CN216773350U - Battery module, battery package and electric device - Google Patents

Abstract

The utility model discloses a battery module, a battery pack and an electric device, wherein the battery module comprises a module frame and battery monomer array groups, and each battery monomer array group is stacked; the battery monomer array group comprises a plurality of battery monomers which are arranged in an array; the heating assembly is arranged between two adjacent single battery array groups and comprises a base material and a heating element, wherein the base material is provided with an object placing space for accommodating single batteries, and the single batteries in the single battery array groups are placed in the object placing space; the heating element is arranged on the surface of the base material and used for heating the battery cells in the battery cell array group. Through set up the substrate between adjacent two sets of battery monomer array groups for battery monomer in the battery monomer array group is inseparabler with the heating element contact, improves heating element to the free heating efficiency of battery. Simultaneously, the setting of substrate still can be fixed battery monomer, prevents that battery unit from taking place the displacement to prevent that battery monomer from being heated unevenly.

Description

Battery module, battery package and electric device

Technical Field

The utility model relates to a battery technology field especially relates to a battery module, battery package and power consumption device.

Background

A secondary battery is a battery cell that can be continuously used by activating an active material by charging after discharge. Secondary batteries are widely used in electronic devices such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc. The secondary battery can comprise a cadmium-nickel battery cell, a hydrogen-nickel battery cell, a lithium ion battery cell, a secondary alkaline zinc-manganese battery cell and the like.

In order to meet the electrical performance requirements of the secondary battery in a low-temperature environment, the secondary battery needs to be heated; however, the existing heating assembly has low heating efficiency and is directly acted on a secondary battery, so that safety hidden danger is easily caused; meanwhile, the conventional heating assembly easily causes the battery to be dislocated, so that the heating effect is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, it is desirable to provide a battery module that prevents the heating element from sliding and affecting the heating effect.

In a first aspect, the present application provides a battery module, including: a module frame; the battery pack comprises more than two battery monomer array groups, wherein each battery monomer array group is stacked; the battery cell array group comprises a plurality of battery cells arranged in an array; the heating assembly is arranged between two adjacent single battery array groups and comprises a base material and a heating element, wherein the base material is provided with an object placing space for accommodating single batteries, and the single batteries in the single battery array groups are placed in the object placing space; the heating element is arranged on the surface of the base material and used for heating the battery cells in the battery cell array group.

Through set up the substrate between adjacent two sets of battery monomer array group for battery monomer in the battery monomer array group is inseparabler with the heating element contact, improves battery monomer and heating unit's area of contact, further improves heating element to the free heating efficiency of battery. Simultaneously, the setting of substrate still can be fixed battery monomer, prevents that battery unit from taking place the displacement to prevent that battery monomer from being heated unevenly, improve battery module security.

In the technical solution of the embodiment of the present application, the base material is a heat-conducting base material, and one side of the heat-conducting base material is in contact with the surface of a battery cell in one of the battery cell array groups in the two adjacent battery cell array groups; the heating element is arranged on the other side of the heat-conducting base material and is in contact with the surface of the battery cell in the other battery cell array group of the two adjacent battery cell array groups.

The heat conduction substrate is arranged, so that the heating assembly can heat two groups of battery monomer array groups on two sides of the heating assembly at the same time, and the heating efficiency of the battery module is improved.

In the technical solution of the embodiment of the present application, the substrate is a heat-conducting substrate, including; the first heat-conducting base material is in contact with the surfaces of the battery cells in one of the two adjacent battery cell array groups; the second heat-conducting base material is in contact with the surface of a battery cell in the other battery cell array group of the two adjacent battery cell array groups; the heating element is disposed between the first thermally conductive substrate and the second thermally conductive substrate.

The first heat-conducting base material and the second heat-conducting base material are arranged, so that the heating unit can heat the first heat-conducting base material and the second heat-conducting base material on two sides of the heating unit at the same time, and then two adjacent groups of battery monomer array groups are heated, so that the heating efficiency of the battery module is improved; simultaneously because the heat all conducts through the heat conduction substrate for every battery monomer in the battery module is heated evenly, avoids the potential safety hazard because of being heated uneven and bringing.

