Battery, heat exchange assembly and electric device

Abstract

The utility model discloses a battery, a heat exchange assembly and an electric device. The battery comprises a box body, a battery monomer, a heat conduction structure and a heat exchange assembly, the battery monomers are arranged in the box body; the heat exchange assembly is provided with a first surface facing the battery monomer, a gap is formed between the first surface and the battery monomer, and the heat conduction structure is filled in the gap for heat exchange between the battery monomer and the heat exchange assembly. And at least one bulge is formed on the heat exchange assembly, is positioned in the gap and protrudes from the first surface to the direction close to the battery monomers. According to the battery provided by the invention, the heat exchange efficiency between the battery monomers and the heat exchange assembly can be improved, and the reliability of the battery is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery, a heat exchange component and an electrical device. Background Art

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0003] In the development of battery technology, in addition to improving the performance of batteries, the reliability of batteries is also an issue that needs to be continuously considered. Therefore, how to improve the reliability of batteries is an issue of continuous improvement in battery technology. Utility Model Content

[0004] In view of the above problems, the present application provides a battery, a heat exchange component and an electrical device, which can improve the reliability of the battery.

[0005] In a first aspect, an embodiment of the present application provides a battery, the battery comprising a housing, a battery cell, a heat-conducting structure and a heat exchange assembly. The battery cell is disposed in the housing. The heat exchange assembly has a first surface facing the battery cell, a gap is formed between the first surface and the battery cell, and the heat-conducting structure fills the gap to allow heat exchange between the battery cell and the heat exchange assembly. At least one protrusion is formed on the heat exchange assembly, the protrusion is located in the gap and protrudes from the first surface toward the direction close to the battery cell.

[0006] In the above technical solution, by arranging multiple protrusions on the first surface of the heat exchange component, the protrusions protrude in the direction close to the battery cell, the heat exchange area of ​​the heat exchange component can be increased, and at the same time the heat transfer distance between the heat exchange component and the battery cell can be shortened, thereby improving the heat exchange efficiency.

[0007] In some embodiments, insulating strips are protrudingly provided on two opposite sides of the first surface along the first direction, so that a gap is formed between the first surface and the battery cell.

[0008] In the above technical solution, insulating strips are protrudingly provided on both sides of the first surface along the first direction, which can be used for assembly positioning of the battery cell and insulation between the battery cell and the heat exchange assembly.

[0009] In some embodiments, a dimension of the insulating bead along the third direction is greater than a dimension of the protrusion.

[0010] In the above technical solution, by setting the size of the insulating strip along the third direction larger than the size of the protrusion, the battery cell can be prevented from directly contacting the heat exchange component and the heat exchange component can be prevented from being electrified. At the same time, the protrusion will be covered by the thermal conductive structure that fills the gap and will not occupy additional assembly space for the battery cell.

[0011] In some embodiments, a plurality of protrusions are formed on the first surface and are distributed at intervals on the first surface.

[0012] In the above technical solution, by arranging a plurality of protrusions at intervals on the first surface, the heat exchange area can be increased and the heat exchange efficiency can be improved.

[0013] In some embodiments, a plurality of protrusions are extended along the second direction of the heat exchange component, and a plurality of protrusions are arranged at intervals along the first direction of the heat exchange component.

[0014] In the above technical solution, by providing a plurality of protrusions extending along the second direction and arranged at intervals along the first direction to form a reinforcing rib structure, the heat exchange area of ​​the heat exchange component can be increased while improving the structural strength of the heat exchange component.

[0015] In some embodiments, the plurality of protrusions are arranged in a ring shape and are distributed at equal intervals.

[0016] In the above technical solution, the heat exchange area and structural strength can be increased by providing an annular protrusion, and the heat exchange component can be designed with a longer heat exchange flow channel to further improve the heat exchange efficiency.

[0017] In some embodiments, the protrusion includes a second surface facing the battery cell, and a distance d between the second surface and the battery cell is d≤1 mm.

[0018] In the above technical solution, by setting the distance d between the raised second surface and the battery cell to ≤ 1 mm, the heat transfer distance between the heat exchange component and the battery cell can be shortened, thereby improving the heat exchange efficiency.

