Heat exchange assembly, battery device and power utilization device

Abstract

The embodiment of the utility model provides a heat exchange assembly, a battery device and an electric device. The battery device comprises a box body, a heat exchange assembly and a plurality of single batteries, the plurality of single batteries are arranged in the box body; the heat exchange assembly comprises at least two heat exchange pieces, at least one heat exchange piece is arranged to be a flexible piece, and at least one heat exchange piece is arranged to be a rigid piece. The elastic modulus of at least a partial region of the flexible member is smaller than the elastic modulus of the rigid member. The flexible part and the rigid part are arranged in a stacked mode to form at least one medium flow channel. The at least one medium flow channel is used for conducting a heat exchange medium, and the heat exchange medium is used for exchanging heat with the plurality of single batteries. The flexible part is arranged on one side, deviating from the battery monomers, of the rigid part. The mass of the flexible part is light, the mass of the heat exchange assembly is reduced, the rigid part can support the flexible part, the overall structural strength and stability of the heat exchange assembly are improved, and the heat exchange efficiency and the heat exchange effect of the heat exchange assembly are improved.

Description

Technical Field

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

[0002] In a new energy vehicle equipped with a battery device, the battery device can be used to provide power in whole or in part. During the use of the battery device, the battery cells inside the battery device will generate heat. If these heats are too high, it will have an adverse impact on the performance and service life of the battery device. Therefore, how to effectively dissipate the heat of the battery cells of the battery device while reducing the weight of the heat exchange component has become an important research direction in this field. Summary of the Utility Model

[0003] In view of this, the embodiments of the present application are expected to provide a heat exchange component, a battery device, and an electrical device, which can reduce the weight of the heat exchange component to a certain extent.

[0004] To this end, the first aspect of the embodiments of the present application provides a battery device, including:

[0005] A box body;

[0006] A plurality of battery cells, the plurality of battery cells are arranged inside the box body;

[0007] A heat exchange component, the heat exchange component includes at least two heat exchange elements, at least one of the heat exchange elements is set as a flexible element, at least one of the heat exchange elements is set as a rigid element, the elastic modulus of at least part of the region of the flexible element is less than the elastic modulus of the rigid element, the flexible element and the rigid element are stacked to form at least one medium flow channel, the at least one medium flow channel is used to conduct a heat exchange medium, and the heat exchange medium is used to exchange heat with the plurality of battery cells; wherein, the flexible element is arranged on the side of the rigid element away from the battery cells.

[0008] The battery device provided by the embodiment of the present application includes a box body, a heat exchange component, and a plurality of battery cells. The plurality of battery cells are arranged in the box body, and the box body plays a protective role for the battery cells. The heat exchange component is used for heat exchange with the battery cells. On the one hand, by setting at least one heat exchange element as a flexible element, the flexible element has a light weight, which is beneficial to reducing the weight of the heat exchange component, and thus is beneficial to reducing the weight of the battery device. On the other hand, by setting at least one heat exchange element as a rigid element, the flexible element and the rigid element are stacked to form at least one medium flow channel. The rigid element can support the flexible element, which is beneficial to improving the overall structural strength and stability of the heat exchange component, and further improving the heat exchange efficiency and heat exchange effect of the heat exchange component. In addition, by setting the rigid element, the heat exchange component has sufficient structural strength to carry the battery cells, improving the applicability of the heat exchange component. By arranging the flexible element on the side of the rigid element away from the battery cells, that is, the flexible element does not directly contact the battery cells, in this way, the situation that the battery cells squeeze the flexible element due to thermal expansion or the situation that the battery cells squeeze the flexible element under the action of gravity can be avoided. To a certain extent, the situation that the battery cells crush the medium flow channel can be avoided, thereby improving the reliability of the heat exchange component.

[0009] In some embodiments, the flexible element includes a reinforcing portion and a flexible portion, and the elastic modulus of the flexible portion is less than that of the reinforcing portion.

[0010] In this way, according to requirements, a partial area of the flexible element can be set as the reinforcing portion, so that the elastic modulus of this area is greater than that of the flexible portion, thereby while enabling the flexible element to have a flexible function and reducing the weight of the flexible element, it is also beneficial to improving the overall structural strength and stability of the flexible element.

[0011] In some embodiments, at least part of the medium flow channel is formed in the flexible portion.

[0012] Here, by forming at least part of the medium flow channel in the flexible portion, the flexible function of the flexible portion can make the heat exchange surface of the heat exchange component contact the battery cells better, providing better heat exchange capacity.

[0013] In some embodiments, the thickness of the flexible portion is less than that of the reinforcing portion.

