Battery and electric device

Abstract

The present application discloses a battery and an electric device. The battery comprises a bearing plate, a heat exchange member, filling members, an adhesive layer, and battery cells. The heat exchange member is arranged on one side of the bearing plate, and the heat exchange member comprises multiple heat exchange tubes arranged at intervals in a first direction, wherein a gap is formed between adjacent heat exchange tubes. The filling members are at least partially disposed in the gaps. The battery cells are located on the side of the heat exchange member away from the bearing plate. The adhesive layer is sandwiched between the battery cells and the bearing plate, and the battery cells are adhesively connected to the heat exchange tubes by means of the adhesive layer. The battery of the present application can improve structural stability.

Description

Batteries and electrical devices

[0001] Cross-reference of related applications

[0002] This application claims priority to Chinese Patent Application No. 202421160363.7 entitled “Battery and Electrical Device”, filed on May 27, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Technology

[0004] With the development of new energy technologies, batteries are being used more and more widely, for example in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0005] The development of battery technology must take into account multiple design factors. For example, improving the structural strength of batteries is an important research direction in the field of batteries. Summary of the Invention

[0006] This application provides a battery and an electrical device that can improve structural strength.

[0007] In a first aspect, embodiments of this application provide a battery, including a support plate, a heat exchanger, a filler, a battery cell, and an adhesive layer. The heat exchanger is disposed on one side of the support plate and includes a plurality of heat exchange tubes spaced apart along a first direction, with gaps between adjacent heat exchange tubes. At least a portion of the filler is disposed within the gaps. The battery cell is located on the side of the heat exchanger away from the support plate, and the adhesive layer is sandwiched between the battery cell and the support plate. The battery cell is connected to the heat exchange tubes through the adhesive layer.

[0008] In the technical solution of this application embodiment, the battery includes a stacked support plate and a heat exchange component. The heat exchange component includes a plurality of heat exchange tubes spaced apart along a first direction. There is a gap between adjacent heat exchange tubes, and the gap is filled with a filler. By setting the filler, the amount of adhesive layer flowing into the gap can be reduced, so that the adhesive layer is left between the battery cell and the support plate as much as possible, thereby improving the bonding strength between the battery cell and the support plate and improving the overall structural stability of the battery.

[0009] According to some embodiments of this application, the density of the filler is less than the density of the adhesive layer. This allows the lower-density, lighter filler to occupy the space within the gaps, reducing the amount of adhesive layer flowing into the gaps, thereby reducing the weight of the adhesive layer and increasing the overall energy density of the battery.

[0010] According to some embodiments of this application, each gap is provided with a filler. This reduces the amount of adhesive in each gap, thereby improving the weight reduction effect.

[0011] According to some embodiments of this application, the width of the filler in the first direction is 0.2mm-100mm. According to some embodiments of this application, the thickness of the filler is 0.1mm-50mm. By adjusting the size of the filler, the filler can have a suitable volume, and with sufficient heat exchange area in the heat exchange tube, the battery can have a lighter weight and higher energy density.

[0012] According to some embodiments of this application, the thickness of the filler is less than or equal to the thickness of the heat exchanger. This allows the filler to be completely contained within the gap, reducing interference with the battery cells.

[0013] According to some embodiments of this application, the filler is bonded to the carrier plate, or the filler and the carrier plate are integrally formed. The filler can be an independent structure bonded to the carrier plate or a boss protruding from the carrier plate, making the filler easy to process.

[0014] According to some embodiments of this application, the filler includes an elastic element, enabling the filler to adapt to gaps of different shapes and sizes.

[0015] According to some embodiments of this application, the filler includes a polymer foam material. Using a lightweight material that prevents adhesive from easily penetrating the interior further reduces the weight of the adhesive layer in the battery.

[0016] According to some embodiments of this application, the filler includes foam. Foam is stable in nature, low in cost, and easy to process.

[0017] According to some embodiments of this application, a portion of the adhesive layer also fills the gap and bonds the carrier plate and the battery cell. Bonding the battery cell to the carrier plate together further stabilizes the position of the battery cell.