[0019] In some embodiments, the distance d between the second surface and the battery cell satisfies 0.1 mm≤d≤0.5 mm.

[0020] In the above technical solution, by setting the distance between the second surface and the battery cell to 0.1 mm ≤ d ≤ 0.5 mm, the heat conduction distance can be further shortened and the heat exchange efficiency can be improved.

[0021] In some embodiments, the heat-conducting structure is a heat-conducting structural adhesive, the heat-conducting structural adhesive is filled in the gap, and the heat exchange component is bonded to the battery cell through the heat-conducting structural adhesive.

[0022] In the above technical solution, by setting a heat-conducting structural adhesive to bond the heat exchange component and the battery cell, the heat transfer between the two can be effectively achieved while achieving fixation between the two, with a simple structure and high assembly efficiency.

[0023] In some embodiments, the battery cell includes a plurality of walls, and the heat exchange assembly is bonded to any wall by a heat-conductive structural adhesive.

[0024] In the above technical solution, the heat exchange component can be bonded and fixed to any wall of the battery cell by means of a thermally conductive structural adhesive. The heat exchange component can be flexibly installed and can perform heat exchange with the battery cell in multiple directions, thereby improving heat exchange efficiency.

[0025] In some embodiments, the heat exchange component further includes a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are arranged to protrude from the first surface.

[0026] In the above technical solution, by protruding a fluid inlet and a fluid outlet on the first surface of the heat exchange component, the heat exchange medium can flow through the heat exchange component through the fluid inlet and the fluid outlet to achieve heat exchange between the heat exchange component and the battery cell.

[0027] In some embodiments, the protrusion is disposed in an inner region defined by the fluid inlet, the fluid outlet, and the insulating molding.

[0028] In the above technical solution, by limiting the position of the area where the protrusion is located, it can be ensured that the protrusion is covered by the thermal conductive structural adhesive, thereby avoiding direct contact between the battery cell and the heat exchange component and reducing the risk of leakage. At the same time, the gap between the heat exchange component and the battery cell can be fully utilized and enough protrusions can be arranged to improve the heat exchange efficiency.

[0029] In the second aspect, an embodiment of the present application provides a heat exchange assembly, which is used to adjust the temperature of a battery cell. The heat exchange assembly includes an upper heat exchange plate and a lower heat exchange plate fixedly connected to the upper heat exchange plate; the upper heat exchange plate and the lower heat exchange plate together form a flow channel for flowing a heat exchange medium; the upper heat exchange plate has a first surface facing the battery cell, and the first surface is formed with at least one protrusion, which protrudes in a direction close to the battery cell.

[0030] In the above technical solution, the upper heat exchange plate has a first surface facing the battery cell, and a plurality of protrusions are formed on the first surface. The protrusions protrude toward the direction close to the battery cell, which can shorten the heat transfer distance, increase the heat exchange area, and improve the heat exchange efficiency.

[0031] In a third aspect, an embodiment of the present application further provides an electrical device, comprising the battery in the above embodiment or the heat exchange assembly in the above embodiment, wherein the battery is used to provide electrical energy.

[0032] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0034] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0035] Figure 2 An exploded view of the structure of a battery provided in some embodiments of the present application;

[0036] Figure 3 A schematic diagram of a heat exchange assembly provided for some embodiments of the present application;

[0037] Figure 4 A schematic diagram of the cooperation between a heat exchange assembly and a plurality of battery cells provided in some embodiments of the present application;

[0038] Figure 5 Schematic diagram of heat exchange components provided for other embodiments of the present application;

[0039] Figure 6 Schematic diagram of a heat exchange assembly provided for some other embodiments of the present application;

[0040] Figure 7 For this application Figure 3 A partial enlarged view of a protrusion of the heat exchange component shown;

[0041] Figure 8 For this application Figure 3 Schematic diagram of the exploded structure of the heat exchange component shown.