[0014] That is to say, the thickness of the flexible portion of the flexible element can be reduced by thinning the flexible portion, or by setting the number of layers of the flexible element in the flexible portion to be less than the number of layers of the flexible element in the reinforcing portion, so that the thickness of the flexible portion is less than that of the reinforcing portion.

[0015] In some embodiments, the material of the flexible portion is different from that of the reinforcing portion.

[0016] That is, by setting the materials of the flexible part and the reinforcing part to be different, the elastic modulus of the flexible part is made smaller than that of the reinforcing part.

[0017] In some embodiments, at least part of the reinforcing part is arranged at the edge of the flexible part.

[0018] In this way, the overall structural strength and stability of the flexible part can be further improved.

[0019] In some embodiments, the flexible part and the rigid part are hot-pressed to form a hot-pressed area and the medium flow channel, and the flexible part and the rigid part are connected to each other in at least part of the hot-pressed area.

[0020] In this embodiment, the flexible part is sealed by a hot-pressing process, that is, a hot-pressed area is formed by hot-pressing, and the hot-pressed area divides the heat exchange component to form at least one medium flow channel. This forming method is simple.

[0021] In some embodiments, the heat exchange component includes a first anti-corrosion layer, and the first anti-corrosion layer is provided in the area where the rigid part at least forms the medium flow channel.

[0022] In this embodiment, by providing a first anti-corrosion layer in the area where the rigid part at least forms the medium flow channel, the first anti-corrosion layer can improve the situation where the heat exchange medium damages the rigid part, which is beneficial to improving the reliability of the heat exchange component.

[0023] In some embodiments, the first anti-corrosion layer is set as a metalized plastic film.

[0024] In this embodiment, since the metalized plastic film has a thin thickness and a small weight, and a medium flow channel is formed between the metalized plastic film and the flexible part, it is not affected by the extrusion process and does not need to meet large thickness requirements. Therefore, the overall thickness and weight of the heat exchange component can be reduced. At the same time, due to the insulating characteristics of the heat exchange component, the possibility of insulation failure can be reduced. The risk of reaction between the rigid part and the heat exchange medium flowing inside is reduced, and the possibility of corrosion and leakage of the heat exchange medium is further reduced.

[0025] In some embodiments, the first anti-corrosion layer is set as an aluminum-plastic film.

[0026] The aluminum-plastic film has high barrier properties, good cold stamping formability, puncture resistance, electrolyte stability resistance, and electrical insulation.

[0027] In some embodiments, the heat exchange component includes a second anti-corrosion layer;

[0028] The second anti-corrosion layer is provided on the side of the rigid part facing away from the flexible part; and / or,

[0029] The second anti-corrosion layer is provided on the side of the flexible member facing away from the rigid member; and / or,

[0030] The second anti-corrosion layer is provided on the side of the heat exchange assembly.

[0031] That is to say, on the side of the rigid member facing away from the medium flow channel, that is, on the outer side of the rigid member, a second anti-corrosion layer is provided. The second anti-corrosion layer can reduce the corrosion of the rigid member by external corrosive substances, thereby improving the reliability of the heat exchange assembly.

[0032] That is to say, on the side of the flexible member facing away from the medium flow channel, that is, on the outer side of the flexible member, a second anti-corrosion layer is provided. The second anti-corrosion layer can reduce the corrosion of the flexible member by external corrosive substances, thereby improving the reliability of the heat exchange assembly.

[0033] In this way, on the one hand, the second anti-corrosion layer can reduce the corrosion of the flexible member and the side of the rigid member by external corrosive substances. On the other hand, it can also reduce the penetration of external corrosive substances from the connection between the flexible member and the rigid member into the gap between the flexible member and the rigid member, further improving the reliability of the heat exchange assembly.

[0034] In some embodiments, the second anti-corrosion layer includes nylon.

[0035] Here, the second anti-corrosion layer can be a nylon layer formed of nylon material, thus having certain corrosion resistance properties, such as acid and alkali corrosion resistance.

[0036] In some embodiments, the flexible member includes a metal-plastic film.

[0037] In this embodiment, since the metal-plastic film has a thin thickness and small weight, and a medium flow channel is formed between the metal-plastic film and the heat exchange member, it is not affected by the extrusion process and does not need to meet large thickness requirements, so the overall thickness and weight of the heat exchange assembly can be reduced. At the same time, due to the insulating characteristics of the heat exchange assembly, the possibility of insulation failure can be reduced. The risk of reaction between the heat exchange assembly and the heat exchange medium flowing inside is reduced, and the possibility of corrosion and leakage of the heat exchange medium is further reduced.

[0038] In some embodiments, the flexible member includes an aluminum-plastic film.

[0039] The aluminum-plastic film has high barrier properties, good cold stamping formability, puncture resistance, electrolyte stability, and electrical insulation.