[0018] According to some embodiments of this application, the heat exchanger further includes a manifold, which is disposed at opposite ends of the heat exchanger and connected to multiple heat exchange tubes. A recess is provided on the support plate, and at least a portion of the manifold is accommodated in the recess. This fixes the relative position of the heat exchanger and the support plate and reduces the battery volume.

[0019] According to some embodiments of this application, the battery cell has electrode terminals and / or a pressure relief mechanism on the side away from the support plate. The electrode terminals in the battery cell are typically protruding. Positioning the electrode terminals on the side of the battery cell away from the support plate reduces the risk of interference between the busbar connecting the electrode terminals and the heat exchanger, increases the heat exchange area between the battery cell and the heat exchanger, and improves heat exchange efficiency. Furthermore, in the event of thermal runaway in the battery cell, the high-temperature, high-pressure material released through the pressure relief mechanism will not directly impact the heat exchanger, thereby reducing the risk of leakage of the heat exchange medium in the heat exchanger.

[0020] Secondly, embodiments of this application provide an electrical device, including the battery in any embodiment of the first aspect, the battery being used to provide electrical energy. Attached Figure Description

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0022] Figure 1 is a simplified schematic diagram of a vehicle provided in some embodiments of this application;

[0023] Figure 2 is a schematic diagram of the battery structure provided in some embodiments of this application;

[0024] Figure 3 is a schematic diagram of the explosion of a battery provided in some embodiments of this application;

[0025] Figure 4 is a partial structural schematic diagram of a battery provided in some embodiments of this application;

[0026] Figure 5 is a schematic diagram of the structure of a heat exchanger provided in some embodiments of this application;

[0027] Figure 6 is a cross-sectional view at point A-A' shown in Figure 2;

[0028] Figure 7 is an enlarged view of region P shown in Figure 6;

[0029] Figure 8 is an enlarged view of region Q shown in Figure 7;

[0030] Figure 9 is a partial structural schematic diagram of a battery provided in some other embodiments of this application.

[0031] Reference numerals: 1000-Vehicle; 100-Battery; 200-Controller; 300-Motor; 10-Carrier plate; 20-Heat exchanger; 30-Filler; 40-Battery cell; 50-Adhesive layer; 11-Recess; 21-Heat exchange tube; 22-Gap; 23-Current collector; 41-Electrode terminal; 42-Pressure relief mechanism; X-First direction. Detailed Implementation

[0032] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0033] Unless otherwise defined, 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 pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0034] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0038] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0039] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0040] In this embodiment of the application, the battery cell can be a secondary battery cell, which refers to a battery cell that can be used again after being discharged by recharging to activate the active materials.

[0041] The battery cell can be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-metal hydride battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc., but the embodiments of this application are not limited to this.

[0042] A single battery cell typically includes an electrode assembly. The electrode assembly consists of a positive electrode and a negative electrode. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes.

[0043] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc.

[0044] As an example, a battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries.

[0045] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity.

[0046] In some embodiments, the battery can be a battery pack, which includes a housing and individual battery cells, with the individual battery cells or battery modules housed within the housing.

[0047] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0048] With the development of battery technology, the number of electric vehicles on the market is gradually increasing, and batteries are an important component of these vehicles. Batteries typically employ a structure where individual battery cells are connected to a support plate. This connection can be achieved through adhesive bonding, and heat exchangers for temperature regulation can also be integrated with the support plate to improve space utilization.

[0049] However, in embodiments where the heat exchanger and the support plate are integrated, the battery cells are typically bonded to the heat exchanger and / or the support plate. In such embodiments, the adhesive used for bonding usually flows into and fills the gaps in the heat exchanger, resulting in an increased amount of adhesive required for bonding and a heavier adhesive layer after curing, which in turn leads to a decrease in the overall energy density of the battery.

[0050] In view of this, the present application provides a technical solution in which the battery has a carrier plate, a heat exchange component and a battery cell arranged in sequence. The heat exchange component has heat exchange tubes and gaps between the heat exchange tubes. Fillers are provided in these gaps. By using lighter fillers, the amount of adhesive entering the gaps can be reduced, thereby reducing the weight of the adhesive layer and improving the energy density of the battery.