[0042] Description of reference numerals:

[0043] Vehicle 1000, battery 100, controller 200, motor 300, box 10, first box 11, second box 12, battery cell 20, heat exchange assembly 30, protrusion 301, heat conductive structure 302, insulating strip 303, first surface 304, fluid inlet 305, fluid outlet 306, gap 40, second surface 3011, wall 201, upper heat exchange plate 30a, lower heat exchange plate 30b, flow channel 30c, first direction X, second direction Y, third direction Z. DETAILED DESCRIPTION

[0044] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0046] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0047] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0048] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0049] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0050] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", and "horizontal" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0051] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0052] In the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0053] The battery mentioned in the embodiments of the present application refers to a single physical module including multiple battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may be a battery module or a battery pack. A battery module generally includes multiple battery cells. The battery generally includes a box for encapsulating multiple battery cells or multiple battery modules, and the box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells; of course, the battery may not include a box.

[0054] At present, a water cooling plate is installed at the bottom of the battery module and battery pack, which is generally coated with thermal conductive structural adhesive and is used for fixing, insulating and heat transferring the upper battery cells. However, due to its low thermal conductivity, the water cooling plate has limited effect in transferring heat from the battery.

[0055] Based on the above considerations, in order to improve the heat exchange efficiency, a heat exchange component is proposed. The heat exchange component is used for heat exchange with the battery cell. The upper plate of the heat exchange component is pre-stamped to add a protruding structure, and the thermal conductive structural adhesive covers the protruding structure, so that the heat conduction area between the battery cell and the heat exchange component is increased.

[0056] In the above scheme, by setting a protruding structure on the upper plate of the heat exchange assembly, the heat conduction area of ​​the heat exchange plate is increased, and at the same time, the heat conduction distance between the battery cell and the heat exchange assembly is reduced, thereby improving the heat exchange efficiency. Furthermore, the protruding structure is covered by a heat-conducting structural adhesive, and no additional battery assembly space is occupied, thereby improving space utilization.

[0057] The embodiment of the present application provides an electric device using the battery disclosed in the present application as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc., the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, etc.

[0058] For the convenience of explanation, the following embodiments take the electric device as a vehicle as an example to introduce the structure of the electric device and the battery of the present application in detail.

[0059] Please refer to Figure 1 , Figure 1 The power consumption device provided for some embodiments of the present application is a structural schematic diagram of a vehicle 1000. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The vehicle 1000 is provided with a battery 100, and the battery 100 may be arranged at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for the starting, navigation and working power requirements of the vehicle 1000 during driving. In some embodiments of the present application, the battery 100 may not only be used as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0060] Please refer to Figure 2 , Figure 2The battery cells 20 provided in some embodiments of the present application are used in the structural explosion diagram of the battery 100. The battery 100 includes a case 10 and a plurality of battery cells 20, and the battery cells 20 are accommodated in the case 10. Among them, the case 10 is used to provide an assembly space for the battery cells 20, and the case 10 can adopt a variety of structures. In some embodiments, the case 10 may include a first case 11 and a second case 12, and the first case 11 and the second case 12 cover each other, and the first case 11 and the second case 12 jointly define a receiving cavity for accommodating the battery cells 20. The second case 12 may be a hollow structure with one end open, and the first case 11 may be a plate-like structure, and the first case 11 covers the open side of the second case 12, so that the first case 11 and the second case 12 jointly define a receiving cavity; or, the first case 11 and the second case 12 may also be hollow structures with one side open (for example Figure 2 As shown), the open side of the first box body 11 covers the open side of the second box body 12. Of course, the box body 10 formed by the first box body 11 and the second box body 12 can be in various shapes, such as a cylinder or a cuboid.

[0061] In the battery 100, multiple battery cells 20 can be connected in series, in parallel or in a mixed connection. A mixed connection means that multiple battery cells 20 are connected in series and in parallel. Multiple battery cells 20 can be directly connected in series, in parallel or in a mixed connection, and then the whole formed by multiple battery cells 20 is accommodated in the box 10; or, the battery 100 can also be a battery module formed by multiple battery cells 20 connected in series, in parallel or in a mixed connection, and then multiple battery modules are connected in series, in parallel or in a mixed connection to form a whole, and accommodated in the box 10. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar for realizing electrical connection between multiple battery cells 20.