[0040] In some embodiments, the flexible member is a layered structure, the flexible member includes a metal layer and a non-metal layer, and the metal layer and the non-metal layer are stacked in sequence.

[0041] In this embodiment, the flexible member formed by sequentially laminating a metal layer and a non-metal layer has a small thickness and weight, and by forming a dielectric flow channel between the flexible member and the rigid member, it is not affected by the extrusion process and does not need to meet large thickness requirements, so the overall thickness and weight of the heat exchange component can be reduced. In addition, the heat exchange component will not react with the heat exchange medium flowing inside, so there is no possibility of corrosion and leakage.

[0042] In some embodiments, the metal layer includes one or more of aluminum foil, copper foil, and steel foil; and / or,

[0043] the non-metal layer includes one or more of polypropylene, polyphenylene sulfide, polyphthalamide, and polyethylene.

[0044] By setting the metal layer as one or more of aluminum foil, copper foil, and steel foil, the flexible member can have a certain structural strength and can play an isolation role.

[0045] By setting the non-metal layer as one or more of polypropylene, polyphenylene sulfide, polyphthalamide, and polyethylene, the flexible member can have a certain waterproof function.

[0046] In some embodiments, the non-metal layer is a hot melt layer.

[0047] Here, by setting the non-metal layer as a hot melt layer, that is, composed of a hot melt material, it is beneficial to make the non-metal layer and the metal layer composite together through hot melting, with simple molding and high production efficiency.

[0048] In some embodiments, the flexible member is a layered structure, and the flexible member includes a first anti-corrosion layer, an isolation layer, and a second anti-corrosion layer arranged in sequence, and the first anti-corrosion layer is closer to the dielectric flow channel than the second anti-corrosion layer.

[0049] In this embodiment, by setting the flexible member to include a first anti-corrosion layer, an isolation layer, and a second anti-corrosion layer arranged in sequence, and the second anti-corrosion layer is closer to the dielectric flow channel than the first anti-corrosion layer, it is beneficial to improve the reliability of the heat exchange component.

[0050] In some embodiments, the thickness of the flexible member is 0.05 mm - 0.3 mm.

[0051] In this embodiment, by setting the thickness of the flexible member to 0.05 mm - 0.3 mm, while the heat exchange component made of the flexible member has a certain structural strength, the overall thickness of the heat exchange component is small, which is beneficial to reducing the overall volume and weight of the battery device to increase the energy density of the battery device.

[0052] In some embodiments, the thickness of the flexible member is 0.08 mm - 0.2 mm.

[0053] In this embodiment, by setting the thickness of the flexible member to 0.08 mm - 0.2 mm, while the heat exchange assembly made of the flexible member has a certain structural strength, further, the overall thickness of the heat exchange assembly is relatively small, which is beneficial to further reducing the overall volume and weight of the battery device, so as to further increase the energy density of the battery device.

[0054] In some embodiments, the elastic modulus of the flexible member is 0.1 MPa - 10,000 MPa.

[0055] In this embodiment, by setting the elastic modulus of the flexible member to 0.1 MPa - 10,000 MPa, on one hand, the flexible member has a certain structural strength, improving the reliability of the heat exchange assembly, and on the other hand, it has a certain deformation ability, which can enhance the fitting degree between the heat exchange assembly and the box body and / or the battery cell, thereby increasing the effective heat exchange area between the heat exchange assembly and the box body and / or the battery cell, and thus improving the heat exchange efficiency and heat exchange effect of the heat exchange assembly.

[0056] In some embodiments, the rigid member is set as a metal plate.

[0057] In this embodiment, by setting the rigid member as a metal plate, the metal plate not only has good structural strength but also has good heat conduction performance. That is to say, while meeting a certain heat exchange efficiency of the heat exchange assembly, the rigid member can also play a certain supporting role for the flexible member.

[0058] In a second aspect of the embodiments of the present application, a heat exchange assembly is provided. The heat exchange assembly includes at least two heat exchange members, at least one of the heat exchange members is set as a flexible member, at least one of the heat exchange members is set as a rigid member, the elastic modulus of at least a part of the flexible member is less than that of the rigid member, the flexible member and the rigid member are stacked to form at least one medium flow channel, the at least one medium flow channel is used for conducting a heat exchange medium, and the heat exchange medium is used for exchanging heat with the battery cell; wherein, the flexible member is disposed on a side of the rigid member away from the battery cell.