[0051] The technical solutions described in this application are applicable to batteries and electrical devices that use batteries. Electrical devices include, for example, mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, and power tools. Spacecraft include, for example, airplanes, rockets, space shuttles, and spacecraft. Electric toys include, for example, stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Power tools include, for example, metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as, electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0052] The batteries described in this application are not limited to the electrical devices described above, but for the sake of brevity, the following embodiments are all illustrated using electric vehicles as an example.

[0053] Please refer to Figure 1, which is a simplified schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 can be installed inside the vehicle 1000; specifically, for example, the battery 100 can be installed at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the operating power source for the vehicle 1000. The vehicle 100 may also include a controller 200 and a motor 300. The controller 200, for example, is used to control the battery to supply power to the motor 300. The battery 100 can be used for starting the vehicle 1000, navigation, etc. Of course, the battery 100 can also be used to drive the vehicle 1000, replacing or partially replacing gasoline or natural gas to provide propulsion for the vehicle 1000.

[0054] In battery 100, there can be one or more battery cells 40. If there are multiple battery cells 40, they can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 40 are connected in both series and parallel. Multiple battery cells 40 can be directly connected in series, parallel, or in a mixed manner, and then the whole assembly of multiple battery cells 40 is housed in the housing 500. Alternatively, multiple battery cells 40 can first be connected in series, parallel, or in a mixed manner to form a battery module, and then multiple battery modules can be connected in series, parallel, or in a mixed manner to form a whole assembly, which is then housed in the housing 500.

[0055] In some embodiments, there are multiple battery cells 40, which are first connected in series, parallel, or mixed to form a battery module. The multiple battery modules are then connected in series, parallel, or mixed to form a whole and housed in a housing.

[0056] The structure of battery 100 will now be described with reference to Figures 2 to 8.

[0057] Please refer to Figures 2 to 5 together. Figure 2 is a structural schematic diagram of a battery provided in some embodiments of this application. Figure 3 is an exploded schematic diagram of a battery provided in some embodiments of this application. Figure 4 is a partial structural schematic diagram of a battery provided in some embodiments of this application. Figure 5 is a structural schematic diagram of a heat exchanger provided in some embodiments of this application.

[0058] In a first aspect, embodiments of this application provide a battery 100, including a support plate 10, a heat exchanger 20, a filler 30, a battery cell 40, and an adhesive layer 50. The heat exchanger 20 is disposed on one side of the support plate 10 and includes a plurality of heat exchange tubes 21 spaced apart along a first direction X, with gaps 22 between adjacent heat exchange tubes 21. At least a portion of the filler 30 is disposed within the gaps 22. The battery cell 40 is located on the side of the heat exchanger 20 away from the support plate 10, and the adhesive layer 50 is sandwiched between the battery cell 40 and the support plate 10. The battery cell 40 is bonded to the heat exchange tubes 21 through the adhesive layer 50.

[0059] Optionally, the support plate 10 can be a rectangular plate made of metal, such as stainless steel, aluminum and its alloys, and the thickness of the support plate 10 can be 0.5mm-5mm.

[0060] Optionally, the heat exchanger 20 includes a plurality of heat exchange tubes 21, which may extend parallel to each other and be arranged at intervals. The heat exchange tubes 21 are provided with flow channels, and the heat exchanger 20 has an inlet and an outlet connected to the flow channels, so that the heat exchange medium can flow through the flow channels in the heat exchanger 20 to achieve heat exchange with the battery cell 40.

[0061] Optionally, the heat exchanger 20 includes a plurality of heat exchange tubes 21, which can be connected end to end in sequence to form a passage for the heat exchange medium, or the heat exchange tubes 21 can be arranged in parallel and connected to the same liquid inlet and / or liquid outlet respectively, or the heat exchanger 20 can include a plurality of sub-components, each sub-component including a plurality of heat exchange tubes 21 and the heat exchange tubes 21 in the same sub-component sharing the same liquid inlet and / or liquid outlet.

[0062] Optionally, as shown in Figures 4 and 5, the heat exchange tube 21 can adopt a structure such as a harmonica tube or a serpentine tube, and multiple heat exchange tubes 21 can have the same or similar width.

[0063] For example, a gap 22 is formed between adjacent heat exchange tubes 21, and each heat exchange tube 21 may be selected to extend parallel to each other and be arranged at equal intervals along the first direction X to form a uniform gap 22.