[0062] Please refer to Figure 3 Any two of the first direction X, the second direction Y and the third direction Z intersect, and further, any two of the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0063] With the development of battery technology, people have put forward higher requirements on the heat exchange efficiency of batteries. In order to improve the heat exchange efficiency of battery cells 20, an embodiment of the present application provides a battery 100.

[0064] In some embodiments, please refer to Figure 3 and Figure 4 , Figure 3 A schematic diagram of a heat exchange assembly 30 provided in some embodiments of the present application, Figure 4Schematic diagram of the cooperation between the heat exchange assembly 30 and multiple battery cells 20 provided in some embodiments of the present application. The battery 100 includes a housing 10, a battery cell 20, a heat conductive structure 302 and a heat exchange assembly 30. The battery cell 20 is disposed in the housing 10. The heat exchange assembly 30 has a first surface 304 facing the battery cell 20, and a gap 40 is formed between the first surface 304 and the battery cell 20. The heat conductive structure 302 fills the gap 40 to allow heat exchange between the battery cell 20 and the heat exchange assembly 30. At least one protrusion 301 is formed on the heat exchange assembly 30, and the protrusion 301 is located in the gap 40 and protrudes from the first surface 304 toward the direction close to the battery cell 20.

[0065] The heat-conducting structure 302 can be a heat-conducting structural adhesive. The heat-conducting structural adhesive is a kind of adhesive with heat-conducting properties, which is commonly used in assembly and heat dissipation applications in the fields of electronic equipment, automobiles, aerospace, etc. The heat-conducting structural adhesive has a high thermal conductivity coefficient, can effectively transfer heat, and improve the heat dissipation efficiency of the device. At the same time, the heat-conducting structural adhesive also has a strong bonding force, which can tightly bond two or more components together to form a stable assembly structure. Common heat-conducting structural adhesives include thermally conductive silica gel, thermally conductive silicone grease, etc.

[0066] The heat exchange assembly 30 may be configured to cool the battery cells 20 only, or the heat exchange assembly 30 may be configured to heat the battery cells 20 only, or the heat exchange assembly 30 may be configured to not only cool the battery cells 20 but also heat the battery cells 20 .

[0067] The side of the heat exchange assembly 30 facing the battery cell 20 is a first surface 304 . There is a gap 40 between the first surface 304 and the battery cell 20 . The thermal conductive structural adhesive is filled in the gap 40 to tightly bond the battery cell 20 and the heat exchange assembly 30 into a whole, thereby realizing heat exchange between the battery cell 20 and the heat exchange assembly 30 .

[0068] The first surface 304 of the heat exchange assembly 30 is formed with a plurality of protrusions 301, and the protrusions 301 protrude toward the direction close to the battery cell 20 (eg, Figure 3 The thermal conductive structural adhesive covers all the protrusions 301.

[0069] In the above technical solution, by setting a plurality of protrusions 301 on the first surface 304 of the heat exchange component 30, the protrusions 301 protrude in the direction close to the battery cell 20, so as to increase the heat exchange area of ​​the heat exchange component 30 and shorten the heat transfer distance between the heat exchange component 30 and the battery cell 20, thereby improving the heat exchange efficiency.

[0070] In some embodiments, Figure 3As shown, insulating strips 303 are protrudingly provided on opposite sides of the first surface 304 along the first direction X, so that a gap 40 is formed between the first surface 304 and the battery cell 20 .

[0071] The insulating strip 303 is protrudingly disposed on the first surface 304 of the heat exchange component 30 and extends along the second direction Y. When the battery cell 20 and the heat exchange component 30 are assembled, it can be used to position the battery cell 20. The two ends of the battery cell 20 are located on the insulating strip 303 on both sides of the first direction X. At the same time, the insulating strip 303 is protruding from the first surface 304. Not only can a gap 40 be formed between the heat exchange component 30 and the battery cell 20 for the heat conductive structure 302 to fill, so that the battery cell 20 and the heat exchange component 30 can be tightly bonded together, but it can also avoid direct contact between the battery cell 20 and the heat exchange component 30 to prevent the heat exchange component 30 from being charged.