[0059] The heat exchange component provided by the embodiment of the present application, on the one hand, by setting at least one heat exchange element as a flexible element, the flexible element has a light weight, which is beneficial to reducing the weight of the heat exchange component, and thus beneficial to reducing the weight of the battery device. On the other hand, by setting at least one heat exchange element as a rigid element, the flexible element and the rigid element are stacked to form at least one medium flow channel. The rigid element can support the flexible element, which is beneficial to improving the overall structural strength and stability of the heat exchange component, and further improving the heat exchange efficiency and heat exchange effect of the heat exchange component. In addition, by setting the rigid element, the heat exchange component has sufficient structural strength to carry the battery cell, improving the applicability of the heat exchange component. By arranging the flexible element on the side of the rigid element away from the battery cell, that is, the flexible element does not directly contact the battery cell, in this way, it is possible to avoid the situation that the battery cell extrudes the flexible element due to thermal expansion, or avoid the situation that the battery cell extrudes the flexible element under the action of gravity. To a certain extent, it is possible to avoid the situation that the battery cell crushes the medium flow channel, thereby improving the reliability of the heat exchange component.

[0060] The third aspect of the embodiment of the present application provides an electric device, including the battery device or the heat exchange component described above.

[0061] The battery device of the electric device provided by the embodiment of the present application includes a box body, a heat exchange component and a plurality of battery cells. The plurality of battery cells are arranged in the box body, and the box body plays a protective role for the battery cell assembly. The heat exchange component is used for heat exchange with the battery cell assembly. On the one hand, by setting at least one heat exchange element as a flexible element, the flexible element has a light weight, which is beneficial to reducing the weight of the heat exchange component, and thus beneficial to reducing the weight of the battery device. On the other hand, by setting at least one heat exchange element as a rigid element, the flexible element and the rigid element are stacked to form at least one medium flow channel. The rigid element can support the flexible element, which is beneficial to improving the overall structural strength and stability of the heat exchange component, and further improving the heat exchange efficiency and heat exchange effect of the heat exchange component. In addition, by setting the rigid element, the heat exchange component has sufficient structural strength to carry the battery cell, improving the applicability of the heat exchange component. By arranging the flexible element on the side of the rigid element away from the battery cell, that is, the flexible element does not directly contact the battery cell, in this way, it is possible to avoid the situation that the battery cell extrudes the flexible element due to thermal expansion, or avoid the situation that the battery cell extrudes the flexible element under the action of gravity. To a certain extent, it is possible to avoid the situation that the battery cell crushes the medium flow channel, thereby improving the reliability of the heat exchange component. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a schematic structural diagram of a vehicle provided by an embodiment of the present disclosure;

[0063] Figure 2 It is a three-dimensional exploded view of a battery device provided by an embodiment of the present disclosure;

[0064] Figure 3 Schematic exploded perspective view of the heat exchange component provided by the first embodiment of the present disclosure;

[0065] Figure 4 Schematic exploded perspective view of the flexible member provided by an embodiment of the present disclosure;

[0066] Figure 5 Schematic exploded perspective view of the heat exchange component provided by the second embodiment of the present disclosure;

[0067] Figure 6 Schematic structural view of the heat exchange component provided by an embodiment of the present disclosure.

[0068] Explanation of reference numerals

[0069] 10. Battery cell; 20. Box body; 21. Box main body; 211. First box part; 212. Second box part; 22. Bottom guard plate; 23. Accommodation cavity; 30. Heat exchange component; 31. Flexible member; 311. Hot pressing area; 312. Medium flow channel; 313. First anti-corrosion layer; 314. Isolation layer; 315. Second anti-corrosion layer; 316. Reinforcing part; 317. Flexible part; 32. Rigid member; 34. Connecting member; 100. Battery device; 200. Controller; 300. Motor; 1000. Vehicle. Detailed implementation manners

[0070] If there is no special indication, all embodiments and optional embodiments of the present disclosure can be combined with each other to form a new technical solution.

[0071] If there is no special indication, all technical features and optional technical features of the present disclosure can be combined with each other to form a new technical solution.

[0072] With the development of clean energy, more and more devices use electric energy as the driving energy. As a result, power batteries that can store a large amount of electric energy and can be charged and discharged repeatedly have developed rapidly, such as lithium-ion batteries. Among them, power batteries are not only applied to energy storage power systems such as hydroelectric, thermal, wind, and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as many fields such as aerospace.

[0073] In the embodiments of the present disclosure, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging to continue use.

[0074] The battery cell can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium-metal battery, a sodium-metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present disclosure do not limit this.

[0075] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator, and the separator is disposed between the negative electrode and the positive electrode. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the short circuit between the positive and negative electrodes and at the same time allow the active ions to pass through.

[0076] The electrode assembly can be a wound structure, a stacked structure, or a hybrid structure of winding and stacking.

[0077] In some embodiments, the electrode assembly is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0078] In some embodiments, the electrode assembly is a stacked structure.

[0079] As an example, multiple positive electrode sheets and multiple negative electrode sheets can be respectively provided, and the multiple positive electrode sheets and the multiple negative electrode sheets are alternately stacked.