[0064] The battery 100 also includes a filler 30, which is at least partially accommodated in the gap 22. Optionally, there may be one or more fillers 30. In an embodiment with multiple fillers 30, the multiple fillers 30 may be respectively and correspondingly disposed in the multiple gaps 22, or multiple fillers 30 may be disposed in the same gap 22.

[0065] Optionally, depending on the structure and shape of the heat exchange tube 21, the gap 22 can be circular, rectangular, triangular, or polygonal. The gap 22 can be recessed along the thickness direction of the heat exchange element 20 to form a receiving groove in that direction, or the gap 22 can be disposed through the heat exchange element 20 in that direction. The filler 30 can be selected to extend in the same direction as the gap 22.

[0066] Optionally, the battery cell 40 is disposed on the side of the heat exchanger 20 opposite to the support plate 10. The battery cell 40 can be bonded to the heat exchanger 20 by means of an adhesive layer 50. Alternatively, the adhesive layer 50 can be bonded to both the heat exchanger 20 and the filler 30 simultaneously. Or, the adhesive layer 50 can be used to simultaneously bond to the support plate 10, the heat exchanger 20, and the filler 30. Optionally, the battery 100 can contain multiple battery cells 40, which can be arranged in an array.

[0067] One side surface of the battery cell 40 abuts against the heat exchanger 20. Optionally, the area of ​​each battery cell 40 abutting against the heat exchanger 20 can account for more than or equal to 80% of the area of ​​that side surface to improve heat exchange efficiency.

[0068] In the technical solution of this application embodiment, the battery 100 includes a heat exchange component 20 with a plurality of heat exchange tubes 21, and a gap 22 is provided between adjacent heat exchange tubes 21, the gap 22 being filled with a filler 30. By providing the filler 30, the amount of adhesive layer 50 flowing into the gap 22 can be reduced, allowing a larger amount of adhesive layer 50 to remain between the battery cell 40 and the support plate 10, thereby increasing the bonding strength between the adhesive layer 50 and the support plate 10, and thus increasing the bonding strength between the battery cell 40 and the support plate 10, thereby improving the overall structural stability of the battery 100.

[0069] In some alternative embodiments, the density of filler 30 is less than the density of adhesive layer 50.

[0070] Optionally, the density of the filler 30 is less than that of the adhesive layer 50, so that the filler 30 can replace at least part of the adhesive layer 50 to fill the gap 22. Under the same volume conditions, the thickness of the battery 100 can be reduced by using the filler 30 with lower density and lighter weight.

[0071] Optionally, in embodiments where the filler 30 is configured as an independent filling structure filling the gap 22, the density of the filler 30 can be made less than the density of the adhesive layer 50 by adjusting the material or processing technology of the filler 30. When the filler 30 is a structure that protrudes from the main body of the support plate 10 toward the battery cell 40, the average density between the protruding structure, which is made of the same material as the support plate 10, and the cavity enclosed by the protruding structure can be made less than the density of the adhesive layer 50 by adjusting the shape and size of the protrusion.

[0072] Optionally, the battery 100 includes a carrier plate 10 and a heat exchanger 20 stacked together. The heat exchanger 20 includes heat exchange tubes 21 and gaps 22 disposed between the heat exchange tubes 21. By providing a filler 30 in the gap 22, the amount of adhesive flowing into the gap 22 can be reduced when bonding the battery cells 40. At the same time, the filler 30 has a lower density and lighter weight, which can effectively reduce the weight of the bonding layer 50 after bonding, thereby improving the overall energy density of the battery 100.

[0073] In some alternative embodiments, each gap 22 is provided with a filler 30.

[0074] Optionally, the heat exchanger 20 has multiple gaps 22, each of which may be filled with a filler 30, and the filler 30 and the gap 22 may be configured in a one-to-one correspondence. In the extending direction of the gap 22, the extending dimension of the filler 30 may be slightly smaller than the extending dimension of the gap 22.

[0075] Optionally, in embodiments where the width and depth of the gap 22 are the same, the width and thickness of each filler 30 can be the same.

[0076] By placing a filler 30 in each gap 22, the amount of adhesive in each gap 22 can be reduced, thereby improving the weight reduction effect.