In the technical solution of the embodiment of the present application, the two adjacent battery cell array groups include: the battery pack comprises a first battery cell array group and a second battery cell array group; the heating element comprises: the first heating element is arranged on one side of the base material and is in contact with the surfaces of the battery cells in the first battery cell array group; the second heating element is arranged on the other side of the base material and is in contact with the surfaces of the battery cells in the second battery cell array group; the substrate is disposed between the first heating element and the second heating element.

Through the arrangement of the first heating element and the second heating element, the heating elements are directly contacted with the battery cell array group, and the heating efficiency of the heating elements is further improved.

In the technical solution of the embodiment of the present application, the heating element is a heating film or a heating sheet.

The heating film or the heating sheet is arranged so that the heating element can be bent or folded according to the shape of the base material or the battery cell; therefore, the contact area between the heating element and the battery cell is increased, and the heating efficiency of the heating element is further improved.

In the technical scheme of this application embodiment, the shape of substrate is the wave plate, it is in to put the object space the concave part region of wave plate side.

Through the battery monomer with the curved space of putting the thing laminating each other to this increase substrate and the free area of contact of battery, thereby improve the free rate of temperature rise of cylindrical battery.

In the technical solution of the embodiment of the present application, the wave plate includes: the first corrugated plate comprises a plurality of first concave parts which are continuously arranged, and the first concave parts are used for placing the battery cells in one battery cell array group in the two adjacent battery cell array groups; the second wavy plate comprises a plurality of second concave parts which are continuously arranged, and the second concave parts are used for placing the battery cells in the battery cell array group of the other two adjacent battery cell array groups; the first wave plate and the second wave plate are symmetrically arranged on two sides of the base material.

Through setting up wave plate at base plate both sides for the base plate can heat the battery monomer array group of both sides simultaneously, improves battery module unit volume in the volume simultaneously.

In the technical scheme of the embodiment of the application, the shape of the heating element is wavy and comprises a plurality of continuously arranged groove regions, the opening of each groove region faces to the battery cell array group, and the shape of each groove region is matched with the surface shape of the battery cell.

Due to the arrangement of the wavy heating element, the contact area between the single battery and the heating element is increased while the single battery is directly heated by the heating element.

In a second aspect, the present application also provides a battery pack, including: a box body; the battery module is arranged in the box body and is the battery module in any embodiment.

In a third aspect, the present application further provides an electric device, which includes the battery pack according to any one of the embodiments, and the battery pack is configured to provide electric energy.

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

Drawings

Fig. 1 is a schematic structural diagram of a module frame according to an embodiment of the present application;

FIG. 2 is a schematic view of the positions of a first thermally conductive substrate and a second thermally conductive substrate according to an embodiment of the present disclosure;

FIG. 3 is a first schematic view of the positions of a first heating element and a second heating element in an embodiment of the present application;

FIG. 4 is a second schematic illustration of the positioning of the first heating element and the second heating element in an embodiment of the present application;

FIG. 5 is a schematic diagram of a battery cell and a heating assembly according to an embodiment of the present disclosure;

FIG. 6 is an enlarged view of FIG. 5 at A according to an embodiment of the present application.

Description of reference numerals:

1. a battery cell array group; 2. a module frame;

11. a battery cell;

31. a substrate; 32. a heating element;

311. a first thermally conductive substrate; 312. a second thermally conductive substrate;

321. a first heating element; 322. a second heating element.

Detailed Description

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

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 figures above, 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 may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing the association object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" 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 "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. 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.

The battery cell 11 disclosed in the embodiment of the present application may be used in an electric device such as a vehicle, a ship, or an aircraft, but is not limited thereto. A power supply system including the battery cell 11, the battery cell array group 1, and the like disclosed in the present application may be used as the power supply system of the electric device.

The embodiment of the application provides an electric device using a battery module as a power supply, and the electric device can be but is not limited to a mobile phone, a flat panel, 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.

A secondary battery is a battery cell that can be continuously used by activating an active material by charging after discharge. Secondary batteries are widely used in electronic devices such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc. The secondary battery can comprise a cadmium-nickel battery cell, a hydrogen-nickel battery cell, a lithium ion battery cell, a secondary alkaline zinc-manganese battery cell and the like.

