CN219959167U - Heat exchange assembly, battery and electric equipment - Google Patents

Abstract

The application provides a heat exchange assembly, a battery and electric equipment. The heat exchange component not only can exchange heat with the battery, but also can absorb the expansion and deformation stress of the battery core through the deformable and heat-conductive buffer layer, and has a buffer effect on the expansion of the battery core, so that the battery core is protected, and meanwhile, the expansion of the battery core can be prevented from being extruded to damage the heat exchange element.

Description

Heat exchange assembly, battery and electric equipment

Technical Field

The application belongs to the technical field of batteries, and particularly relates to a heat exchange assembly, a battery and electric equipment.

Background

With the continuous development and gradual perfection of battery technology, the requirements on the energy density, cycle life and safety of the battery are also continuously improved. In the battery, a cooling plate is generally arranged at the periphery of the battery cell to perform heat exchange on the battery cell, so that the battery cell can work in a proper temperature range. But the battery can attenuate gradually in the use, and the surface of every electric core can all take place the expansion deformation of different degree, and this kind of expansion deformation not only can lead to the decline of electric core self performance, can also lead to electric core and cooling plate laminating bad moreover to influence the heat exchange efficiency between electric core and the cooling plate, and further lead to the temperature control to the battery poor, output is limited, and the security is not enough.

Disclosure of Invention

The embodiment of the utility model aims to provide a heat exchange assembly, a battery and electric equipment, and aims to solve the problems that in the prior art, poor lamination between a cooling plate and a battery core is caused by expansion deformation of the battery core, and heat exchange efficiency is affected.

In a first aspect, an embodiment of the present utility model provides a heat exchange assembly, where the heat exchange assembly includes a heat exchange element and a heat-conductive deformable buffer layer, and at least one side surface of the heat exchange element is fixedly attached to the buffer layer.

In the technical scheme of the embodiment of the utility model, after the heat exchange component and the battery are assembled together, one side surface of the buffer layer is in contact with the battery. Therefore, the battery can be subjected to heat exchange through the heat exchange element, and the stress of the expansion deformation of the battery core can be absorbed through the deformable and heat-conducting buffer layer, so that the expansion of the battery core is buffered, the battery core is protected, and meanwhile, the heat exchange element can be prevented from being damaged by the extrusion of the expanded battery core; and after the cell expands and deforms, the buffer layer can adaptively deform, so that the buffer layer is prevented from cracking or separating from the surface of the heat exchange element, and the buffer layer can be always in good contact with the cell, so that the heat exchange efficiency between the heat exchange assembly and the battery is ensured. Furthermore, the buffer layer can play a role in buffering between the battery and the heat exchange element, so that damage such as scratch is prevented due to friction between the battery and the heat exchange element.

In some embodiments, the buffer layer is a polyimide film;

or the buffer layer is an epoxy resin layer;

or the buffer layer is a composite layer formed by laminating a polyimide film and an epoxy resin layer into a whole.

One of the polyimide film, the epoxy resin layer and the composite layer of the polyimide film and the epoxy resin layer is adopted as the material of the buffer layer, so that the buffer layer has good deformability and good insulativity and thermal conductivity.

In some embodiments, the buffer layer is crimped to the surface of the heat exchange element.

Through pressing the buffer layer on the surface of the heat exchange element, the buffer layer is firmly attached to the heat exchange element, and the buffer layer is not easy to crack.

In some embodiments, the buffer layer is a thermally conductive rubber layer.

By adopting the heat-conducting rubber as the material of the buffer layer, the heat-conducting rubber has good deformability, heat conductivity and insulativity.

In some embodiments, the thermally conductive rubber layer is a silicone rubber mixed with a thermally conductive filler; or the heat conducting rubber layer is ethylene propylene diene monomer rubber mixed with heat conducting filler.

By adopting soft silicone rubber or ethylene propylene diene monomer rubber as the buffer layer, the heat-conducting heat-exchange battery has good deformability, and the heat-conducting filler is mixed in the silicone rubber or ethylene propylene diene monomer rubber, so that the buffer layer has good heat conductivity, and the heat-exchange efficiency between the heat-exchange component and the battery is improved.

In some embodiments, the buffer layer is a thermally conductive silicone tape.

The buffer layer made of the heat-conducting silicon rubber cloth has high heat conductivity, high insulativity and high strength, can absorb the expansion stress of the battery, can conduct heat between the heat exchange element and the battery efficiently through the buffer layer, and has an insulating effect on the battery.

In some embodiments, the buffer layer is bonded to a surface of the heat exchange element.

The buffer layer is adhered to the surface of the heat exchange element, so that the buffer layer and the heat exchange element are firmly adhered, and the buffer layer is not easy to separate or crack.

In some embodiments, the buffer layer is provided with a plurality of spaced apart strip-shaped through holes.

Through set up a plurality of interval distribution's bar through-hole at the buffer layer, can make the buffer layer have bigger deformability, be favorable to the buffer layer to absorb the expansion stress of battery, the buffer layer still can be well with battery contact and do not break away from after the battery expansion deformation moreover, the buffer layer also can not split or break away from the surface of heat exchange element, has improved the heat exchange efficiency between heat exchange component and the battery.

In some embodiments, the strip-shaped through hole has an inner surface with a circular arc transition at both ends along its length.

Through set up the internal surface of circular arc transition at the both ends of bar through-hole along self length direction, can improve the intensity of buffer layer in bar through-hole department, like this, the buffer layer can not be because of seting up bar through-hole and make intensity reduce by a wide margin even split.

In some embodiments, the opposite sides of the heat exchange element are fixedly attached with a buffer layer.

Through the fixed laminating buffer layer in the opposite two sides of heat exchange element, when heat exchange component and battery are assembled, can place the heat exchange component between two batteries, the buffer layer that is located the heat exchange element both sides like this can absorb the expansion stress of two batteries respectively.

In some embodiments, the buffer layer is internally coated with a heat generating sheet.

Through buffer layer cladding piece that generates heat, can make the buffer layer not only have good deformability, can absorb the expansion stress of battery, but also accessible piece that generates heat heats the battery moreover, improves the heating efficiency of heat exchange component to the battery. In addition, the buffer layer can also play a role in insulating and protecting the heating sheet.

In some embodiments, the heating sheet comprises a substrate and a heating wire, wherein the heating wire is distributed on the substrate in a linear and tortuous manner, and the heating wire is provided with two electric terminals, and the two electric terminals are positioned at two opposite ends of the substrate.

The heating wires are distributed on the matrix in a linear and tortuous manner, so that the heating wires are fully paved on the matrix as much as possible, the energy density and the temperature uniformity of the heating sheet are improved, and the temperature difference at different positions during heating is avoided.

In some embodiments, the heat exchange element is a liquid cooled plate.

Through setting up the heat exchange element as the liquid cooling board, the usable liquid that flows in the liquid cooling board heats or cools off the battery, and the packaging technology of liquid cooling board and battery is ripe, and heat exchange efficiency is high. And under the condition that the liquid cooling plate fails and cannot be heated, the battery can be heated through the heating sheet covered in the buffer layer, and the heat exchange assembly has the functions of heating and cooling.