[0072] In the above technical solution, insulating strips 303 are protruded on both sides of the first surface 304 along the first direction X, which can be used for assembly positioning of the battery cell 20 and insulation between the battery cell 20 and the heat exchange assembly 30 .

[0073] In some embodiments, please refer to Figure 3 and Figure 7 , Figure 7 for Figure 3 The enlarged view of the part of the heat exchange assembly 30 is shown. The dimension of the insulating strip 303 along the third direction Z is greater than the dimension of the protrusion 301 .

[0074] The dimension of the insulating strip 303 along the third direction Z is greater than the dimension of the protrusion 301 , that is, the thickness of the insulating strip 303 along the third direction Z is greater than the height of the protrusion 301 .

[0075] In the above technical solution, by setting the size of the insulating strip 303 along the third direction Z to be larger than the size of the protrusion 301, the battery cell 20 can be prevented from directly contacting the heat exchange component 30, thereby preventing the heat exchange component 30 from being charged. At the same time, the protrusion 301 will also be covered by the heat conductive structure 302 that fills the gap 40, and will not occupy any additional assembly space for the battery cell 20.

[0076] In some embodiments, please refer to Figure 3 A plurality of protrusions 301 are formed on the first surface 304 and are distributed at intervals on the first surface 304 .

[0077] The protrusions 301 may be distributed in an array or at random intervals on the first surface 304 . The shape of the protrusions 301 may be a circular boss, a trapezoidal boss or other shapes.

[0078] In the above technical solution, by arranging a plurality of protrusions 301 at intervals on the first surface 304, the heat exchange area can be increased and the heat exchange efficiency can be improved.

[0079] In some embodiments, see Figure 5 , Figure 5 Schematic diagram of a heat exchange assembly 30 provided in some other embodiments of the present application. A plurality of protrusions 301 are extended along the second direction Y of the heat exchange assembly 30 , and the plurality of protrusions 301 are arranged at intervals along the first direction X of the heat exchange assembly 30 .

[0080] In the above technical solution, by providing a plurality of protrusions 301 extending along the second direction Y and arranged at intervals along the first direction X to form a reinforcing rib structure, the heat exchange area of ​​the heat exchange component 30 can be increased while improving the structural strength of the heat exchange component 30.

[0081] In some embodiments, see Figure 6 , Figure 6 The schematic diagram of the heat exchange assembly 30 provided in some embodiments of the present application is as follows: The plurality of protrusions 301 are arranged in a ring shape and are distributed at equal intervals.

[0082] In the above technical solution, the heat exchange area and the structural strength can be increased by providing the annular protrusion 301, and the heat exchange component 30 can be designed with a longer heat exchange channel to further improve the heat exchange efficiency.

[0083] In some embodiments, see Figure 3-Figure 7 The protrusion 301 includes a second surface 3011 facing the battery cell 20 , and a distance d between the second surface 3011 and the battery cell 20 is d, where d≤1 mm.

[0084] The second surface 3011 of the protrusion 301 is a plane, and may be circular, elliptical, square or other shapes.

[0085] In the above technical solution, by setting the distance d between the second surface 3011 of the protrusion 301 and the battery cell 20 to be ≤1 mm, the heat transfer distance between the heat exchange assembly 30 and the battery cell 20 can be shortened, thereby improving the heat exchange efficiency.

[0086] In some embodiments, the distance d between the second surface 3011 and the battery cell 20 satisfies 0.1 mm≤d≤0.5 mm.

[0087] Exemplarily, the spacing d may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm.

[0088] In the above technical solution, by setting the distance between the second surface 3011 and the battery cell 20 to be 0.1 mm≤d≤0.5 mm, the heat conduction distance can be further shortened and the heat exchange efficiency can be improved.

[0089] In some embodiments, Figure 3 and Figure 7 As shown, the heat-conducting structure 302 is a heat-conducting structural adhesive, the heat-conducting structural adhesive is filled in the gap 40, and the heat exchange component 30 is bonded to the battery cell 20 through the heat-conducting structural adhesive.

[0090] In the above technical solution, the heat exchange component 30 and the battery cell 20 are bonded together by using a heat-conducting structural adhesive, so that the heat transfer between the two can be effectively achieved while the fixation between the two is achieved, the structure is simple, and the assembly efficiency is high.