In order to meet the electrical performance requirement of the secondary battery in a low-temperature environment, a heating assembly is usually additionally arranged between adjacent battery monomer layers, but the existing heating assembly is only a heating film, only has a heating function and does not have a fixing and limiting function. Therefore, when the existing heating assembly heats the battery cells, the battery cells stacked up are easily dislocated due to factors such as shaking of the electric device (such as a vehicle), so that the connection performance of the battery cells and the electric equipment is affected, the electric equipment is further possibly short-circuited, and a fire is caused.

To sum up this application will provide one kind and can realize the heating function, can fix spacing heating element to battery monomer again simultaneously to this prevents that the battery monomer that piles up each other from taking place the dislocation.

The heating efficiency is low, and the heating agent directly acts on the secondary battery, so that the safety hidden danger is easily caused; meanwhile, the conventional heating assembly easily causes the battery to be dislocated, so that the heating effect is influenced.

For convenience of description, the following embodiments are described by taking an electric device as an example of a vehicle according to an embodiment of the present application.

The vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like. The interior of the vehicle is provided with the battery module, and the battery module can be arranged at the bottom or the head or the tail of the vehicle. The battery module may be used for power supply of a vehicle, for example, the battery module may serve as an operating power source of the vehicle. The vehicle may further include a controller and a motor, the controller being configured to control the battery module to supply power to the motor, for example, for starting, navigation, and operation power requirements of the vehicle.

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

The battery module includes a module frame 2 and battery cells 11. In the battery module, the number of the battery cells 11 may be multiple, and the multiple battery cells 11 may be connected in series or in parallel or in series-parallel, where the series-parallel refers to that the multiple battery cells 11 are connected in series or in parallel. The plurality of battery monomers 11 can be directly connected in series or in parallel or in series-parallel, and the whole body (the battery monomer array group 1) formed by the plurality of battery monomers 11 is accommodated in the module frame 2; of course, the battery module may also be in a form that a plurality of battery cells 11 are connected in series or in parallel or in series-parallel to form a battery cell array set 1, and a plurality of battery cell array sets 1 are connected in series or in parallel or in series-parallel to form a whole and accommodated in the module frame 2. The battery module may further include other structures, for example, the battery module may further include a bus member for accomplishing the electrical connection between the plurality of battery cells 11.

Wherein, each battery cell 11 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 11 may be cylindrical, flat, rectangular parallelepiped, or other shape.

The battery cell 11 refers to the smallest unit constituting the battery. The battery cell 11 includes an end cap, a housing, a cell assembly, and other functional components.

The end cap refers to a member that covers an opening of the case to insulate the internal environment of the battery cell 11 from the external environment. Without limitation, the shape of the end cap may be adapted to the shape of the housing to fit the housing. Alternatively, the end cap may be made of a material (e.g., an aluminum alloy) having a certain hardness and strength, so that the end cap is not easily deformed when being extruded and collided, and thus the single battery 11 may have a higher structural strength and the safety performance may be improved. The end cap may be provided with functional components such as electrode terminals. The electrode terminals may be used to electrically connect with the electric core assembly for outputting or inputting electric power of the battery cells 11. In some embodiments, a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 11 reaches a threshold value may be further disposed on the end cap. The end cap may be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this embodiment.

In some embodiments, insulation may also be provided on the inside of the end cap, which may be used to isolate the electrical connections within the housing from the end cap to reduce the risk of shorting. Illustratively, the insulator may be plastic, rubber, or the like.

The housing is an assembly for mating with end caps to form an internal environment for the cell 11, wherein the formed internal environment may be used to house the cell assembly, electrolyte, and other components. The housing and the end cap may be separate components, and an opening may be provided in the housing, and the opening may be covered by the end cap to form the internal environment of the battery cell 11. The end cap and the housing may be integrated, and specifically, the end cap and the housing may form a common connecting surface before other components are inserted into the housing, and when the interior of the housing needs to be sealed, the end cap covers the housing. The housing may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing may be determined according to the specific shape and size of the electric core assembly. The material of the housing may be various, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this application.