[0080] As an example, multiple positive electrode sheets can be provided, and the negative electrode sheet is folded to form multiple stacked folding segments, and a positive electrode sheet is clamped between adjacent folding segments.

[0081] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form multiple stacked folding segments.

[0082] As an example, multiple separators can be provided and are respectively disposed between any adjacent positive electrode sheets or negative electrode sheets.

[0083] As an example, the separator can be continuously provided and is disposed between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0084] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or multi-prismatic, etc.

[0085] In some embodiments, the electrode assembly is provided with tabs, and the tabs can conduct the current out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0086] In some embodiments, a battery cell may include a housing. The housing may be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite housing), or an aluminum plastic film, etc. In some embodiments, the housing may be a sealed structure or a non-sealed structure. As an example, when the housing is a non-sealed structure, the housing serves to protect the electrode assembly, and a sealing bag is further included between the housing and the electrode assembly, and the sealing bag is used to encapsulate the electrode assembly and the electrolyte. Specifically, the sealing bag may be a bag-shaped insulating member or an aluminum plastic film. When the housing is a sealed structure, it is used to encapsulate components such as the electrode assembly and the electrolyte.

[0087] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. The prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal prism battery, etc., and the present disclosure has no particular limitation.

[0088] In some embodiments, the housing includes an end cap and a housing body. The housing body is provided with an opening, and the end cap covers the opening. The housing body may be provided with one or more openings. One or more end caps may also be provided.

[0089] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab. The electrode terminal may be directly connected to the tab or indirectly connected to the tab through a current collector member. The electrode terminal may be provided on the end cap or on the housing body.

[0090] In some embodiments, the energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0091] During the use of the battery device, the battery cells in the battery device will generate heat. If these heats are too high, it will have an adverse impact on the performance and service life of the battery device. Therefore, how to effectively dissipate the heat of the battery cells of the battery device while reducing the weight of the heat exchange component has become an important research direction in this field. In the related art, a cooling system is provided in the battery device box to cool the battery cells in the battery device. The above cooling system may include a plurality of aluminum water-cooled plates laid in the battery device box, and the surfaces of the plurality of water-cooled plates are in contact with the surfaces of the battery cells in the battery device. During use, for example, a heat exchange medium such as water flows through the above plurality of water-cooled plates, thereby taking away the heat on the battery cells and cooling the battery cells. However, the aluminum water-cooled plates in the above cooling system have the problem of being relatively heavy.

[0092] In view of this, in order to reduce the weight of the heat exchange component, an embodiment of the present disclosure provides a battery device, which includes a box body, a heat exchange component, and a plurality of battery cells. The plurality of battery cells are arranged in the box body. The heat exchange component includes at least two heat exchange elements, at least one heat exchange element is arranged as a flexible element, and at least one heat exchange element is arranged as a rigid element. The elastic modulus of at least a part of the flexible element is less than that of the rigid element. The flexible element and the rigid element are stacked to form at least one medium flow channel. At least one medium flow channel is used to conduct a heat exchange medium, and the heat exchange medium is used to exchange heat with the plurality of battery cells.

[0093] The battery device provided by the embodiment of the present application includes a box body, a heat exchange component, and a plurality of battery cells. The plurality of battery cells are arranged in the box body, and the box body plays a protective role for the battery cell assembly. The heat exchange component is used to exchange heat with the battery cell assembly. On the one hand, by arranging at least one heat exchange element as a flexible element, the flexible element has a relatively light mass, which is beneficial to reducing the mass of the heat exchange component, and thus beneficial to reducing the mass of the battery device. On the other hand, by arranging at least one heat exchange element as a rigid element, the flexible element and the rigid element are stacked to form at least one medium flow channel. The rigid element can support the flexible element, which is beneficial to improving the overall structural strength and stability of the heat exchange component, and further improving the heat exchange efficiency and heat exchange effect of the heat exchange component. In addition, by arranging the rigid element, the heat exchange component has sufficient structural strength to carry the battery cells, improving the applicability of the heat exchange component. By arranging the flexible element on the side of the rigid element away from the battery cells, that is, the flexible element does not directly contact the battery cells. In this way, it is possible to avoid the situation where the battery cells squeeze the flexible element due to thermal expansion, or avoid the situation where the battery cells squeeze the flexible element under the action of gravity. To a certain extent, it is possible to avoid the situation where the battery cells crush the medium flow channel, thereby improving the reliability of the heat exchange component.

[0094] The technical solution described in the embodiment of the present disclosure is applicable to an electrical device using the battery device. The electrical device includes the battery device according to any embodiment of the present disclosure, and the battery device is used to provide electrical energy.