In some embodiments, the heat exchange element is a heat sink.

The heat radiating fins are adopted as the heat exchange elements, so that the heat radiation and cooling of the battery can be realized, and the heating fins coated in the buffer layer can be used for heating the battery, so that the heat exchange assembly has the functions of heating and cooling.

In some embodiments, the heat exchange element is a deformable sheet metal or plate material.

By adopting the deformable metal plate or sheet as the heat exchange element, the heat exchange element can correspondingly deform along with the expansion of the battery, so that the heat exchange element and the buffer layer can synchronously deform, thereby better absorbing the expansion stress of the battery, and the buffer layer can be always well attached to the battery, thereby ensuring the heat exchange efficiency between the heat exchange component and the battery; meanwhile, the damage caused by the extrusion of the heat exchange element by the battery can be avoided, and the buffer layer is not easy to split or separate from the heat exchange element; in addition, the heat exchange elements with different shapes can be correspondingly processed according to different shapes and arrangement modes of the batteries, so that the heat conduction area between the heat exchange assembly and the batteries is maximized.

In some embodiments, the heat exchange element comprises a plurality of connectors connected end to end, each connector being curved to form a semi-cylindrical or rectangular recess, the directions of curvature of each adjacent two connectors being opposite.

By adopting the heat exchange element formed by a plurality of connectors which are connected end to end in sequence, each connector is bent to one side to form a semi-cylindrical or cuboid groove, and the bending directions of every two adjacent connectors are opposite, so that the heat exchange element is sequentially distributed in a meandering manner around the outer walls of a plurality of batteries which are arranged in a row, square or round batteries are respectively and correspondingly arranged in the semi-cylindrical or cuboid grooves formed by the connectors, the heat exchange assembly is uniformly distributed among the batteries as much as possible, and is fully contacted with the side surfaces of the batteries, so that the temperature of each area of the whole battery is balanced and stable.

In a second aspect, an embodiment of the present application provides a battery, where the battery includes at least one heat exchange component of any one of the embodiments and a plurality of battery cells, the heat exchange component is disposed between the plurality of battery cells, and a buffer layer of the heat exchange component contacts the battery cells.

The battery also has the beneficial effects of any of the embodiments described above, as the battery includes the heat exchange assembly of any of the embodiments described above.

In some embodiments, the surface of the heat exchange element, which is attached to the buffer layer, is planar, the cells are prismatic cells, and the heat exchange assembly is disposed between two adjacent cells.

Through setting up the surface of heat exchange element with the buffer layer laminating into the plane, such heat exchange component can be convenient for be in the same place with square battery assembly, and heat exchange element places between two adjacent square batteries, and heat exchange component can be laminated with square battery and level and smooth, is favorable to carrying out heat exchange with high efficiency. And the heat exchange assembly can respectively exchange heat of the two square batteries positioned on two sides of the heat exchange assembly, so that the heat exchange efficiency of the batteries is improved.

In some embodiments, the heat exchange element comprises a plurality of connectors connected end to end in sequence, each connector is bent to form a semi-cylindrical groove, the bending directions of every two adjacent connectors are opposite, and the battery cells are cylindrical batteries and are placed in the grooves.

Through adopting the heat exchange element that comprises a plurality of connectors that connect gradually from beginning to end, every connector crooked formation semicircle body recess, the crooked opposite direction of every adjacent two connectors, like this, the heat exchange component can form the wave and the distribution of winding between a plurality of cylinder batteries of arranging into one row, the cylinder battery can be arranged in semicircle body recess and with the buffer layer laminating contact of heat exchange component for the heat exchange component distributes as far as possible evenly between each cylinder battery, and fully contacts with the side of each cylinder battery, makes the temperature in each region of whole battery more balanced stable.

In some embodiments, the heat exchange element comprises a plurality of connectors connected end to end in sequence, each connector is bent to form a rectangular groove, the bending directions of every two adjacent connectors are opposite, and the battery cells are square batteries and are arranged in the grooves.

Through adopting the heat exchange element that constitutes owing to a plurality of connectors that connect gradually from beginning to end, every connector crooked formation cuboid recess, the crooked opposite direction of every adjacent two connectors, like this, the heat exchange component can be zigzag distribute between a plurality of square batteries of arranging into one row, square battery can be arranged in the cuboid recess and with the buffer layer laminating contact of heat exchange component for the heat exchange component distributes as far as possible evenly between each square battery, and fully contacts with each square battery's side, makes the temperature in each region of whole battery more balanced stable.

In a third aspect, an embodiment of the present application provides an electric device, where the electric device includes the battery according to any one of the embodiments.

The electric equipment comprises the battery of any embodiment, so that the electric equipment also has the beneficial effects of any embodiment.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a heat exchange assembly according to an embodiment of the present application;

FIG. 2 is a front view of the heat exchange assembly shown in FIG. 1;

FIG. 3 is a cross-sectional view taken at the A-A position of FIG. 2;

FIG. 4 is a partial schematic view of FIG. 3;

FIG. 5 is a schematic view showing a combination of a buffer layer and a heat generating sheet in the heat exchange assembly shown in FIG. 1;

FIG. 6 is a wiring diagram of the heater strip of the heat generating fin shown in FIG. 5;

FIG. 7 is another trace of the heater strip of the heat-generating fin of FIG. 5;

FIG. 8 is a further trace of the heater strip of the heat patch of FIG. 5;

FIG. 9 is a schematic view of the heat exchange assembly and prismatic battery of FIG. 1 assembled together;

FIG. 10 is a front view of the assembled unitary structure of the heat exchange assembly and prismatic battery of FIG. 9;

FIG. 11 is a schematic view showing the overall structure of a heat exchange assembly and a cylindrical battery according to another embodiment of the present application;

fig. 12 is an exploded view of the heat exchange assembly and cylindrical battery shown in fig. 11;

fig. 13 is a schematic structural diagram of an electric device according to an embodiment of the present application.

Wherein, each reference sign in the figure:

1-a heat exchange assembly; 11-a heat exchange element; 1101-pass; 1102-grooves; a 111-linker; 112-water chamber; 12-a buffer layer; 1201-bar-shaped through holes; 121-an inner surface; 122-a buffer unit; 13-heating sheets; 131-matrix; 132-heating wire; 1321-an electrical terminal; 2-battery cells; 100-cell; 200-a controller; 300-motor; 1000-electric equipment.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

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

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate 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 merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

With the continuous development and gradual perfection of battery technology, the requirements on the energy density, cycle life and safety of the battery are also continuously improved. Heat exchange elements such as cooling plates, heat sinks, etc. are typically provided around the cell to exchange heat with the cell, ensuring that the cell operates within a suitable temperature range. But the battery can attenuate gradually in the use, and the surface of each electric core can all take place the expansion deformation of different degree, and this kind of expansion deformation can not only lead to electric core self performance's decline, can also lead to electric core and heat exchange element laminating such as cooling plate or fin to influence the heat exchange efficiency between electric core and the heat exchange element, and further lead to the temperature control to the battery poor, output is limited, the security is not enough.