The cell assembly is a component in which electrochemical reactions occur in the battery cells 11. One or more electrical core assemblies may be contained within the housing. The cell assembly is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The parts of the positive plate and the negative plate with the active substances form the main body part of the electric core assembly, and the parts of the positive plate and the negative plate without the active substances form the tabs respectively. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or at both ends of the main body portion, respectively. During the charging and discharging process of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs are connected with the electrode terminals to form a current loop.

The secondary battery is a battery cell 11 that can be continuously used by activating an active material by charging after discharge. Secondary batteries are widely used in electronic devices such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc. The secondary battery may include a cadmium nickel battery cell 11, a hydrogen nickel battery cell 11, a lithium ion battery cell 11, a secondary alkaline zinc manganese battery cell 11, and the like.

In order to increase the battery capacity, a plurality of battery cells 11 are generally assembled into a battery module. The secondary battery cannot meet the electrical performance requirements in a low-temperature environment, and may also cause potential safety hazards.

Specifically, the battery cell 11 cannot meet the electrical performance requirement in a low-temperature environment, the working temperature of the battery cell 11 needs to be increased by externally heating the battery cell 11, the current heating mode cannot meet the temperature rise rate requirement of the large cylindrical battery cell 11, and a new method needs to be used for heating the battery cell.

According to some embodiments of the present application, referring to fig. 1 to 4, the present application provides a battery module. The battery module includes: the module frame 2, the heating assembly and the battery cell 11; more than two battery monomer array groups 1, wherein each battery monomer array group 1 is stacked; the battery cell array group 1 includes a plurality of battery cells 11 arranged in an array; the heating assembly is arranged between two adjacent single battery array groups 1 and comprises a base material 31 and a heating element 32, an object placing space for accommodating the single battery 11 is arranged on the base material 31, and the single battery 11 in the single battery array group 1 is placed in the object placing space; the heating element 32 is disposed on the surface of the base material 31, and is used for heating the battery cells 11 in the battery cell array group 1.

The plurality of battery cells 11 are arrayed in rows or columns to form a battery cell array group 1, that is, each group only has one row of battery cells 11 or one column of battery cells 11; adjacent two battery cells 11 in the battery cell array group 1 in any one group may have a gap therebetween or abut against each other.

When a plurality of battery monomers 11 are arrayed in the row direction to form a battery monomer array group 1, two adjacent battery monomer array groups 1 are battery monomer array groups 1 of an upper group and a lower group; when the plurality of battery cells 11 are arrayed in the row direction to form the battery cell array group 1, two adjacent battery cell array groups 1 are the battery cell array groups 1 of the left and right groups.

The heating assembly is arranged between two adjacent battery cell array groups 1 and used for heating one group or two groups of battery cell array groups 1.

The base material 31 is used for separating two adjacent groups of single battery cell array groups 1, specifically, the base material 31 is arranged according to the arrangement mode of the single batteries 11, that is, the base material 31 is parallel to the array direction of the single batteries 11 in each group of single battery cell array groups 1; when the plurality of battery cells 11 are arrayed in the row direction to form the battery cell array group 1, the base material 31 is horizontally placed, and when the plurality of battery cells 11 are arrayed in the column direction to form the battery cell array group 1, the base material 31 is vertically placed.

The base material 31 further has a limiting and storing function, specifically, the base material 31 is provided with an object placing space adapted to the side wall of the battery cell 11, and the object placing space is arranged on the surface of the base material 31 close to one side of the battery cell 11; the storage space is used for accommodating the single batteries 11 and avoiding poor contact of the single batteries 11 caused by shaking of the single batteries 11 in use. The single battery 11 can be adhered to the object placing space through glue, and can also be directly placed on the object placing space.

Furthermore, only one side surface of the base material 31 has a storage space, the single battery 11 in the single battery array group 1 is placed on the storage space, at this time, the other surface of the base material 31 is a plane, and the other single battery array group 1 is tightly attached to the plane.

The heating element 32 is a heating unit capable of increasing the temperature of itself and other objects, and in this application, the heating unit may be disposed on the surface of the base material 31 on the side close to or far from the battery cell array group 1 according to the material characteristics of the base material 31; specifically, the heating unit may indirectly heat the battery cell 11 by heating the base material 31, and the heating unit may also directly heat the battery cell 11. The heating element 32 can be fixed on the substrate 31 by gluing, snapping, and presetting a mounting channel.