[0095] The electrical device can be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or an extended-range electric vehicle, etc.; the spacecraft includes an airplane, a rocket, a space shuttle, a spaceship, etc.; the electric toy includes a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric airplane toy, etc.; the electric tool includes a metal cutting electric tool, a grinding electric tool, an assembly electric tool and a railway electric tool, for example, an electric drill, an electric grinding wheel, an electric wrench, an electric screwdriver, a hammer drill, an impact electric drill, a concrete vibrator and a power planer, etc. The embodiments of the present disclosure do not impose special restrictions on the above electrical devices.

[0096] It should be noted that the technical solutions described in the embodiments of the present disclosure are not only applicable to the above-described battery device, but also applicable to all electrical devices including the battery device and energy storage devices. However, for the sake of simplicity of description, the following embodiments will be described by taking an electric vehicle as an example.

[0097] Please refer to Figure 1 , inside the vehicle 1000, a controller 200, a motor 300 and a battery device 100 can be provided. The controller 200 is used to control the battery device 100 to supply power to the motor 300. For example, the battery device 100 can be provided at the bottom, the front end or the rear end of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000. For example, the battery device 100 can be used as the operating power source of the vehicle 1000 and be used for the circuit system of the vehicle 1000, for example, for the working power requirements during the start, navigation and operation of the vehicle 1000. In another embodiment of the present disclosure, the battery device 100 can not only be used as the operating power source of the vehicle 1000, but also be used as the driving power source of the vehicle 1000 to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0098] Please refer to Figure 2, To meet different power usage requirements, the battery device includes a plurality of battery cells 10. A battery cell 10 refers to the smallest unit that makes up a battery module or a battery pack. The plurality of battery cells 10 can be connected in series, in parallel, or in a combined series-parallel connection. A combined series-parallel connection means that among the plurality of battery cells 10, there are both series and parallel connections. The plurality of battery cells 10 can be directly connected in series, in parallel, or in a combined series-parallel connection together, and then the whole formed by the plurality of battery cells 10 is accommodated in the box body 20; of course, the battery device 100 can also be in the form that a plurality of battery cells 10 are first connected in series, in parallel, or in a combined series-parallel connection to form battery modules, and then the plurality of battery modules are connected in series, in parallel, or in a combined series-parallel connection to form a whole and are accommodated in the box body 20. The battery device 100 can also include other structures. For example, the battery device 100 can also include a busbar component for realizing the electrical connection between the plurality of battery cells 10. Among them, each battery cell 10 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 10 can be in a cylindrical shape, a flat shape, a cuboid shape, or other shapes, etc.

[0099] Please refer to Figures 2 to 6 , An embodiment of the present disclosure provides a battery device 100, which includes a box body 20, a heat exchange component 30, and a plurality of battery cells 10. The plurality of battery cells 10 are arranged in the box body 20. The heat exchange component 30 includes at least two heat exchange elements, at least one heat exchange element is arranged as a flexible element 31, and at least one heat exchange element is arranged as a rigid element 32. The elastic modulus of at least part of the area of the flexible element 31 is less than that of the rigid element 32. The flexible element 31 and the rigid element 32 are stacked to form at least one medium flow channel 312. At least one medium flow channel 312 is used to conduct a heat exchange medium, and the heat exchange medium is used to exchange heat with the plurality of battery cells 10.

[0100] In the embodiments of the present application, the term "plurality" refers to a quantity of two or more.

[0101] Please refer to Figure 2 , The battery device 100 includes a box body 20 and a plurality of battery cells 10, and the plurality of battery cells 10 are arranged in the box body 20.

[0102] The box body 20 can be a simple three-dimensional structure such as a single cuboid, cylinder, or sphere, etc., or a complex three-dimensional structure composed of a combination of simple three-dimensional structures such as a cuboid, cylinder, or sphere. The material of the box body 20 can be alloy materials such as aluminum alloy and ferroalloy, or polymer materials such as polycarbonate and polyisocyanurate foam plastics, or composite materials such as glass fiber reinforced epoxy resin.

[0103] The box body 20 is used to encapsulate the battery cells 10, and the box body 20 can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells 10.

[0104] Exemplarily, the box body 20 is generally a cuboid structure. The length direction and the width direction of the box body 20 are both parallel to the horizontal plane, and the length direction of the box body 20 is parallel to the longest side of the cuboid structure of the box body 20. The height direction of the box body 20 is perpendicular to the ground. Exemplarily, as Figure 2 shown, the length direction of the box body 20 is represented by X, the width direction of the box body 20 is represented by Y, and the height direction of the box body 20 is represented by Z.

