portions 212 with first piece 4 one-to-one that converges to further ensure the sampling sufficiency, simultaneously, be favorable to reducing the structure size of first circuit board main part 211, and be convenient for first circuit board 21 and the first operation of being connected that converges 4, and then be favorable to improving the stability of performance of sampling subassembly.

According to some embodiments of the present application, the first circuit board 21 is fixed to the first insulating member 5.

It is understood that the first circuit board 21 may be adhered to the first insulating member 5 by gluing, or the first circuit board 21 may be fixed to the first insulating member 5 by riveting, screwing, or the like. Illustratively, the first circuit board 21 is riveted to the first insulating member 5 by a plurality of rivets.

First circuit board 21 is fixed in first insulator 5, and first insulator 5 plays good spacing, supporting role to first circuit board 21, improves first circuit board 21's positional stability to be favorable to the overall structure's of guarantee sampling subassembly connection stability, and then effectively improve sampling performance stability.

According to some embodiments of the present application, referring to fig. 4 and further referring to fig. 8, fig. 8 is a partial explosion diagram of a battery cell pack provided in some embodiments of the present application, each battery cell 1 further includes a housing, the housing includes a first wall 11, the first electrode terminal 12 is disposed on the first wall 11, and the first direction X is parallel to a thickness direction of the first wall 11.

The case provides a receiving space for the electrode assembly, the electrolyte and other components of the battery cell 1, and may have various structures. In some embodiments, the case may include a case body having a hollow structure with one side open, and a cover body covering the open side of the case body and forming a sealing connection to form a sealing space for accommodating the electrode assembly, the electrolyte and other related components of the battery cell 1.

The first wall 11 of the housing may be any wall of the housing, and in the embodiment where "the housing includes a casing and a cover", the first wall 11 may be the cover or any wall of the casing. It can be understood that the first electrode terminal 12 is insulated from the case.

The plurality of battery cells 1 are stacked in the first direction X, and the thickness direction of the first wall 11 extends in the first direction X, so that the first wall 11 is located on one side of the battery cells 1 in the first direction X. The first electrode terminal 12 is disposed at the first wall 11, i.e., the first electrode terminal 12 is located at one side of the battery cell 1 in the first direction X.

The first electrode terminal 12 is disposed on the first wall 11 and located at one side of the battery cells 1 along the stacking direction of the battery cells 1, such a structure can reduce the occupancy rate of the first electrode terminal 12 to the end space of the battery cell 1, thereby being beneficial to reducing the size of the battery cell 1 along the first direction X and improving the energy density of the battery 100.

According to some embodiments of the present application, with continued reference to fig. 8, the first bus bar 4 includes a second bottom wall 41 and two third side walls 42, the second bottom wall 41 is connected with the first circuit board 21; the two third side walls 42 are disposed opposite to each other along the first direction X, the second bottom wall 41 connects the two third side walls 42, and the two third side walls 42 are respectively connected to the first electrode terminal 12 of one battery cell 1.

In some embodiments, an end of the third sidewall 42 facing away from the second bottom wall 41 may have a burring part, which is connected to the first electrode terminal 12.

Based on the embodiment that "the first bus bar 4 includes the exposed area 43, the first circuit board 21 includes the first circuit board main body 211 and the sampling portion 212", the exposed area 43 is formed on the side of the second bottom wall 41 away from the battery cell 1, and the exposed area 43 is connected with the sampling portion 212.

Two third lateral walls 42 of first piece 4 that converges are convenient for be connected with the first electrode terminal 12 that sets up in one side of the edge of first direction X of battery monomer 1 to effectively improve the stability of being connected of first piece 4 and first electrode terminal 12 that converges, and then be favorable to guaranteeing the stability that sampling subassembly and battery monomer 1 are connected electrically, improve sampling performance stability.

According to some embodiments of the present application, the first wall 11 is the largest area wall of all the walls of the housing.

Specifically, the first electrode terminal 12 is provided on the large surface of the battery cell 1, and the large surface of the battery cell 1 is perpendicular to the stacking direction (first direction X) of the battery cells 1.

For example, as shown in fig. 8, the battery cell 1 may have a flat blade-shaped structure, the thickness of the battery cell 1 extends along the first direction X, and the thickness of the battery cell 1 is smaller than the length of the battery cell 1 and smaller than the width of the battery cell 1.

Since the thickness of the battery cell 1 is reduced, when the first electrode terminal 12 is provided at the end of the battery cell 1, the size of the first electrode terminal 12 is limited, and if the size of the first electrode terminal 12 is excessively small, the connection stability of the first connecting portion and the first bus bar 4 cannot be satisfied.