Of course, in some embodiments, the heating element 32 may also be disposed inside the substrate 31, and conduct heat to the battery cell 11 through the substrate 31.

The module frame 2 is a rectangular structure formed by a plurality of plates, and a plurality of battery cell array groups 1 are stacked in the module frame 2. Wherein the battery module has a predetermined height, width and length. The battery cell 11 is a rechargeable secondary battery. The periphery of the battery cell array group 1 that the multiunit piled up is located to the module frame 2 cover that a plurality of panels enclose for restrict the position of a plurality of battery cells 11 in battery module length direction and width direction.

Wherein the module frame 2 has a predetermined height, width and length. The stacking direction of the two or more battery cell array groups 1 is the same as the height direction of the module frame 2. The ends of the plurality of sheets may be fixedly connected by welding, gluing, or by fasteners such as bolts, rivets, or the like. The plate can be made of metal such as aluminum and iron or alloy such as aluminum alloy, the module frame 2 can be of an integrated structure, the structural strength is high, and the bearing stress performance is good. Wherein the heating assembly and the battery cell array group 1 are both arranged in the module frame 2, and the substrate 31 is detachably connected with the module frame 2.

Through set up substrate 31 between adjacent two sets of battery monomer array group 1 for battery monomer 11 in the battery monomer array group 1 contacts with heating element 32 more inseparabler, improves battery monomer 11 and heating unit's area of contact, further improves heating element 11's heating efficiency to battery monomer. Simultaneously, the setting of substrate 31 still can be fixed battery monomer 11, prevents that battery unit from taking place the displacement to prevent that battery monomer 11 from being heated unevenly, improve battery module security.

According to some embodiments of the present application, the substrate 31 is a heat-conducting substrate 31, one side of the heat-conducting substrate 31 is in contact with a surface of the battery cell 11 in one of the two adjacent battery cell array groups 1; the heating element 32 is disposed on the other side of the heat-conducting base material 31, and contacts the surface of the battery cell 11 in the other battery cell array group 1 of the two adjacent battery cell array groups 1.

When the substrate 31 is a heat conductive substrate 31, the heating element 32 can be disposed on a side surface of the substrate 31 away from the storage space; specifically, the heating element 32 conducts heat to the other side of the heat conductive substrate 31 through the heat conductive substrate 31, and further conducts the heat to the battery cell 11. Of course, in another embodiment, the heating element 32 may also be disposed on one side surface having the storage space, i.e., the heating element 32 is disposed at the bottom of the storage space; in this case, the heating element 32 directly heats the battery cells 11 placed in the storage space, and at the same time, conducts heat to the side of the base material 31 that does not have the storage space.

When the heating element 32 is arranged on one side surface far away from the object placing space, the heating element 32 is in contact with another battery cell array group 1 and heats the battery cell array group 1 of another group; when the heating element 32 is disposed on one side of the storage space, one side of the substrate away from the storage space will contact another battery cell array set 1, and the other battery cell array set 1 is heated by the substrate.

The side of the base material 31 away from the storage space is in contact with another battery cell array group 1, so that the battery cell array group 1 placed in the storage space is heated while another battery cell array group 1 is also heated. It should be noted that, the heat conducting base material 31 in this embodiment may be made of metal such as aluminum and iron or alloy material such as aluminum alloy, and the heat conducting base material 31 may also be made of extruded aluminum plate. In the present embodiment, the base materials 31 correspond one-to-one to the cell array groups 1.

The arrangement of the heat-conducting base material 31 enables the heating assembly to heat the two sets of battery cell array groups 1 on the two sides of the heating assembly at the same time, so that the heating efficiency of the battery module is improved.

According to some embodiments of the present application, referring to fig. 2, the substrate 31 is a thermally conductive substrate 31, including; a first heat conductive substrate 311 and a second heat conductive substrate 312; the first heat-conducting base material 311 is in contact with the surface of the battery cell 11 in one of the two adjacent battery cell array groups 1; the second heat-conducting base material 312 is in contact with the surface of the battery cell 11 in the other battery cell array group 1 of the two adjacent battery cell array groups 1; the heating element 32 is disposed between the first heat conductive substrate 311 and the second heat conductive substrate 312.