In view of the above, a heat-conductive and deformable buffer layer may be fixedly attached to the surface of the heat exchange element, so that after the heat exchange element and the battery are assembled together, the heat exchange element is disposed on the peripheral side of the battery, and the buffer layer attached to the surface of the heat exchange element contacts with the surface of the battery. More importantly, the buffer layer can deform, so that if the battery expands and deforms, the buffer layer can absorb the expansion stress of the battery, thereby protecting the battery; the buffer layer can be deformed adaptively, so that the heat exchange element is not deformed by extrusion of the expanded battery and can be separated from or cracked by the buffer layer, and the buffer layer can be always in good contact with the surface of the battery, thereby improving the heat exchange efficiency between the heat exchange component and the battery; furthermore, the buffer layer can play a role in buffering between the battery and the heat exchange element, so that damage such as scratch is prevented due to friction between the battery and the heat exchange element.

The heat exchange assembly provided by the embodiment of the application can be used as a thermal management system of various secondary batteries, and ensures that the batteries work in a proper temperature range. The embodiment of the application also provides a secondary battery comprising the heat exchange component, such as a lithium ion battery, a lithium sulfur battery, a sodium ion battery or a magnesium ion battery, wherein the battery can be used as a power battery and also can be used for an energy storage power station, but is not limited to the power battery. In addition, the embodiment of the application also provides electric equipment comprising the battery.

As shown in fig. 1 to 4, an embodiment of the present application provides a heat exchange assembly 1, where the heat exchange assembly 1 includes a heat exchange element 11 and a heat-conductive deformable buffer layer 12, and at least one side surface of the heat exchange element 11 is fixedly attached with the buffer layer 12.

The heat exchange element 11 is an element for exchanging heat with a battery that needs to be warmed or cooled, so that the battery is warmed or cooled, and for example, the heat exchange element 11 may be a liquid cooling plate or a heat sink. The heat exchange element 11 may have only one of the functions of raising and lowering the temperature of the battery, or may have both the functions of raising and lowering the temperature of the battery. The heat exchange element 11 may take various shapes that can facilitate the contact with the battery and heat exchange, for example, the heat exchange element 11 may be plate-shaped, sheet-shaped or other shapes, and the specific shape of the heat exchange element 11 is not limited in the embodiment of the present application.

The buffer layer 12 is fixedly attached to the surface of the heat exchange element 11. For example, the buffer layer 12 may be thermally pressed on the surface of the heat exchange element 11 by a thermally curable glue. For another example, the buffer layer 12 may be adhered to the surface of the heat exchange element 11 by an adhesive.

In the state of use, the buffer layer 12 is located between the heat exchange element 11 and the battery, the buffer layer 12 being in contact with the surface of the battery. Since the buffer layer 12 is thermally conductive, the heat exchange element 11 can exchange heat with the battery through the buffer layer 12, thereby heating or cooling the battery. The battery can be gradually attenuated and expansion deformation of different degrees can occur in the use process, but because the buffer layer 12 is deformable, the buffer layer 12 can also absorb the expansion stress of the battery, on one hand, the excessive expansion of the battery is limited, so that the battery is protected, and on the other hand, the expansion of the battery can be prevented from being extruded to damage the heat exchange element 11, so that the heat exchange element 11 is protected.

The fact that the buffer layer 12 is fixedly attached to at least one side surface of the heat exchange element 11 means that the buffer layer 12 may be provided only on one side surface of the heat exchange element 11, or that the buffer layer 12 may be provided on a plurality of surfaces of the heat exchange element 11. In practical applications, the fixing and attaching of the buffer layer 12 on one or more surfaces of the heat exchange element 11 may be determined according to practical needs, such as the shape of the heat exchange element 11, the arrangement of the battery and the heat exchange element 11, and the power density.

In the technical scheme of the embodiment of the application, after the heat exchange component 1 and the battery are assembled together, one side surface of the buffer layer 12 of the heat exchange component 1 is contacted with the surface of the battery, so that the temperature of the battery can be raised or lowered through the heat exchange element 11, the expansion stress of the battery can be absorbed through the buffer layer 12, the expansion of the battery can be buffered, the battery can be protected, and meanwhile, the heat exchange element 11 can be prevented from being damaged by the expansion of the battery. And after the expansion deformation of the battery, the buffer layer 12 can be deformed adaptively, so that the buffer layer 12 is prevented from cracking or separating from the surface of the heat exchange element 11, the buffer layer 12 can be always in good contact with the battery, and the heat exchange efficiency between the heat exchange component 1 and the battery is ensured. Further, the buffer layer 12 can also play a role in buffering between the battery and the heat exchange element 11, preventing damage such as scratches caused by friction between the battery and the heat exchange element 11.

In some embodiments, the buffer layer 12 is a polyimide film.

The polyimide film has good insulation, and the polyimide film is adopted as the buffer layer 12, so that the buffer layer 12 not only has good deformability, but also has good insulation, so that the buffer layer 12 not only can absorb the expansion stress of the battery, and can also have good insulation effect on the battery, and heat conduction is performed between the heat exchange element 11 and the battery through the buffer layer 12.

In some embodiments, the buffer layer 12 is an epoxy layer.

The epoxy resin is a high heat conduction material, and the buffer layer 12 is made of the epoxy resin, so that the battery has good deformability and good heat conductivity, the buffer layer 12 can not only absorb expansion stress of the battery, but also conduct heat efficiently between the heat exchange element 11 and the battery through the buffer layer 12, and the buffer layer 12 can also play an insulating role on the battery.

In some embodiments, the buffer layer 12 is a composite layer of polyimide film and epoxy layer laminated together.

The polyimide film has good insulativity, the epoxy resin is a high heat conduction material, and a composite layer formed by laminating the polyimide film and the epoxy resin layer is used as the buffer layer 12, so that the buffer layer 12 has good deformability, excellent heat conductivity and insulativity, and the buffer layer 12 can absorb the expansion stress of the battery, can conduct heat between the heat exchange element 11 and the battery efficiently through the buffer layer 12, and has an insulating effect on the battery.

In some embodiments, the buffer layer 12 is crimped to the surface of the heat exchange element 11.

For the buffer layer 12 made of polyimide film or epoxy resin, the buffer layer 12 can be pressed against the surface of the heat exchange element 11, the buffer layer 12 is generally pressed against the surface of the heat exchange element 11 by using thermosetting glue, and a layer of glue layer is formed after the thermosetting glue is cured, so that the buffer layer 12 can be firmly combined with the surface of the heat exchange element 11, and the buffer layer 12 is not easy to crack or separate from the heat exchange element 11.

By fixing the buffer layer 12 to the surface of the heat exchange element 11 in a press-bonding manner, the bonding between the buffer layer 12 and the heat exchange element 11 is made firm, and the buffer layer 12 is not easily cracked or separated from the heat exchange element 11.

In some embodiments, the buffer layer 12 is a thermally conductive rubber layer.