Compared with the conventional structure that the first electrode terminal 12 is disposed on the narrow side of the single battery cell 1, the embodiment can effectively improve the dimensional structural stability of the first electrode terminal 12, and is beneficial to further improving the connection stability of the first electrode terminal 12 and the sampling assembly, because the first electrode terminal 12 is disposed on the large side of the single battery cell 1 and is located on one side of the single battery cell 1 along the stacking arrangement direction of the single battery cell.

According to some embodiments of the present application, please refer to fig. 4 again, the battery module 10 further includes a second sampling assembly 6, the second sampling assembly 6 is disposed on the other side of the battery cell group along the second direction Y, the second sampling assembly 6 includes a second circuit board 61 and a second connector 62 connected to the second circuit board 61, the second circuit board 61 is configured to collect signals of the battery cell group, and the second connector 62 is configured to output the signals collected by the second circuit board 61.

It is understood that each battery cell 1 may include a positive electrode terminal and a negative electrode terminal, and when the positive electrode terminal and the negative electrode terminal are not located on the same side of the battery cell 1, one sampling assembly may not be convenient for collecting signals of all the battery cells 1 of the battery cell group.

The battery module 10 is provided with the second sampling assembly 6, so that the sampling sufficiency of the battery single battery pack can be further improved.

Illustratively, as shown in fig. 8, each battery cell 1 includes a first electrode terminal 12 and a second electrode terminal 13 (when the first electrode terminal 12 is a positive electrode, the second electrode terminal 13 is a negative electrode, and when the first electrode terminal 12 is a negative electrode, the first electrode terminal 12 is a positive electrode). The first electrode terminal 12 and the second electrode terminal 13 may be provided at both ends of the battery cell 1 in the second direction Y, respectively.

In the embodiment of "the first electrode terminal 12 is disposed on the first wall 11, and the thickness direction of the first wall 11 is parallel to the first direction X", the second electrode terminal 13 is also disposed on the first wall 11, and the first electrode terminal 12 and the second electrode terminal 13 are disposed on two opposite sides of the first wall 11 along the second direction Y. The first electrode terminal 12 and the second electrode terminal 13 are each insulated from the first wall 11 so that the first electrode terminal 12 and the second electrode terminal 13 are each insulated from the outer case of the battery cell 1.

The first circuit board 21 of the first sampling assembly is used for being connected with the first electrode terminal 12 of the battery cell 1, and the second circuit board 61 of the second sampling assembly 6 is used for being connected with the second electrode terminal 13 of the battery cell 1. As described above, the polarities of the first electrode terminals 12 of all the battery cells 1 may be the same or opposite to each other.

It can be understood that the battery module 10 may further include a second bus bar and a second insulating member 9, the second bus bar connects the second electrode terminals 13 of the two battery cells 1, the second insulating member 9 is disposed between the second bus bar and the second circuit board 61, the structure and connection relationship of the second bus bar may be the same as the first bus bar 4, and the structure and connection relationship of the second insulating member 9 may be the same as the first insulating member 5, which will not be described herein again.

The two sides of the battery module 10 along the second direction Y are respectively provided with a sampling assembly so as to collect signals of the battery module 10 which is respectively arranged at the two sides of the battery monomer 1 by the anode and the cathode of the battery monomer 1, and the sampling assembly is simple in structure and flexible and easy to adjust.

According to some embodiments of the present application, the second connector 62 is mounted to the first end plate 3.

Similar to the first connector 22, there are various embodiments for mounting the second connector 62 to the first end plate 3, for example, the second connector 62 may be fixed to the first end plate 3 by a fastener such as a screw, a strap, etc., the second connector 62 may be adhered to the first end plate 3 by glue, etc.

Likewise, the second connectors 62 may be installed at different positions of the second end plate 8, for example, the second connectors 62 may be installed at one side of the first end plate 3 along the first direction X, at one side of the first end plate 3 along the second direction Y, and at one side of the first end plate 3 along the third direction Z, and exemplarily, the first connectors 22 and the second connectors 62 are both installed at the second surface of the main body of the first end plate 3 and are arranged at intervals along the second direction Y.

It is understood that the first end plate 3 may be provided with a second bracket 33 having the same structure as the first bracket 32, and the second connector 62 may be mounted to the second bracket 33.

The first connector 22 of the first sampling assembly 2 and the second connector 62 of the second sampling assembly 6 are both mounted on the first end plate 3, so that the mounting stability and the connection operation convenience of the first connector 22 and the second connector 62 are ensured at the same time, and the sampling stability of the battery module 10 is further improved. And, the integrated nature of the sampling structure of whole battery module 10 is strong, effectively avoids first sampling subassembly and second sampling subassembly 6 to occupy too much battery module 10's exterior space.

According to some embodiments of the present application, as shown in fig. 4, the battery module 10 further includes a control board 7, the control board 7 is mounted to the first end plate 3, and the first connector 22 and the second connector 62 are electrically connected to the control board 7.