The first heat-conducting base material 311 and the second heat-conducting base material 312 are made of the same structural material, wherein the first heat-conducting base material 311 and the second heat-conducting base material 312 are arranged symmetrically; specifically, the first heat conducting substrate 311 and the second heat conducting substrate 312 are symmetrically disposed on two sides of the heating element 32 with the heating element 32 as a symmetry axis, and the first heat conducting substrate 311 contacts the heating element 32, and the second heat conducting substrate 312 also contacts the heating element 32.

The heating element 32 may be disposed on a side surface of the first heat conducting substrate 311 away from the storage space, and the heating element 32 may be disposed on a side surface of the second heat conducting substrate 312 away from the storage space; specifically, the heating element 32 conducts heat to the surface of the heat conducting substrate 31 away from the heating element 32 through the heat conducting substrate 31, so as to heat the battery cells 11 on the first heat conducting substrate 311 and the second heat conducting substrate 312. It should be noted that, the heat conducting base material 31 in this embodiment may be made of metal such as aluminum and iron or alloy material such as aluminum alloy, and the heat conducting base material 31 may also be made of extruded aluminum plate.

The first heat-conducting base material 311 and the second heat-conducting base material 312 are arranged, so that the heating unit can heat the first heat-conducting base material 311 and the second heat-conducting base material 312 on two sides of the heating unit at the same time, and then the two adjacent groups of battery cell array groups 1 are heated, so that the heating efficiency of the battery module is improved; simultaneously because the heat all conducts through heat conduction substrate 31 for every battery monomer 11 in the battery module is heated evenly, avoids the potential safety hazard because of being heated uneven and bringing.

According to some embodiments of the present application, referring to fig. 3, two adjacent battery cell array groups 1 include: the battery pack comprises a first battery cell array group and a second battery cell array group; the heating element 32 includes: a first heating element 321 and a second heating element 322; the first heating element 321 is disposed on one side of the base material 31 of the cell array group 1, and contacts with the surface of the cell 11 in the first cell array group; the second heating element 322 is disposed on the other side of the base material 31 of the cell array group 1, and contacts with the surface of the cell 11 in the second cell array group; the base material 31 is disposed between the first heating element 321 and the second heating element 322 of the battery cell array group 1.

The first battery cell array group and the second battery cell array group have the same structure, and the number of the battery cells 11 in the first battery cell array group is the same as that of the battery cells in the second battery cell array group. Both sides of the base material 31 are provided with storage cavities for accommodating the battery cells 11, and the storage spaces positioned on both sides of the base material 31 are respectively used for accommodating the first battery cell array group and the second battery cell array group; that is, the first cell array group and the second cell array group share one base material 31.

In this embodiment, the first heating element 321 and the second heating element 322 are respectively disposed at two sides of the substrate 31 and are respectively used for heating the first cell array set and the second cell array set; in this embodiment, the substrate 31 may be a non-heat conductive material, such as an injection molded bracket. Specifically, when the first cell array group and the second cell array group are disposed on the storage spaces at two sides of the base material 31, the first heating element 321 and the second heating element 322 at two sides of the base material 31 directly act on the first cell array group and the second cell array group.

The heating efficiency of the heating element 32 is further improved by the arrangement of the first and second heating elements 321 and 322 such that the heating element 32 is directly in contact with the battery cell array group 1.

According to some embodiments of the present application, the heating element 32 is a heating film or a heating sheet. The heating element 32 may be a flexible film structure, and the heating element 32 may be bent or folded according to the shape of the substrate 31 or the battery cell 11; specifically, the heating element 32 may be attached to any surface of the base material 31, the base material 31 has an accommodating space adapted to the battery cell 11, and the heating element 32 may be set according to the surface form of the base material 31, so as to increase the contact area between the heating element 32 and the battery cell 11, and further increase the heating efficiency.