The heat conducting rubber is soft in texture and high in heat conductivity. The buffer layer 12 can be made of soft sheet-shaped heat-conducting rubber, so that the buffer layer 12 has good deformation capability, heat conductivity and insulativity, the buffer layer 12 not only can absorb expansion stress of the battery, but also can conduct heat efficiently between the heat exchange element 11 and the battery through the buffer layer 12, and the buffer layer 12 made of the heat-conducting rubber has the effect of reducing contact thermal resistance, improves heat transmission efficiency between the heat exchange element 11 and the battery and has an insulating effect on the battery. Optionally, the thermal conductivity of the layer of thermally conductive rubber is greater than or equal to 1.2 w/(m x k), which allows efficient heat transfer between the heat exchange element 11 and the battery through the buffer layer 12.

In some embodiments, the thermally conductive rubber layer is a silicone rubber mixed with a thermally conductive filler.

The silicon rubber is soft, can be used as a main body material of the heat conducting rubber layer, and is mixed with the heat conducting filler, so that the heat conducting property can be enhanced, and the heat conducting rubber layer with good heat conductivity is obtained. By adopting such a heat conductive rubber layer as the buffer layer 12, the buffer layer 12 has good deformability, heat conductivity and insulation, and the buffer layer 12 not only can absorb the expansion stress of the battery, but also can conduct heat efficiently between the heat exchange element 11 and the battery through the buffer layer 12 and has an insulation effect on the battery.

The silicone rubber mixed with the heat-conducting filler is a rubber product prepared by processing slurry formed by mixing silicone rubber slurry and the heat-conducting filler. For example, in a specific process, the silicone rubber slurry and the heat conductive filler may be mixed first, then the mixed slurry is stirred, then the stirred slurry is dried and molded to obtain a sheet-shaped rubber product, and finally the dried sheet-shaped rubber product may be cut into a required size according to the need.

By adopting silicone rubber as the buffer layer 12, good deformability and insulation can be provided, and the heat conductive filler is mixed in the silicone rubber, so that the buffer layer 12 has better heat conductivity, thereby improving the heat exchange efficiency between the heat exchange assembly 1 and the battery.

In some embodiments, the thermally conductive rubber layer is ethylene propylene diene monomer rubber mixed with a thermally conductive filler.

The ethylene propylene diene monomer rubber is soft in texture, can be used as a main body material of the heat conducting rubber layer, and is mixed with the heat conducting filler, so that the heat conducting property can be enhanced, and the heat conducting rubber layer with good heat conductivity is obtained. By adopting such a heat conductive rubber layer as the buffer layer 12, the buffer layer 12 has good deformability, heat conductivity and insulation, and the buffer layer 12 not only can absorb the expansion stress of the battery, but also can conduct heat efficiently between the heat exchange element 11 and the battery through the buffer layer 12 and has an insulation effect on the battery.

The ethylene propylene diene monomer rubber mixed with the heat-conducting filler is a rubber product prepared by processing slurry formed by mixing ethylene propylene diene monomer rubber slurry and the heat-conducting filler. For example, in a specific process, ethylene propylene diene monomer rubber slurry and a heat conducting filler can be mixed, then the mixed slurry is stirred, the stirred slurry is dried and molded to obtain a sheet rubber product, and finally the dried sheet rubber product can be cut into a required size according to the requirement.

By adopting the ethylene propylene diene monomer rubber as the buffer layer 12, the ethylene propylene diene monomer rubber has good deformability and insulativity, and the heat conducting filler is mixed in the ethylene propylene diene monomer rubber, so that the buffer layer 12 has better heat conductivity, and the heat exchange efficiency between the heat exchange component 1 and the battery is improved.

In some embodiments, the buffer layer 12 is a thermally conductive silicone tape.

The heat-conducting silica gel cloth is prepared by coating silica gel mixed with ceramic powder on a glass fiber cloth substrate, wherein the ceramic powder mixed in the silica gel has high heat conductivity, so that the prepared heat-conducting silica gel cloth has excellent heat conductivity. In addition, the heat-conducting silicon adhesive tape can also have variability, has excellent insulativity, higher strength, puncture resistance and strong tensile resistance, and is a high-insulation, high-strength and flame-retardant heat-conducting material in the current electrical equipment. The heat conduction silicon rubber cloth is adopted as the buffer layer 12, so that the expansion stress of the battery can be absorbed, heat conduction can be efficiently carried out between the heat exchange element 11 and the battery through the buffer layer 12, and the battery is insulated. Optionally, the thermal conductivity of the thermally conductive silicone tape is greater than or equal to 1.2 w/(m x k), which allows efficient heat transfer between the heat exchange element 11 and the battery through the buffer layer 12.

In some embodiments, the buffer layer 12 is adhered to the surface of the heat exchange element 11.

The buffer layer 12 may be adhered to the surface of the heat exchange element 11 by an adhesive, for example, the buffer layer 12 may be adhered to the surface of the heat exchange element 11 by a double sided adhesive, so that the buffer layer 12 and the heat exchange element 11 are firmly adhered, and the buffer layer 12 is not easy to be deglued or cracked. The polyimide film, the buffer layer 12 of different materials such as epoxy resin, heat conductive rubber, heat conductive silicone tape, etc. in the foregoing embodiment may be bonded to the surface of the heat exchange element 11 by adhesion.

In some embodiments, the buffer layer 12 is provided with a plurality of spaced apart stripe-shaped vias 1201.

As shown in fig. 5, the buffer layer 12 is provided with a stripe-shaped through hole 1201, and the stripe-shaped through hole 1201 penetrates the buffer layer 12 in the thickness direction. The number of the bar-shaped through holes 1201 is plural and is spaced apart from the buffer layer 12, for example, the bar-shaped through holes 1201 may be spaced apart from the buffer layer 12 in parallel. In this way, the buffer layer 12 has a greater deformability at the location of the strip-shaped through holes 1201, so that the buffer layer 12 can allow a greater amplitude of deformation.

Through the arrangement of the plurality of strip-shaped through holes 1201 which are distributed at intervals on the buffer layer 12, the buffer layer 12 can have larger deformation capacity, the buffer layer 12 is favorable for absorbing the expansion stress of the battery, the buffer layer 12 can still be well contacted with the battery without separating after the battery expands and deforms, the buffer layer 12 is not easy to split and separate from the heat exchange element 11, and the heat exchange efficiency between the heat exchange assembly 1 and the battery is improved.

In practical applications, the length extending direction of the through hole 1201 may be set according to the expansion deformation direction of the battery, so as to facilitate the buffer layer 12 to absorb the expansion stress of the battery. For example, as shown in fig. 5, a plurality of bar-shaped through holes 1201 are sequentially arranged at intervals along the length direction of the buffer layer 12, and the length direction of the bar-shaped through holes 1201 is perpendicular to the length direction of the buffer layer 12, so that the buffer layer 12 can maximally absorb the expansion stress of the battery.