[0091] In some embodiments, Figure 2 As shown, the battery cell 20 includes a plurality of walls 201 , and the heat exchange assembly 30 is bonded to any wall 201 by means of a heat-conducting structural adhesive.

[0092] In the above technical solution, the heat exchange component 30 can be bonded and fixed to any wall 201 of the battery cell 20 by means of a thermally conductive structural adhesive. The heat exchange component 30 can be flexibly installed and can perform heat exchange with the battery cell 20 in multiple directions, thereby improving heat exchange efficiency.

[0093] In some embodiments, see Figure 3 The heat exchange component 30 further includes a fluid inlet 305 and a fluid outlet 306 , and the fluid inlet 305 and the fluid outlet 306 are arranged to protrude from the first surface 304 .

[0094] The fluid inlet 305 and the fluid outlet 306 are respectively used for heat exchange medium to flow into and out of the heat exchange component 30. The fluid inlet 305 and the fluid outlet 306 can be respectively arranged at both ends of the heat exchange component 30 along the second direction Y, or can be simultaneously arranged at one end of the heat exchange component 30 along the second direction Y.

[0095] In the above technical solution, by protruding a fluid inlet 305 and a fluid outlet 306 on the first surface 304 of the heat exchange component 30, the heat exchange medium can flow through the heat exchange component 30 through the fluid inlet 305 and the fluid outlet 306 to achieve heat exchange between the heat exchange component 30 and the battery cell 20.

[0096] In some embodiments, see Figure 3 The protrusion 301 is disposed in an inner area defined by the fluid inlet 305 , the fluid outlet 306 and the insulating strip 303 .

[0097] In the above technical solution, by limiting the position of the area where the protrusion 301 is located, it can be ensured that the protrusion 301 is covered by the thermal conductive structural adhesive, thereby avoiding direct contact between the battery cell 20 and the heat exchange component 30, reducing the risk of leakage, and at the same time, fully utilizing the gap 40 between the heat exchange component 30 and the battery cell 20, and arranging enough protrusions 301 to improve the heat exchange efficiency.

[0098] In some embodiments, see Figure 8 , Figure 8 For this application Figure 3 The schematic diagram of the exploded structure of the heat exchange assembly 30 is shown. The heat exchange assembly 30 is used to adjust the temperature of the battery cell 20. The heat exchange assembly 30 includes an upper heat exchange plate 30a and a lower heat exchange plate 30b fixedly connected to the upper heat exchange plate 30a; the upper heat exchange plate 30a and the lower heat exchange plate 30b together form a flow channel 30c for the flow of heat exchange medium; the upper heat exchange plate 30a has a first surface 304 facing the battery cell 20, and the first surface 304 is formed with at least one protrusion 301, and the protrusion 301 protrudes toward the direction close to the battery cell 20.

[0099] The heat exchange assembly 30 is composed of an upper heat exchange plate 30a and a lower heat exchange plate 30b which are sealed and connected. The upper heat exchange plate 30a and the lower heat exchange plate 30b can form a flow channel 30c for the heat exchange medium to flow through molding, extrusion, die casting, casting, etc.

[0100] The heat exchange medium has a high specific heat capacity, and when flowing through the flow channel 30 c of the heat exchange component 30 , it can absorb or release heat to achieve heat exchange with the battery cell 20 .

[0101] In the above technical solution, the upper heat exchange plate 30a has a first surface 304 facing the battery cell 20, and the first surface 304 is formed with a plurality of protrusions 301, which protrude toward the direction close to the battery cell 20, which can shorten the heat transfer distance, increase the heat exchange area, and improve the heat exchange efficiency.

[0102] The embodiments of the present application further provide an electrical device, which includes the battery 100 in the above embodiments or the heat exchange assembly 30 in the above embodiments, and the battery 100 is used to provide electrical energy.