It should be further noted that, when the heating element 32 is attached to the surface of the base 31 on the side with the storage space, the heating unit directly heats the single battery 11; when the heating element 32 is attached to the surface of the base material 31 on the side away from the storage space, the heating unit will heat the base material 31, and then the base material 31 heats the battery cell 11.

Of course, the heating element 32 can also be any customized form, in this embodiment, the substrate 31 is a heat conducting substrate 31, the heating element 32 is connected to the heat conducting substrate 31, and the heating element 32 heats the heat conducting substrate 31, so as to heat the battery cell 11.

The arrangement of the heating film or the heating sheet such that the heating element 32 can be bent or folded according to the shape of the base material 31 or the battery cell 11; thereby increasing the contact area between the heating element 32 and the battery cell 11 and further increasing the heating efficiency of the heating element 32.

According to some embodiments of the present application, referring to fig. 2 to 4, the base material 31 is in the shape of a wave plate, and the storage space is a recessed area on one side of the wave plate.

In the present application, the battery cell 11 is preferably cylindrical, so the cross section of the storage space on the base material 31 can be arc-shaped or semicircular, in which case only one side of the base material 31 has a wave plate, and the other side is a plane.

Through the mutual laminating of battery monomer 11 and curved object space to this increase substrate 31 and battery monomer 11's area of contact, thereby improve cylindrical battery monomer 11's rate of rise of temperature.

According to some embodiments of the application, a wave plate comprises: a first waved plate and a second waved plate; the first corrugated plate comprises a plurality of first concave parts which are continuously arranged, and the first concave parts are used for placing the battery cells 11 in one battery cell array group 1 of two adjacent battery cell array groups 1; the second corrugated plate comprises a plurality of second concave parts which are continuously arranged, and the second concave parts are used for placing the battery cells 11 in another battery cell array group 1 in the two adjacent battery cell array groups 1; the first wave plate and the second wave plate are symmetrically disposed on two sides of the base material 31.

Both sides of the base material 31 are provided with storage cavities for accommodating the battery cells 11, and the storage spaces at both sides of the base material 31 are respectively used for accommodating a group of battery cell array groups 1; that is, the two cell array groups 1 share one base material 31. It should be noted that, since the two cell array groups 1 share one base material 31, the cells 11 on the two cell array groups 1 may be symmetrically arranged or staggered.

Specifically, referring to fig. 2, when the battery cells 11 in the two battery cell array groups 1 are symmetrically disposed, the storage spaces on both sides of the base material 31 are also symmetrical to each other.

Referring to fig. 4 to fig. 6, when the battery cells 11 in the two sets of battery cell array groups 1 are arranged in a staggered manner, one battery cell 11 in one set of battery cell array group 1 is stacked in a groove formed by two battery cells 11 in the other set of battery cell array group 1, and at this time, the placing spaces on the two sides of the base material 31 are also arranged in a staggered manner; further, when the battery cell 11 is disposed in the storage space, the contact section between the battery cell 11 and the base material 31 is greater than or equal to 1/8 of the circumference of the battery cell 11.

Through setting up wave plate at base plate both sides for the base plate can heat the battery monomer array group 1 of both sides simultaneously, improves battery module unit volume in 11 volumes of battery simultaneously.

According to some embodiments of the present application, the heating element 32 has a wave shape, and the heating element 32 includes a plurality of continuously arranged groove regions, each groove region opens toward the cell array group 1, and the shape of each groove region is adapted to the surface shape of the battery cell 11.

The wavy heating element 32 is arranged, so that the heating element 32 directly heats the battery cell 11 and simultaneously increases the contact area between the battery cell 11 and the heating element 32.

The embodiment of the application provides a battery package, includes: the box sets up in the box, the battery module is the battery module of above-mentioned arbitrary embodiment.

Be provided with a plurality of battery module in the battery package, be provided with a plurality of battery monomer 11 in the battery module. The battery pack includes a case body, and the shape of the case body is not limited. The box body can be a frame-shaped box body, a disc-shaped box body or a box-shaped box body and the like. Illustratively, the box body comprises a lower shell and an upper shell which is covered with the lower shell. Go up casing and lower casing lid and form the portion of holding after closing, go up casing and lower casing lid and close back accessible fasteners such as bolt locking and fix. Be provided with a plurality of battery modules in the battery package, this battery module sets up in the portion of holding of box. The battery module includes a plurality of battery cells 11, and the plurality of battery cells 11 may be electrically connected in series or in parallel or in series-parallel.