It is worth mentioning that the bar-shaped through holes include bar-shaped slits in addition to the through holes having a predetermined length and width as shown in fig. 5. The stripe-shaped through hole 1201 shown in fig. 5 is different from the stripe-shaped slit in that the stripe-shaped through hole 1201 has a predetermined length and width; the stripe-shaped slit is formed by scratching the buffer layer 12 in the thickness direction, that is, the stripe-shaped slit has only a predetermined length but a width close to zero. In other embodiments, a plurality of stripe-shaped slits may be provided in the buffer layer 12 at intervals, and the stripe-shaped slits penetrate the buffer layer 12 in the thickness direction. The plurality of strip-shaped slits may be spaced apart from each other in parallel with the buffer layer 12. The buffer layer 12 may thus also have a greater deformability at the strip-shaped gaps, so that the buffer layer 12 may allow a greater amplitude of deformation.

In some embodiments, the bar-shaped through hole 1201 has an inner surface 121 with rounded transitions at both ends along its length.

For the stripe-shaped through hole 1201 provided on the buffer layer 12, the strength of the stripe-shaped through hole 1201 at both end positions in the longitudinal direction thereof is the lowest, and when the buffer layer 12 is deformed, both end positions of the stripe-shaped through hole 1201 are easily broken. Therefore, chamfering processing may be performed at both end positions of the bar-shaped through hole 1201 such that both end positions of the bar-shaped through hole 1201 have the inner surfaces 121 of the circular arc transition, thereby improving the strength of the buffer layer 12 at both end positions of the bar-shaped through hole 1201.

By providing the inner surfaces 121 with the circular arc transition at the two ends of the strip-shaped through hole 1201 along the length direction thereof, the strength of the buffer layer 12 at the strip-shaped through hole 1201 can be improved, and thus, the strength of the buffer layer 12 is not greatly reduced or even cracked due to the provision of the strip-shaped through hole 1201.

In some embodiments, the buffer layer 12 is fixedly attached to opposite sides of the heat exchange element 11.

The buffer layers 12 are fixedly attached to the opposite sides of the heat exchange element 11, so that after the heat exchange assembly 1 and the battery are assembled, the heat exchange assembly 1 can be placed between the two battery monomers, the heat exchange assembly 1 can heat or cool the two battery monomers at the same time, and the buffer layers 12 located on the opposite sides of the heat exchange element 11 can respectively and correspondingly absorb expansion stress of the two battery monomers.

By fixing the buffer layers 12 on the opposite sides of the heat exchange element 11, the heat exchange assembly 1 can be placed between two battery cells when the heat exchange assembly 1 and the battery are assembled, and thus the buffer layers 12 on the two sides of the heat exchange element 11 can absorb expansion stress of the two battery cells respectively.

In some embodiments, the buffer layer 12 is internally coated with a heat generating sheet 13.

As shown in fig. 5, a heat generating sheet 13 is provided inside the buffer layer 12, and the buffer layer 12 is covered with the heat generating sheet 13. Specifically, in the production process, the buffer layer 12 may be formed by laminating two sheets, placing the heat-generating sheet 13 between the two sheets, and then joining and fixing the peripheral edges of the two sheets together, so that the heat-generating sheet 13 is wrapped in the buffer layer 12, and the power-receiving terminal of the heat-generating sheet 13 for electrically connecting an external power supply extends to the outside of the buffer layer 12, i.e. the power-receiving terminal is exposed from the buffer layer 12, while other areas of the heat-generating sheet 13 are hidden in the buffer layer 12. The heat generating sheet 13 can generate heat after being connected with electricity, so that the battery is heated by the heat generating sheet 13. In this way, under the condition that the heat exchange element 11 has the heating function, the battery can be heated and warmed through the heat exchange element 11 and the heating sheet 13 at the same time, so that the heating efficiency of the heat exchange assembly 1 on the battery is improved; and when the heat exchange element 11 fails and cannot heat the battery, the heating sheet 13 can be used for heating the battery. And under the condition that the heat exchange element 11 only has a cooling function, the heating piece 13 can be used for heating and raising the temperature of the battery, so that the heat exchange assembly 1 has the functions of heating and raising the temperature and lowering the temperature, the temperature of the battery can be regulated and controlled, and the battery can be ensured to work in a proper temperature range.

By coating the heating sheet 13 in the buffer layer 12, the buffer layer 12 not only has good deformability and can absorb the expansion stress of the battery, but also can heat the battery through the heating sheet 13, so that the heating efficiency of the battery is improved. In addition, the buffer layer 12 can also play a role in insulation and protection of the heat generating sheet 13.

In some embodiments, the heat generating sheet 13 includes a substrate 131 and a heating wire 132, the heating wire 132 is distributed on the substrate 131 in a linear and tortuous manner, the heating wire 132 has two electrical terminals 1321, and the two electrical terminals 1321 are located at opposite ends of the substrate 131.

As shown in fig. 6, the heat generating sheet 13 includes a base 131 and heating wires 132, the base 131 serves as a supporting structure of the heating wires 132, and the heating wires 132 are distributed in the base 131. The heating wire 132 has two electrical terminals 1321, the two electrical terminals 1321 are located at two opposite ends of the base 131, and the two electrical terminals 1321 extend to the outside of the buffer layer 12. That is, the two electrical terminals 1321 are exposed from the buffer layer 12, and other areas of the heating wire 132 and the substrate 131 are hidden in the buffer layer 12. The two power connection terminals 1321 are respectively used as positive and negative electrodes for being electrically connected with an external power supply, so that the heating wire 132 can generate heat after being electrified and is used for heating the battery. The heating wires 132 are distributed in the matrix 131 in a linear and tortuous manner, for example, one of the routing manners of the heating wires 132 is shown in fig. 6, so that the heating wires 132 are distributed as much as possible over the whole area of the matrix 131, thereby improving the energy density and the temperature uniformity of the heating sheet 13 and avoiding the temperature difference at different positions during heating.

By distributing the heating wires 132 in the matrix 131 in a linear and meandering manner, the matrix 131 can be fully paved with the heating wires 132 as much as possible, so that the energy density and the temperature uniformity of the heating sheet 13 are improved, and the temperature difference at different positions during heating is avoided.

In other embodiments, two electrical terminals 1321 may also be located at the same end of the substrate 131. As shown in fig. 7, in another routing manner of the heating wire 132, two electrical terminals 1321 of the heating wire 132 are respectively located at the same end of the substrate 131, and both the electrical terminals 1321 extend to the outside of the buffer layer 12. The heating wires 132 are distributed in the matrix 131 in a linear and tortuous manner, so that the heating wires 132 can be distributed over the whole area of the matrix 131 as much as possible, thereby improving the energy density and the temperature uniformity of the heating sheet 13 and avoiding the temperature difference at different positions during heating.

As shown in fig. 8, in another routing manner of the heating wire 132, two electrical terminals 1321 of the heating wire 132 are respectively located at two opposite ends of the substrate 131, and both the two electrical terminals 1321 extend to the outside of the buffer layer 12. The heating wires 132 are also distributed in the matrix 131 in a linear and tortuous manner, so that the heating wires 132 can be distributed over the whole area of the matrix 131 as much as possible, thereby improving the energy density and the temperature uniformity of the heating sheet 13 and avoiding the temperature difference at different positions during heating. In other embodiments, the heating wires 132 of the heating sheet 13 may also adopt other routing manners, and the routing manner of the heating wires 132 is not limited in the present application.