[0103] The battery 100 in the present application includes a housing 10, a battery cell 20, a heat-conducting structure 302, and a heat exchange assembly 30. The battery cell 20 is disposed in the housing 10, the heat-conducting structure 302 is a heat-conducting structural adhesive, and the heat exchange assembly 30 is bonded to the battery cell 20 by the heat-conducting structural adhesive. The heat exchange assembly 30 has a first surface 304 facing the battery cell 20, a gap 40 is formed between the first surface 304 and the battery cell 20, and the heat-conducting structural adhesive is filled in the gap 40 to achieve heat exchange between the battery cell 20 and the heat exchange assembly 30. A plurality of protrusions 301 are formed on the heat exchange assembly 30, and the protrusions 301 are located in the gap 40 and protrude from the first surface 304 toward the direction close to the battery cell 20. The heat exchange assembly 30 also includes an insulating strip 303, which is protrudingly disposed on the first surface 304, so that a gap 40 is formed between the heat exchange assembly 30 and the battery cell 20. The insulating strip 303 can be used to realize the assembly positioning of the battery cell 20 and to insulate the battery cell 20 from the heat exchange assembly 30. The first surface 304 is provided with a plurality of protrusions 301, which can shorten the heat transfer distance, increase the heat exchange area, improve the heat exchange efficiency and also improve the structural strength of the heat exchange assembly 30.

[0104] Finally, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will not further explain various possible combinations. In addition, the various different embodiments of the present application can also be combined arbitrarily, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. In other words, the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0105] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: The battery comprises a box body and a battery cell, wherein the battery cell is arranged in the box body, and the battery further comprises: Thermally conductive structure; A heat exchange component, having a first surface facing the battery cell, a gap formed between the first surface and the battery cell, the heat conductive structure filling the gap to allow heat exchange between the battery cell and the heat exchange component; Wherein, at least one protrusion is formed on the heat exchange component, and the protrusion is located in the gap and protrudes from the first surface toward a direction close to the battery cell.

2. The battery according to claim 1, characterized in that Insulating strips are protrudingly provided on two opposite sides of the first surface along the first direction, so that the gap is formed between the first surface and the battery cell.

3. The battery according to claim 2, characterized in that The dimension of the insulating strip along the third direction is greater than the dimension of the protrusion.

4. The battery according to any one of claims 1 to 3, characterized in that A plurality of protrusions are formed on the first surface and are distributed at intervals on the first surface.

5. The battery according to claim 4, characterized in that The plurality of protrusions are extended along the second direction of the heat exchange component, and the plurality of protrusions are arranged at intervals along the first direction of the heat exchange component.

6. The battery according to claim 4, characterized in that The plurality of protrusions are arranged in a ring shape and are distributed at equal intervals.

7. The battery according to any one of claims 4 to 6, characterized in that: The protrusion includes a second surface facing the battery cell, and a distance d between the second surface and the battery cell is d≤1 mm.

8. The battery according to claim 7, characterized in that 0.1mm≤d≤0.5mm.

9. The battery according to any one of claims 1 to 8, characterized in that The heat-conducting structure is a heat-conducting structural adhesive, the heat-conducting structural adhesive is filled in the gap, and the heat exchange component is bonded to the battery cell through the heat-conducting structural adhesive.

10. The battery according to claim 9, characterized in that The battery cell includes a plurality of walls, and the heat exchange assembly is bonded to any of the walls by means of the heat conductive structural adhesive.

11. The battery according to claim 2 or 3, characterized in that: The heat exchange component further includes a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are arranged to protrude from the first surface.

12. The battery according to claim 11, characterized in that The protrusion is arranged in an inner area defined by the fluid inlet, the fluid outlet and the insulating strip.

13. A heat exchange component, characterized in that: Used to regulate the temperature of a battery cell, the heat exchange assembly includes: an upper heat exchange plate, and a lower heat exchange plate fixedly connected to the upper heat exchange plate; the upper heat exchange plate and the lower heat exchange plate together form a flow channel for flowing a heat exchange medium; the upper heat exchange plate has a first surface facing the battery cell, the first surface is formed with at least one protrusion, and the protrusion protrudes in a direction close to the battery cell.

14. An electrical device, characterized in that: The electrical device comprises the battery according to any one of claims 1 to 12 or the heat exchange assembly according to claim 13, and the battery is used to provide electrical energy.

Images