[0077] Please refer to Figures 6 and 7 together. Figure 6 is a cross-sectional view along line A-A' shown in Figure 2, and Figure 7 is an enlarged view of region P shown in Figure 6. In some optional embodiments, the width L of the filler 30 in the first direction X is 0.2 mm to 100 mm. In some optional embodiments, the thickness H of the filler 30 is 0.1 mm to 50 mm.

[0078] For example, the width of the filler 30 is 0.2mm-100mm, optionally 5mm-20mm, such as 5mm, 10mm, 15mm, 20mm, etc. The thickness of the filler 30 is 0.1mm-50mm, optionally 1mm-10mm, such as 1mm, 3mm, 5mm, 7mm, 10mm, etc., so that the filler 30 has a volume suitable for the overall dimensions of the heat exchanger 20 and the gap 22.

[0079] In some alternative embodiments, the thickness of the filler 30 is less than or equal to the thickness of the heat exchanger 20.

[0080] Optionally, the thickness of the filler 30 can be slightly less than the thickness of the heat exchanger 20, so that the filler 30 can be completely embedded in the gap 22 and recessed relative to the surface of the heat exchanger 20 toward the support plate 10.

[0081] Optionally, the thickness of each filler 30 can be set according to the depth of the corresponding gap 22 and the overall thickness of the heat exchanger 20, so that each filler 30 can be completely accommodated in the gap 22.

[0082] Enclosing the filler 30 completely within the gap 22 can reduce the interference of the filler 30 on the connection between the battery cell 40 and the heat exchanger 20, thereby further improving the reliability of the battery 100.

[0083] In some alternative embodiments, the filler 30 is bonded to the carrier plate 10, or the filler 30 is integrally formed with the carrier plate 10.

[0084] Optionally, the filler 30 can be an independent structure and connected to the carrier plate 10 by means of bonding or other methods, such as using structural adhesive. In this embodiment, the filler 30 can be first processed into multiple independent structures and then connected to the carrier plate 10 respectively. Optionally, when the filler 30 has a certain elasticity and a certain width, it can also be first pressed and snapped into the gap 22, and then bonded and fixed together in the subsequent step of bonding the battery cell 40.

[0085] Setting the filler 30 as an independent structure with adhesive connection can improve its applicability. When applied to different heat exchanger components 20, different fillers 30 can be cut according to the different sizes and shapes of the gap 22, which is convenient for replacement.

[0086] Alternatively, the filler 30 may also adopt a structure integrally formed with the support plate 10. For example, the filler 30 may be configured as a boss structure protruding from the side surface of the support plate 10 near the heat exchanger 20, so that the boss structure is corresponding to the gap 22 in the heat exchanger 20 in the thickness direction and extends into the gap 22.

[0087] Optionally, the boss structure can be formed by bending the main plate structure of the bearing plate 10, or the boss structure can be a protrusion integrally formed with the main plate structure, or the boss structure can be connected to the main plate structure by welding.

[0088] Alternatively, the boss structure can be configured to have a hollow cavity to reduce weight.

[0089] Setting the filler 30 as an independent structure with adhesive connection or as a boss structure integrally formed with the support plate 10 can make the filler 30 easier to process and install.

[0090] In some alternative embodiments, the filler 30 includes an elastic element.

[0091] Optionally, the filler 30 may be made of elastically deformable materials such as rubber, plastic, or resin. It should be understood that the filler 30 may be selected from the aforementioned materials with a lower density, and its density should be less than that of the adhesive layer 50.

[0092] Optionally, to ensure the strength of the filler 30 is reliable, a protective layer structure such as a wear-resistant layer can be provided on the outer surface of the aforementioned elastic element.

[0093] Setting the filler 30 as an elastic element allows the filler 30 to adapt to gaps 22 of different shapes and sizes. At the same time, it can achieve more comprehensive filling of gaps 22 through its own compression and expansion, reducing the void space, thereby further reducing the weight of the adhesive layer 50 and increasing the energy density of the battery 100.

[0094] In some alternative embodiments, filler 30 comprises a polymer foam material.

[0095] Optionally, the filler 30 can be made of polymer foam material, which refers to a microporous material with countless air bubbles inside, obtained by foaming polymers (such as plastics, rubber, elastomers or natural polymers). Such materials are lightweight, have high specific strength, and have functions such as cushioning, sound absorption and heat insulation. Therefore, materials with a density less than 50 of the adhesive layer can be used as the manufacturing material of the filler 30.