In some embodiments, the heat exchange element 11 is a liquid cooled plate.

As shown in fig. 3 and 4, the heat exchange element 11 is a liquid cooling plate, for example, an aluminum plate may be used as the liquid cooling plate, and the aluminum plate has good heat conductivity. The liquid cooling plate is provided with a passage 1101 through which a fluid flows, and a liquid may be introduced into the passage 1101 in the liquid cooling plate, for example, cooling water or cooling oil may be introduced into the liquid cooling plate, and heat exchange is performed between the liquid cooling plate and the battery through the buffer layer 12. The battery can be correspondingly heated or cooled according to whether the high-temperature liquid or the low-temperature liquid is introduced into the liquid cooling plate.

The liquid cooling plate is adopted as the heat exchange element 11, the liquid flowing in the liquid cooling plate is utilized to heat or cool the battery, the assembly process of the liquid cooling plate and the battery is mature, the liquid cooling is adopted as the conventional cooling mode of the battery, and the heat exchange efficiency is high. When the heat generating sheet 13 is further coated in the buffer layer 12, if the liquid cooling plate fails and the battery cannot be heated, the battery may be heated by the heat generating sheet 13 coated in the buffer layer 12. Such a heat exchange assembly 1 has both heating and cooling functions.

In some embodiments, the heat exchange element 11 is a heat sink.

The heat exchange element 11 may be an aluminum fin having good heat conductivity and deformability. The buffer layer 12 is fixedly attached to the surface of the radiating fin, and the buffer layer 12 is in contact with the battery, so that the battery can be efficiently radiated and cooled through the radiating fin, and the expansion stress of the battery is absorbed through the buffer layer 12. In the case that the buffer layer 12 is covered with the heat generating sheet 13, the heat generating sheet 13 may be used to heat the battery, so that the heat exchange assembly 1 has both heating and cooling functions.

By using the heat sink as the heat exchange element 11, the battery can be efficiently cooled.

In some embodiments, the heat exchange element 11 is a deformable sheet metal plate or sheet.

A deformable metal plate or sheet is used as the heat exchange element 11 so that the heat exchange element 11 can be deformed accordingly as the battery expands. For example, the heat exchange element 11 may be a liquid cooling plate made of an aluminum plate, or the heat exchange element 11 may be a heat sink made of an aluminum plate, and the aluminum material has good heat conductivity and good deformability, and the buffer layer 12 may be deformed, so that the heat exchange element 11 and the buffer layer 12 may be correspondingly deformed synchronously with expansion of the battery, thereby better absorbing expansion stress of the battery, and the buffer layer 12 may be always in good contact with the battery, thereby ensuring heat exchange efficiency between the heat exchange assembly 1 and the battery. Secondly, the heat exchange element 11 can be correspondingly deformed along with the expansion of the battery, and damage caused by the extrusion of the heat exchange element 11 by the battery can be avoided, and the buffer layer 12 is not easy to split or separate from the heat exchange element 11. Furthermore, the heat exchange element 11 is made of deformable materials, so that the heat exchange element 11 with different shapes can be processed correspondingly according to different shapes and arrangement modes of the batteries, and the heat conduction area between the heat exchange element 11 and the batteries is maximized.

In some embodiments, the surface of the heat exchange element 11 that is in contact with the buffer layer 12 is planar.

The heat exchange element 11 may be a liquid cooling plate made of a flat plate material, or the heat exchange element 11 may be a heat sink made of a sheet material, and the surface of the heat exchange element 11 attached to the buffer layer 12 is a plane. Such a heat exchange assembly 1 is suitable for heat exchange with a prismatic battery, which can be brought into flat abutting contact with the heat exchange assembly 1 for efficient heat exchange.

As shown in fig. 1 to 4, the heat exchange element 11 is a flat-surface liquid cooling plate, a channel 1101 for liquid circulation is arranged in the liquid cooling plate, the liquid cooling plate can be placed between square batteries, the surface of the liquid cooling plate can be well attached to and contacted with the square batteries, and the heat exchange efficiency between the liquid cooling plate and the square batteries is high.

By setting the surface of the heat exchange element 11, which is bonded to the buffer layer 12, to be flat, the flat bonding contact between the heat exchange assembly 1 and the prismatic battery can be facilitated to efficiently perform heat exchange, and the structure of the heat exchange assembly 1 is also relatively simple.

In some embodiments, the heat exchange element 11 includes a plurality of connectors 111 connected end to end, each connector 111 being bent to form a semi-cylindrical recess 1102, the bending directions of each two adjacent connectors 111 being opposite.

As shown in fig. 12, the heat exchange element 11 has a wave shape, and the heat exchange element 11 includes a plurality of connection bodies 111 connected end to end in sequence, all of the connection bodies 111 being integrally connected. Each of the connection bodies 111 is bent to form a semi-cylindrical recess 1102. The bending directions of every two adjacent connectors 111 are opposite, so that the heat exchange element 11 formed by connecting all the connectors 111 has a wave shape.

As shown in fig. 12, the buffer layer 12 also includes a plurality of buffer units 122, and each buffer unit 122 is correspondingly and fixedly attached to a surface of a groove 1102 formed by one of the connectors 111. Each buffer unit 122 is a sheet body separated from each other independently, that is, two adjacent buffer units 122 are not connected together, and all buffer units 122 are dispersed rather than connected as a unitary structure. This reduces the difficulty in positioning and bonding between each buffer unit 122 and the connector 111 during the manufacturing process of the heat exchange assembly 1. Of course, in other embodiments, all the buffer units 122 may be sequentially connected end to form the buffer layer 12 with a monolithic structure, and then the buffer layer 12 with a monolithic structure may be attached to one side surface of the heat exchange element 11.

The wavy heat exchange assembly 1 can be conveniently and evenly contacted with the cylindrical battery to efficiently exchange heat. In the actual assembly process, a plurality of cylindrical batteries are arranged to form a multi-row and multi-column structure, and each cylindrical battery in the same row is respectively placed in each semi-cylindrical groove 1102 formed by the heat exchange element 11 and is contacted with the buffer unit 122 attached to the inner wall of the groove 1102. Because the bending directions of the two adjacent connecting bodies 111 are opposite, the heat exchange assemblies 1 are distributed around the outer walls of the cylindrical batteries in the same row in a zigzag manner, each row of cylindrical batteries corresponds to one heat exchange assembly 1, and the whole heat exchange assembly 1 can be uniformly distributed among the cylindrical batteries as much as possible and fully contacted with the side walls of a plurality of different cylindrical batteries, so that the temperature of each region of the whole battery is relatively balanced and stable.

In some embodiments, the heat exchange element 11 comprises a plurality of connectors connected end to end, each connector being bent to form a rectangular recess, the bending directions of each two adjacent connectors being opposite.