The control board 7 is used for calculating the acquisition information of the first sampling assembly 2 and the second sampling assembly 6 and finally outputting the sampling result of the battery module 10. In practical application, this control panel 7 can be the CSC control panel of the conventional setting of battery 100, and when first sampling subassembly 2 and second sampling subassembly 6 gathered the voltage signal of battery monomer 1, the voltage signal of every battery monomer 1 both sides was gathered and is transmitted to control panel 7 through first sampling subassembly 2 and second sampling subassembly 6 respectively, control panel 7 calculate the voltage signal difference of battery monomer 1 both sides and obtain the voltage information of this battery monomer 1 can.

It will be appreciated that the control panel 7 may be mounted at any location on the first end panel 3. Illustratively, as shown in fig. 4, the first end plate 3 includes an end plate body 31, and the first connector 22, the control board 7, and the second connector 62 are all mounted on a side of the end plate body 31 facing away from the battery cell group.

Set up control panel 7 and be used for finally exporting the information about collection of sampling subassembly, control panel 7, first connector 22 and second connector 62 all set up in first terminal plate 3, are favorable to reducing first connector 22, second connector 62 and connect in the connection route of controller 200, further improve the convenience of in groups of sampling subassembly. Meanwhile, the installation position is concentrated, installation and maintenance are convenient, and the influence on the energy density of the battery 100 caused by the fact that each component occupies a plurality of positions of the battery 100 is avoided.

According to some embodiments of the present application, the battery module 10 further includes a second end plate 8, and the second end plate 8 is disposed at the other side of the battery cell group in the first direction X.

Similar to the first end plate 3, the second end plate 8 is also used for limiting and fastening the battery cell group, so as to play a role in limiting the fastening of the plurality of battery cells 1 of the battery cell group 10, and limit the movement of the battery cell group 10 in the box body.

The material of the second end plate 8 can be nylon, glass fiber and other plastic materials, and can also be aluminum, aluminum alloy and other conventional metal materials, and the second end plate 8 can be an injection molding piece, and can also be a die casting piece and the like.

Battery module 10 is including setting up in the first end plate 3 and the second end plate 8 of the relative both sides of edge first direction X of battery cell group, first end plate 3 and second end plate 8 set up along the range upon range of direction of battery cell group relatively, in order to play more reliable limiting displacement to battery cell group, thereby effectively improve the spacing stability to battery cell group, be favorable to guaranteeing each battery cell 1's of battery cell group position fixity, and then be favorable to guaranteeing battery cell 1 and sampling assembly's stability of being connected, improve sampling performance stability.

Some embodiments of the present application further provide a battery 100, and the battery 100 includes the battery module 10 according to any one of the above aspects. The battery 100 may be any of the batteries 100 described above.

Some embodiments of the present application further provide an electric device, which includes the battery module 10 according to any of the above aspects, wherein the battery module 10 is used for providing electric energy; alternatively, the battery 100 comprises the battery 100 of the above scheme, and the battery 100 is used for providing electric energy. The powered device may be any one of the aforementioned powered devices or systems.

Referring to fig. 3 to 8, in some embodiments, a battery module 10 is provided, where the battery module 10 includes a battery cell set, a first sampling assembly, a first bus bar 4, a first insulating member 5, and a first end plate 3, the battery cell set includes a plurality of battery cells 1 stacked along a first direction X, and each battery cell 1 includes a first electrode terminal 12. The first collecting bar 4 is disposed on one side of the battery cell group along the second direction Y and connected to the first electrode terminals 12 of two adjacent battery cells 1, the first sampling assembly is also disposed on one side of the battery cells 1 along the second direction Y, and the first direction X is perpendicular to the second direction Y.

The first sampling assembly comprises a first circuit board 21 and a first connector 22 connected with the first circuit board 21, the first insulating part 5 is arranged between the first circuit board 21 and the first bus bar 4, the first circuit board 21 is fixed on the first insulating part 5, the first insulating part 5 is provided with an opening 51, so that the first bus bar 4 comprises an exposed area 43 exposed from the opening 51, the exposed area 43 is connected with the first circuit board 21, the first circuit board 21 is used for collecting signals of the battery cell group, and the first connector 22 is connected to one end of the first circuit board 21 along the first direction X and used for outputting the signals collected by the first circuit board 21.

First end plate 3 sets up in one side of the edge first direction X of battery monomer group, and first end plate 3 includes end plate body 31 and first support 32, and first support 32 sets up in one side that end plate body 31 deviates from the battery monomer group, and first support 32 is provided with card hole 3221, and first connector 22 is provided with pothook 221, and first connector 22 passes through pothook 221 joint in first support 32.