[0096] The filler 30 is made of a lightweight material that prevents adhesive from penetrating the interior, which further reduces the weight of the adhesive layer 50 in the battery 100 and improves the energy density of the battery 100.

[0097] In some alternative embodiments, the filler 30 includes foam.

[0098] Optionally, the filler 30 is made of a material obtained by foaming plastic particles such as foam. Foam has a certain degree of elasticity, is lightweight, has high tensile strength, and can be quickly pressure-sensitively fixed. Making the filler 30 into foam can further reduce weight, and foam is low in cost and easy to process and shape.

[0099] Please refer to Figure 8, which is an enlarged view of region Q shown in Figure 7. In some optional embodiments, the battery 100 includes an adhesive layer 50 that bonds the battery cell 40 and the heat exchange tube 21.

[0100] Optionally, the battery cell 40 is bonded to the heat exchanger 20, for example, by means of structural adhesive.

[0101] For example, the heat exchanger 20 is provided with a gap 22. After the filler 30 is placed in the gap 22, an adhesive layer 50 can be applied to the heat exchanger 20. The adhesive layer 50 can flow into the gap between the wall of the gap 22 and the filler 30 to make the adhesive connection more secure.

[0102] Alternatively, in embodiments where the heat exchanger 20 uses a harmonica tube or similar material with a narrower gap 22, the heat exchanger 20 can support the weight of the battery cell 40, and the two are bonded together.

[0103] In some alternative embodiments, the adhesive layer 50 also fills the gap 22 and bonds the carrier plate 10 and the battery cell 40.

[0104] Optionally, when applying the adhesive, the adhesive layer 50 can cover the heat exchanger 20 and fill the gap 22, so that the adhesive layer 50 can simultaneously bond the battery cell 40, the filler 30, the heat exchanger 20 and the carrier plate 10 together.

[0105] For example, in embodiments where the heat exchanger 20 uses a serpentine tube or other means with a wider gap 22, the adhesive layer 50 can bond the battery cell 40 to the support plate 10 through the gap 22, and the support plate 10 can support the weight of the battery cell 40.

[0106] Filling the gap 22 with adhesive layer 50 can further increase the stability of the connection between the adhesive layer 50 and the battery cell 40.

[0107] Please refer to Figure 9, which is a partial structural schematic diagram of a battery provided in some other embodiments of this application. In some optional embodiments, the heat exchanger 20 is provided with a collector pipe 23 at opposite ends, and the support plate 10 is provided with a recess 11, in which the collector pipe 23 is at least partially accommodated.

[0108] The heat exchanger 20 includes multiple heat exchange tubes 21. Optionally, the heat exchanger 20 may be provided with a manifold 23 at its opposite ends in its extension direction. Multiple heat exchange tubes 21 may be connected to the same manifold 23 and then connected to an external heat exchange medium circulation pipeline through the liquid inlet and liquid outlet provided in the manifold 23.

[0109] Optionally, the heat exchanger 20 may include multiple sub-components, each of which is provided with a manifold 23. The manifolds 23 of adjacent sub-components are independent of each other, thereby reducing the possibility that other sub-components will be affected by blockage or other problems in one sub-component.

[0110] Alternatively, each heat exchange tube 21 in the heat exchanger 20 can be connected to the same manifold 23 to reduce the number of liquid inlets and outlets required, thereby further improving space utilization.

[0111] The support plate 10 may have a recess 11 at the position corresponding to the manifold 23. The recessed shape of the recess 11 matches the shape of the manifold 23, thereby partially embedding the manifold 23 therein. This makes the relative position between the manifold 23 and the support plate 10 more stable and the connection more secure. This makes the overall position of the heat exchanger 20 stable and reliable, and at the same time reduces the overall thickness of the battery 100.

[0112] In some alternative embodiments, the battery cell 40 is provided with electrode terminals 41 and / or pressure relief mechanism 42 on the side away from the support plate 10.