Similar to the embodiment shown in fig. 12, the heat exchange element 11 comprises a plurality of connectors connected end to end in sequence, all of which are integrally connected. Each connector is bent to form a cuboid-shaped groove. The bending directions of every two adjacent connectors are opposite, so that the heat exchange element 11 formed by connecting all the connectors is in the shape of square wave.

The buffer layer 12 fixedly attached to the surface of the heat exchange element 11 also includes a plurality of buffer units, each of which is correspondingly attached to the inner surface of the rectangular parallelepiped-shaped groove formed by one of the connectors. Each cushioning unit is a sheet that is separate from each other, i.e., two adjacent cushioning units are not connected together, and all cushioning units 122 are discrete rather than connected as a unitary structure. Of course, in other embodiments, all the buffer units may be sequentially connected end to form the buffer layer 12 with a monolithic structure, and then the buffer layer 12 with a monolithic structure is attached to one side surface of the heat exchange element 11.

The heat exchange assembly 1 thus takes the shape of a square wave, which can be easily assembled with a square battery. In the actual assembly process, a plurality of square batteries are arranged to form a multi-row and multi-column structure, each square battery in the same row is respectively arranged in each cuboid-shaped groove formed by the heat exchange element 11 and is contacted with the buffer unit attached to the inner wall of the groove, because the bending directions of the two adjacent connectors are opposite, the heat exchange elements 11 are sequentially distributed in a meandering manner around the outer walls of each square battery in the same row, each row of square batteries corresponds to one heat exchange assembly 1, the whole heat exchange assembly 1 can be uniformly distributed among each square battery as much as possible and is fully contacted with the side wall of each square battery, and therefore the temperature of each area of the whole battery is balanced and stable.

In addition, after the square wave-shaped heat exchange component 1 is assembled with square batteries arranged in a plurality of rows and columns, the connector bent into the rectangular groove can be attached to the square batteries in the groove and perform heat exchange, and the connector can be well attached to an adjacent row of corresponding square batteries and perform heat exchange, so that the contact area between the heat exchange component 1 and the whole battery is increased, and the heat exchange efficiency is improved.

In a second aspect, an embodiment of the present application provides a battery 100, where the battery 100 includes at least one heat exchange assembly 1 according to any one of the embodiments above and a plurality of battery cells 2. The heat exchange assembly 1 is disposed between the plurality of battery cells 2, and the buffer layer 12 of the heat exchange assembly 1 contacts the surface of the battery cells 2 and exchanges heat.

In the actual assembly process, the arrangement between the heat exchange assembly 1 and each of the battery cells 2 may be correspondingly different according to the different shapes of the heat exchange assembly 1 and the different shapes of the battery cells 2. For example, when the heat exchange module 1 is a liquid cooling plate with a surface to which the buffer layer 12 is attached, the battery cell 2 and the heat exchange module 1 may be assembled in a cyclic arrangement of "heat exchange module-battery cell-heat exchange module". If the size of the liquid cooling plates is larger, a group of battery cells 2 can be placed between the two parallel liquid cooling plates side by side, so that the liquid cooling plates can exchange heat to a plurality of battery cells 2 at the same time.

In the case that the battery 100 includes a plurality of heat exchange modules 1, the heat exchange modules 1 have the heat generating fins 13 coated in the buffer layer 12, a heat generating fin structure in which two electrical terminals 1321 of the heating wire 132 are located at opposite ends of the base 131 may be used, so that the heat generating fins 13 of the plurality of heat exchange modules 1 may be conveniently electrically connected.

In the technical scheme provided by the embodiment of the application, the heat exchange assembly 1 is arranged among the plurality of battery monomers 2, and the buffer layer 12 of the heat exchange assembly 1 can be in contact with the battery monomers 2, so that heat exchange can be performed between the heat exchange element 11 and each battery monomer, and the stress of expansion deformation of the battery monomer can be absorbed through the deformable and heat-conductive buffer layer 12, so that the expansion of the battery monomer is buffered, and the battery is protected.

In some embodiments, the surface of the heat exchange element 11 that is attached to the buffer layer 12 is a plane, the battery cells 2 are square batteries, and the heat exchange assembly 1 is disposed between two adjacent battery cells 2.

As shown in fig. 9 and 10, the heat exchange element 11 is a liquid cooling plate, which is a metal plate and has a passage 1101 for liquid to flow through. The both ends of liquid cooling board are equipped with hydroecium 112 respectively, and two hydroecium 112 all communicate with the inside passageway 1101 of liquid cooling board, and one of them hydroecium 112 is equipped with the inlet, and another hydroecium 112 is equipped with the liquid outlet, and the liquid that is used for carrying out the heat exchange with the battery like this gets into one of them hydroecium 112 from the inlet, and the liquid further circulate in passageway 1101 and carry out the heat exchange with each battery monomer 2, and finally the liquid flows out through the liquid outlet of another hydroecium 112. The liquid cooling plate made of a metal plate has a flat surface, and the surface of the liquid cooling plate, which is attached to the buffer layer 12, is a plane, that is, the surface of the heat exchange assembly 1, which is in contact with the battery cell 2, is a plane.

The battery 100 includes a plurality of heat exchange assemblies 1 and a plurality of battery cells 2. The battery cells 2 are square batteries, and all the battery cells 2 can be arranged to form a multi-row and multi-column structure. The heat exchange assemblies 1 are liquid cooling plates with the surfaces being fixedly attached with buffer layers 12, and each heat exchange assembly 1 is arranged between two adjacent battery monomers 2. That is, the battery cells 2 and the heat exchange member 1 are assembled in such a cyclic arrangement that "heat exchange member-battery cell-heat exchange member". Such heat exchange component 1 can be convenient for be in the same place with square battery assembly, and heat exchange component 1 is arranged in between two adjacent battery monomers 2, and heat exchange component 1 can laminate with square battery and level, is favorable to carrying out heat exchange effectively. In addition, the buffer layers 12 can be fixedly attached to the two opposite surfaces of the heat exchange element 11, so that the heat exchange assembly 1 can respectively exchange heat with the two battery monomers 2 positioned on the two sides of the heat exchange assembly, and the heat exchange efficiency of the battery is improved.

In some embodiments, the heat exchange element 11 includes a plurality of connectors 111 connected end to end, each of which is bent to form a semi-cylindrical recess 1102, and each two adjacent connectors 111 are bent in opposite directions, and the battery cells 2 are cylindrical batteries and are disposed in the recesses 1102.

As shown in fig. 11 and 12, the battery 100 includes a plurality of heat exchange assemblies 1 and a plurality of battery cells 2. The battery cells 2 are cylindrical batteries, and all the battery cells 2 can be arranged to form a multi-row and multi-column structure. The heat exchange assembly 1 is a wave-shaped liquid cooling plate. Specifically, the heat exchange assembly 1 includes a heat exchange element 11 and a buffer layer 12 fixedly attached to one side surface of the heat exchange element 11. The heat exchange element 11 includes a plurality of connection bodies 111 connected end to end in sequence, each connection body 111 being bent to form a semi-cylindrical recess 1102, all connection bodies 111 being integrally connected end to end in sequence. The bending directions of every two adjacent connectors 111 are opposite, so that the heat exchange element 11 formed by connecting all the connectors 111 has a wave shape. Each cylindrical battery can be just placed in each groove 1102 in a one-to-one correspondence and is in contact with the buffer layer 12 fixedly attached to the inner wall of the groove 1102, thereby realizing heat exchange between the cylindrical battery and the heat exchange assembly 1.