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

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

Claims

1. A battery module, comprising:

a battery cell group including a plurality of battery cells stacked in a first direction;

the first sampling assembly comprises a first circuit board and a first connector connected with the first circuit board, the first circuit board is used for collecting signals of the battery monomer group, and the first connector is used for outputting the signals collected by the first circuit board;

a first end plate disposed at one side of the battery cell group in the first direction;

wherein the first connector is mounted to the first end plate.

2. The battery module according to claim 1, wherein the first end plate comprises:

an end plate body;

the first support, set up in the end plate body deviates from one side of battery monomer group, first connector install in first support.

3. The battery module according to claim 2, wherein one of the first connector and the first bracket is provided with a clamping portion, the other of the first connector and the first bracket is provided with a fitting portion, and the clamping portion is in clamping fit with the fitting portion.

4. The battery module as claimed in claim 3, wherein the engaging portion is a hook disposed on an outer surface of the first connector, and the engaging portion is a hole disposed on the first bracket.

5. The battery module according to claim 4, wherein the first bracket comprises:

the first side wall is arranged opposite to the end plate body along the first direction, and the clamping hole is formed in the first side wall;

a first bottom wall connecting the end plate body and the first side wall;

the first bottom wall, the first side wall and the end plate body are encircled to form an accommodating cavity, and the first connector is inserted into the accommodating cavity.

6. The battery module according to claim 5, wherein the first bracket further comprises:

the second side wall is arranged adjacent to the first side wall along a second direction, the second direction is perpendicular to the first direction, and the first bottom wall is connected with the end plate body and the second side wall;

wherein the second side wall is closer to the end plate body than the first side wall, and a passage for the first circuit board to pass through is formed between the second side wall and the end plate body.

7. The battery module according to claim 2, wherein the end plate body comprises:

a substrate;

the output electrode fixing seat protrudes out of one side of the substrate, which is far away from the battery monomer group, and is used for fixing the output electrode of the battery monomer group;

the output electrode fixing seat is provided with a first surface deviating from the substrate, and the first support is connected to the first surface.

8. The battery module according to claim 1, wherein the first circuit board is disposed at one side of the battery cell pack in a second direction, and the first direction is perpendicular to the second direction.

9. The battery module according to claim 8, wherein each of the battery cells includes a first electrode terminal, the battery module further comprising:

at least one first bus bar is arranged on one side of the battery cell group along the second direction, the first bus bar is connected with the first electrode terminals of the two battery cells, and the first bus bar is connected with the first circuit board.

10. The battery module according to claim 9, further comprising:

the first insulating piece is arranged between the first circuit board and the first bus piece, an opening is formed in the first insulating piece, the first bus piece comprises an exposed area exposed out of the opening, and the exposed area is connected with the first circuit board.

11. The battery module according to claim 10, wherein the battery module comprises a plurality of the first bus bars, the first insulating member is provided with a plurality of the openings, and the openings correspond one-to-one to the first bus bars.

12. The battery module according to claim 11, wherein the first circuit board comprises a first circuit board main body and a plurality of first sampling portions extending from the first circuit board main body, the first connectors are connected to the first circuit board main body, and the first sampling portions are connected to the exposed areas in a one-to-one correspondence manner.

13. The battery module according to claim 12, wherein the first circuit board is fixed to the first insulating member.

14. The battery module according to claim 9, wherein each of the battery cells further comprises a housing including a first wall, the first electrode terminal being disposed at the first wall, and the first direction being parallel to a thickness direction of the first wall.

15. The battery module according to claim 14, wherein the first bus bar member comprises:

the second bottom wall is connected with the first circuit board;

the two third side walls are oppositely arranged along the first direction, the second bottom wall is connected with the two third side walls, and the two third side walls are respectively connected with the first electrode terminal of one battery cell.

16. The battery module according to claim 14, wherein the first wall is a wall having a largest area among all the walls of the housing.

17. The battery module according to any one of claims 8 to 16, wherein the first battery module further comprises:

the second sampling subassembly, set up in the edge of battery monomer group the opposite side of second direction, the second sampling subassembly include the second circuit board and with the second connector that the second circuit board is connected, the second circuit board is used for gathering the signal of battery monomer group, the second connector is used for exporting the signal that the second circuit board gathered.

18. The battery module according to claim 17, wherein the second connector is mounted to the first end plate.

19. The battery module according to claim 17, further comprising:

the control panel, install in first end plate, first connector with the second connector all with the control panel electricity is connected.

20. The battery module according to any one of claims 1 to 16, further comprising a second end plate provided to the other side of the battery cell stack in the first direction.

21. A battery comprising the battery module according to any one of claims 1 to 20.

22. An electric device, comprising the battery module according to any one of claims 1 to 20 for supplying electric power; or, comprising a battery according to claim 21 for providing electrical energy.