The embodiment of the application provides an electric device, and the electric device comprises the battery pack of any one of the above embodiments, and the battery pack is used for providing electric energy.

The electric device can be, but is not limited to, a vehicle, a ship, an aircraft or the like. The battery package can be used for the vehicle power supply, is provided with a plurality of battery module in the battery package. The vehicle can be a fuel automobile, a gas automobile or a new energy automobile. The new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like. In an embodiment of the present application, a vehicle may include a motor, a controller, and a battery pack. The controller is used for controlling the battery pack to supply power to the motor. The motor is connected with the wheels through a transmission mechanism so as to drive the vehicle to move. The battery pack can be used as a driving power supply of a vehicle, and can replace or partially replace fuel oil or natural gas to provide driving power for the vehicle. In one example, a battery pack may be provided at the bottom or the front or rear of the vehicle. The battery pack may be used to power a vehicle.

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

Claims (10)

1. A battery module, comprising:

a module frame;

the battery pack comprises more than two battery monomer array groups, wherein each battery monomer array group is stacked; the battery cell array group comprises a plurality of battery cells arranged in an array;

the heating assembly is arranged between two adjacent single battery array groups and comprises a base material and a heating element, wherein the base material is provided with an object placing space for accommodating single batteries, and the single batteries in the single battery array groups are placed in the object placing space; the heating element is arranged on the surface of the base material and used for heating the battery monomer in the battery monomer array group.

2. The battery module according to claim 1,

the base material is a heat-conducting base material, and one side of the heat-conducting base material is in contact with the surfaces of the battery monomers in one battery monomer array group of the two adjacent battery monomer array groups;

the heating element is arranged on the other side of the heat-conducting base material and is in contact with the surfaces of the battery monomers in the other battery monomer array group of the two adjacent battery monomer array groups.

3. The battery module according to claim 1,

the substrate is a heat-conducting substrate and comprises;

the first heat-conducting base material is in contact with the surfaces of the battery cells in one of the two adjacent battery cell array groups;

the second heat-conducting base material is in contact with the surfaces of the battery monomers in the battery monomer array group of the other two adjacent battery monomer array groups;

the heating element is disposed between the first thermally conductive substrate and the second thermally conductive substrate.

4. The battery module according to claim 1,

the adjacent two battery cell array groups include: the battery pack comprises a first battery cell array group and a second battery cell array group;

the heating element comprises:

the first heating element is arranged on one side of the base material and is in contact with the surfaces of the battery cells in the first battery cell array group;

the second heating element is arranged on the other side of the base material and is in contact with the surfaces of the battery cells in the second battery cell array group;

the substrate is disposed between the first heating element and the second heating element.

5. The battery module according to any one of claims 1 to 4, wherein the heating element is a heating film or a heating sheet.

6. The battery module according to any one of claims 1 to 4, wherein the base material has a shape of a corrugated plate, and the storage space is a recessed region of a side surface of the corrugated plate.

7. The battery module according to claim 6, wherein the wave plate comprises:

the first corrugated plate comprises a plurality of first concave parts which are continuously arranged, and the first concave parts are used for placing the battery cells in one battery cell array group in the two adjacent battery cell array groups;

the second wavy plate comprises a plurality of second concave parts which are continuously arranged, and the second concave parts are used for placing the battery cells in the battery cell array group of the other two adjacent battery cell array groups;

the first wave plate and the second wave plate are symmetrically arranged on two sides of the base material.

8. The battery module according to any one of claims 1 to 4, wherein the heating element has a wave shape and comprises a plurality of groove regions arranged in series, each groove region opens toward the cell array group, and the shape of each groove region is adapted to the surface shape of the cell.

9. A battery pack, comprising:

a box body;

the battery module is arranged in the box body and is the battery module in any one of claims 1 to 8.

10. An electric device, comprising the battery pack of claim 9, wherein the battery pack is configured to provide electrical energy.

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