By adopting the heat exchange element 11 formed by the plurality of connecting bodies 111 which are connected end to end in sequence, each connecting body 111 is bent to form the semi-cylindrical groove 1102, the heat exchange component 1 can form waves and be distributed between the plurality of cylindrical batteries arranged in a row in a meandering manner, and the cylindrical batteries can be placed in the semi-cylindrical groove 1102 and are in fit contact with the buffer layer 12 of the heat exchange component 1, so that the heat exchange component 1 is uniformly distributed among the cylindrical batteries as much as possible and is fully contacted with the side surfaces of the cylindrical batteries, and the temperature of each area of the whole battery is balanced and stable.

In some embodiments, the heat exchange element 11 includes a plurality of connectors connected end to end in sequence, each connector is bent to form a rectangular groove, and each two adjacent connectors are bent in opposite directions, and the battery cells 2 are square batteries and are placed in the grooves.

The battery 100 includes a plurality of heat exchange assemblies 1 and a plurality of battery cells 2. The battery cells 2 are square batteries, and all the battery cells 2 can be arranged to form a multi-row and multi-column structure. The heat exchange assembly 1 is a liquid cooling plate having a square wave shape. Specifically, the heat exchange assembly 1 includes a heat exchange element 11 and buffer layers 12 fixedly attached to opposite side surfaces of the heat exchange element 11, respectively. The heat exchange element 11 comprises a plurality of connectors connected end to end in sequence, each connector is bent to form a cuboid-shaped groove, and all connectors are connected end to end in sequence in an integrated manner. The bending directions of every two adjacent connectors are opposite, so that the heat exchange element 11 formed by connecting all the connectors takes the shape of square wave. Each square battery can be arranged in each rectangular groove in a one-to-one correspondence manner and is contacted with the buffer layer 12 fixedly attached to the inner wall of the groove, so that heat exchange between the square battery and the heat exchange component 1 is realized.

Through adopting the heat exchange element 11 that comprises a plurality of connectors that connect gradually from beginning to end, every connector is buckled and is formed a cuboid recess, and heat exchange module 1 can be tortuous to distribute between a plurality of square batteries of arranging into one row, square battery can be arranged in the recess that is the cuboid and with recess inner wall buffer layer 12 laminating contact for heat exchange module 1 distributes as far as possible between each square battery, and fully with the side contact of each square battery, make the temperature in each region of whole battery more balanced stable.

In a third aspect, an embodiment of the present application provides an electric device 1000, where the electric device 1000 includes the battery 100 provided in any one of the embodiments above. The electric device 1000 may be various electric devices using a battery as a power source or various energy storage systems using a battery as an energy storage element, and may be, but not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, an energy storage power station, and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

Fig. 13 is a schematic structural diagram of an electric device 1000 according to some embodiments of the present application. The electric equipment 1000 can be a fuel oil automobile, a fuel 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. The battery 100 is disposed in the electric device 1000, and the battery 100 may be disposed at the bottom or the head or the tail of the electric device 1000. Battery 100 may be used to power powered device 1000, for example, battery 100 may be used as an operating power source for a vehicle. Powered device 1000 may also include a controller 200 and a motor 300, controller 200 being configured to control battery 100 to power motor 300, for example, for operating power requirements during vehicle start-up, navigation, and travel.

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

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims (21)

1. The heat exchange assembly is characterized by comprising a heat exchange element and a heat-conducting and deformable buffer layer, wherein the buffer layer is fixedly attached to at least one side surface of the heat exchange element.

2. The heat exchange assembly of claim 1 wherein the buffer layer is a polyimide film;

or the buffer layer is an epoxy resin layer;

or the buffer layer is a composite layer formed by laminating a polyimide film and an epoxy resin layer into a whole.

3. The heat exchange assembly of claim 2 wherein said buffer layer is crimped to a surface of said heat exchange element.

4. The heat exchange assembly of claim 1 wherein said cushioning layer is a thermally conductive rubber layer.

5. The heat exchange assembly of claim 1 wherein said cushioning layer is a thermally conductive silicone tape.

6. The heat exchange assembly of any one of claims 1, 2, 4, or 5 wherein the buffer layer is bonded to a surface of the heat exchange element.

7. A heat exchange assembly according to any one of claims 1 to 5, wherein the buffer layer is provided with a plurality of spaced apart strip-shaped through holes.

8. The heat exchange assembly of claim 7 wherein the strip-shaped through holes have rounded transition inner surfaces at both ends along their length.

9. The heat exchange assembly of any one of claims 1-5 wherein the buffer layer is fixedly attached to opposite sides of the heat exchange element.

10. The heat exchange assembly of any one of claims 1-5 wherein the buffer layer is internally coated with heat generating fins.

11. The heat exchange assembly of claim 10 wherein said heat generating fin comprises a base and a heater wire, said heater wire being disposed in a linear serpentine pattern on said base, said heater wire having two electrical terminals, said two electrical terminals being disposed at opposite ends of said base.

12. The heat exchange assembly of any one of claims 1-5, wherein the heat exchange element is a liquid cooled plate.

13. The heat exchange assembly of any one of claims 1-5, wherein the heat exchange element is a fin.

14. The heat exchange assembly of claim 12 wherein the heat exchange element is a deformable sheet metal or sheet.

15. The heat exchange assembly of claim 13 wherein the heat exchange element is a deformable sheet metal or sheet.

16. A heat exchange assembly according to claim 14 or 15, wherein the heat exchange element comprises a plurality of connectors connected end to end, each of the connectors being curved to form a semi-cylindrical or rectangular recess, the directions of curvature of each adjacent two of the connectors being opposite.

17. A battery comprising at least one heat exchange assembly according to any one of claims 1-16 and a plurality of battery cells, said heat exchange assembly being disposed between a plurality of said battery cells, said buffer layer of said heat exchange assembly being in contact with said battery cells.

18. The battery of claim 17, wherein the surface of the heat exchange element in contact with the buffer layer is planar, the battery cells are prismatic batteries, and the heat exchange assembly is disposed between two adjacent battery cells.

19. The battery of claim 17, wherein said heat exchange element comprises a plurality of connectors connected end to end in sequence, each of said connectors being curved to form a semi-cylindrical recess, each adjacent two of said connectors being curved in opposite directions, said battery cells being cylindrical batteries and being disposed in said recesses.

20. The battery of claim 17, wherein said heat exchange element comprises a plurality of connectors connected end to end in sequence, each of said connectors being curved to form a rectangular recess, each adjacent two of said connectors being curved in opposite directions, said cells being prismatic and disposed in said recesses.

21. A powered device comprising a battery as claimed in any one of claims 17-20.