[0105] Please refer to Figures 3 to 6 , an embodiment of the present disclosure provides a heat exchange assembly 30. The heat exchange assembly 30 includes at least two heat exchange elements. At least one heat exchange element is provided as a flexible member 31, and at least one heat exchange element is provided as a rigid member 32. The elastic modulus of at least a part of the flexible member 31 is less than the elastic modulus of the rigid member 32. The flexible member 31 and the rigid member 32 are stacked to form at least one medium flow channel 312. At least one medium flow channel 312 is used to conduct the heat exchange medium, and the heat exchange medium is used to exchange heat with a plurality of battery cells 10. Among them, the flexible member 31 is disposed on a side of the rigid member 32 facing away from the battery cell 10.

[0106] Here, the flexibility in the flexible member 31 refers to the material property of the structure. Such a type of property can be the property given to the material due to the relatively light mass of the material, or can be the property given to the material due to at least any one of the properties such as the thickness, stiffness, strength, and elastic modulus of the material. As an example, the material of the flexible member 31 can be selected as a material with a relatively light mass compared to conventional aluminum plates, steel plates, etc., and its flexibility can be controlled by the thickness, width, length, and type of the material of the flexible member 31. By setting the heat exchange assembly 30 in a form including the flexible member 31 in the embodiment of the present disclosure, it is beneficial to reduce the weight of the heat exchange assembly 30.

[0107] Here, the rigidity in the rigid member 32 refers to the material property of the structure. Such a type of property can be the property given to the material due to the relatively light mass of the material, or can be the property given to the material due to at least any one of the properties such as the thickness, stiffness, strength, and elastic modulus of the material. As an example, the material of the rigid member 32 can be selected as a metal plate similar to conventional aluminum plates, steel plates, etc., or a material such as a composite plate, and its rigidity can be controlled by the thickness, width, length, and type of the material of the rigid member 32. By setting the heat exchange assembly 30 in a form including the rigid member 32 in the embodiment of the present disclosure, it can play a supporting role for the flexible member 31, which is beneficial to improving the overall structural strength and stability of the heat exchange assembly 30.

[0108] Here, it can be that the elastic modulus of a part of the flexible member 31 is less than the elastic modulus of the rigid member 32, or it can be that the elastic modulus of all regions of the flexible member 31 is less than the elastic modulus of the rigid member 32.

[0109] By setting the heat exchange component 30 to include a flexible member 31 and a rigid member 32, while enabling the heat exchange component 30 to have a flexible function, the heat exchange component 30 can also have a certain structural strength.

[0110] The flexible member 31 and the rigid member 32 are stacked to form at least one medium flow channel 312, which means that the heat exchange component 30 forms the medium flow channel 312 between the flexible member 31 and the rigid member 32. In other words, the flexible member 31 constitutes at least part of the side wall of the medium flow channel 312, and the rigid member 32 also constitutes at least part of the side wall of the medium flow channel 312. The heat exchange medium circulates in the medium flow channel 312 to achieve heat exchange with the battery cell 10.

[0111] It should be noted that the specific type of the heat exchange medium is not limited here, as long as it can achieve a heat exchange effect on the battery cell 10. For example, it can be gaseous or liquid. In the embodiments of the present disclosure, the heat exchange medium is taken as a coolant as an example for description.

[0112] It should be noted that the specific number of the medium flow channels 312 is not limited here. It can be one or multiple.

[0113] The heat exchange component 30 includes at least two heat exchange members, that is to say, the number of the heat exchange members is multiple.

[0114] At least one heat exchange member being set as the flexible member 31 means that the number of the flexible members 31 is one or multiple. In the embodiments where multiple heat exchange members are set as the flexible members 31, the flexible members 31 can be the same or different.

[0115] At least one heat exchange member being set as the rigid member 32 means that the number of the rigid members 32 is one or multiple. In the embodiments where multiple heat exchange members are set as the rigid members 32, the rigid members 32 can be the same or different.

[0116] Exemplarily, the heat exchange component 30 includes two heat exchange members, one of which is the flexible member 31 and the other is the rigid member 32.

[0117] Exemplarily, the rigid member 32 is a rigid plate-like structure, which can support the flexible member 31, thereby facilitating the improvement of the overall structural strength and stability of the heat exchange component 30.

[0118] Exemplarily, the rigid member 32 can also be stamped or welded into a specific structure according to requirements for functions such as support.

[0119] Exemplarily, the heat exchange component 30 further includes an inlet and an outlet, and both the inlet and the outlet are communicated with the medium flow channel 312.

[0120] Here, the inlet and outlet of the heat exchange assembly 30 are used for connecting to the pipelines of the air conditioning system or liquid storage devices such as water tanks of the whole vehicle or the electrical device.

[0121] Exemplarily, please refer to Figure 3 , the heat exchange assembly 30 further includes a connector 34 having an inlet and a connector 34 having an outlet, and the connector 34 is connected to the rigid member 32.