[0113] Optionally, each battery cell 40 has two electrode terminals 41, both of which are located on the side of the battery cell 40 away from the support plate 10. The battery cell 40 may include a bottom wall and an end cap assembly disposed opposite each other. The electrode terminals 41 may be disposed on the end cap assembly. The battery cell 40 is bonded to the support plate 10 and the heat exchanger 20 through the bottom wall.

[0114] Optionally, the electrode terminal 41 and the pressure relief mechanism 42 can both be located on the side of the battery cell 40 away from the support plate 10.

[0115] The electrode terminals 41 in the battery cell 40 are typically protruding. Positioning the electrode terminals 41 on the side of the battery cell 40 away from the support plate 10 reduces the risk of interference between the busbar connecting the electrode terminals 41 and the heat exchanger 20, increases the heat exchange area between the battery cell 40 and the heat exchanger 20, and improves heat exchange efficiency. Furthermore, in the event of thermal runaway in the battery cell 40, the high-temperature and high-pressure substances released through the pressure relief mechanism 42 will not directly impact the heat exchanger 20, thereby reducing the risk of heat exchange medium leakage in the heat exchanger 20.

[0116] Secondly, embodiments of this application provide an electrical device, including the battery 100 in any embodiment of the first aspect, wherein the battery 100 is used to provide electrical energy.

[0117] The electrical device provided in this application embodiment has all the beneficial effects of the battery 100 in any of the embodiments of the first aspect. For details, please refer to the specific description of the battery 100 in the above embodiments. This embodiment will not repeat the description here.

[0118] This application provides a battery 100, including a support plate 10, a heat exchanger 20, a filler 30, a battery cell 40, and an adhesive layer 50. The heat exchanger 20 is disposed on one side of the support plate 10 and includes a plurality of heat exchange tubes 21 spaced apart along a first direction X, with gaps 22 between adjacent heat exchange tubes 21. At least a portion of the filler 30 is disposed in the gaps 22, and each gap 22 contains a filler 30. The battery cell 40 is located on the side of the heat exchanger 20 away from the support plate 10. The adhesive layer 50 is sandwiched between the battery cell 40 and the support plate 10, and the battery cell 40 is connected to the heat exchange tubes 21 and the filler 30 through the adhesive layer 50. The density of at least a portion of the filler 30 is less than the density of the adhesive layer 50. The filler 30 includes foam and is bonded to the support plate 10.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, comprising: Support plate; A heat exchanger is disposed on one side of the support plate. The heat exchanger includes a plurality of heat exchange tubes spaced apart along a first direction, and a gap is provided between adjacent heat exchange tubes. A filler, at least a portion of which is disposed within the gap; The battery cell is located on the side of the heat exchanger away from the support plate; as well as An adhesive layer is sandwiched between the battery cell and the carrier plate, and the battery cell is bonded to the heat exchange tube through the adhesive layer.

2. The battery according to claim 1, wherein, The density of the filler is less than the density of the adhesive layer.

3. The battery according to claim 2, wherein, Each of the aforementioned gaps is provided with the aforementioned filler.

4. The battery according to claim 2, wherein, In the first direction, the width of the filler is 0.2mm-100mm.

5. The battery according to claim 2, wherein, A second direction is defined to be perpendicular to the first direction, and in the second direction, the thickness of the filler is 0.1mm-50mm.

6. The battery according to claim 2, wherein, The thickness of the filler is less than or equal to the thickness of the heat exchanger.

7. The battery according to claim 1, wherein, The filler is bonded to the support plate, or the filler is integrally formed with the support plate.

8. The battery according to claim 1, wherein, The filler includes an elastic element.

9. The battery according to claim 1, wherein, The filler includes a polymer foam material.

10. The battery according to claim 9, wherein, The filler includes foam.

11. The battery according to claim 1, wherein, A portion of the adhesive layer also fills the gap and bonds the carrier plate and the battery cell.

12. The battery according to claim 1, wherein, The heat exchanger also includes a manifold, which is disposed at opposite ends of the heat exchanger and connected to a plurality of heat exchange tubes. The support plate is provided with a recess, and at least a portion of the manifold is accommodated in the recess.

13. The battery according to any one of claims 1-12, wherein, The battery cell is provided with electrode terminals and / or a pressure relief mechanism on the side away from the support plate.

14. An electrical device comprising a battery according to any one of claims 1-13, the battery being used to provide electrical energy.

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