[0122] Exemplarily, the connector 34 is brazed to the rigid member 32.

[0123] Exemplarily, the connector 34 is a water nozzle, for example.

[0124] The principle of the heat exchange assembly 30 for heat exchanging the battery cell 10 is as follows: the heat exchange medium output by the heat exchange medium source (not shown in the figure) enters the medium flow channel 312 through the inlet of the heat exchange assembly 30. After the heat exchange medium exchanges heat with the battery cell 10, the heat exchange medium flows out through the outlet of the heat exchange assembly 30, completing the heat exchange of the battery cell 10.

[0125] Here, the heat exchange assembly 30 for heat exchanging the battery cell 10 can dissipate heat from the battery cell 10 or can also heat the battery cell 10.

[0126] The principle of the heat exchange assembly 30 for dissipating heat from the battery cell 10 is as follows: the heat exchange medium output by the heat exchange medium source enters the medium flow channel 312 through the inlet of the heat exchange assembly 30. After the heat exchange medium absorbs the heat generated during the operation of the battery cell 10, the heat exchange medium flows out through the outlet of the heat exchange assembly 30, releasing the heat and completing the cooling and heat dissipation of the battery cell 10.

[0127] The principle of the heat exchange assembly 30 for heating the battery cell 10 is as follows: the heat exchange medium output by the heat exchange medium source enters the medium flow channel 312 through the inlet of the heat exchange assembly 30. The heat exchange medium transfers the heat to the battery cell 10 to realize heating of the battery cell 10. After that, the heat exchange medium flows out through the outlet of the heat exchange assembly 30, completing the heating of the battery cell 10.

[0128] The flexible member 31 is arranged as a flexible structure. The flexible member 31 has certain characteristics of being expandable or contractible. It can also be understood that the flexible member 31 can be a structure with elastic deformation. The flexible member 31 has the ability of deformation and recovery of deformation, so that the heat exchange assembly 30 can be formed into a contoured structure. The heat exchange assembly 30 can better adapt to the external contour shape of the battery cell 10 or other components, so as to improve the fitting degree between the heat exchange assembly 30 and the box body 20 and / or the battery cell 10, thereby increasing the effective heat exchange area between the heat exchange assembly 30 and the box body 20 and / or the battery cell 10, and further improving the heat exchange efficiency.

[0129] It should be noted that the flexible member 31 can have electrical conductivity. In this way, it is beneficial to maintain an equipotential setting with the box body 20; the flexible member 31 can also have electrical insulation characteristics, eliminating the need for insulation treatment, which is beneficial to reducing the leakage risk and production cost of the battery device 100, thereby improving the reliability of the battery device 100.

[0130] It should be noted that the specific installation position of the heat exchange assembly 30 is not limited herein.

[0131] Exemplarily, in some embodiments, please refer to Figure 2 , the box body 20 and the heat exchange assembly 30 enclose a receiving cavity 23, and the battery cell 10 is disposed in the receiving cavity 23.

[0132] That is to say, the heat exchange assembly 30 forms the cavity wall of the receiving cavity 23. In this way, it is beneficial to reduce the material used for the box body 20, and further beneficial to reducing the weight of the battery device 100 and the cost of the battery device 100. In addition, the heat exchange assembly 30 can be in direct contact with the battery cell 10, further improving the heat exchange efficiency between the heat exchange assembly 30 and the battery cell 10.

[0133] Exemplarily, the heat exchange assembly 30 forms the bottom wall of the receiving cavity 23, and the battery cell 10 is carried on the heat exchange assembly 30.

[0134] Here, the flexible member 31 is disposed on the side of the rigid member 32 away from the battery cell 10.

[0135] Exemplarily, the rigid member 32 is connected to the box body 20 by welding or screwing or other means.

[0136] In other embodiments, the heat exchange assembly 30 can be disposed inside the box body 20, that is, it can be in direct contact with the battery cell 10. It can also be disposed outside the box body 20, that is, the box body 20 is provided with a receiving cavity 23, and the heat exchange assembly 30 is disposed outside the receiving cavity 23, and heat is transferred through an intermediate medium, thereby realizing the heat exchange between the heat exchange assembly 30 and the battery cell 10.

[0137] That is, at least part of the heat exchange assembly 30 is disposed outside the box body 20 to separate the heat exchange assembly 30 from the battery cell 10.

[0138] The box body 20 is used to accommodate the battery cell 10, and the box body 20 can have various structures. In some embodiments, please continue to refer to Figure 2 , the box body 20 includes a box body 21, and the box body 21 can include a first box body part 211 and a second box body part 212. The first box body part 211 and the second box body part 212 are covered with each other, and the first box body part 211, the second box body part 212 and the heat exchange assembly 30 jointly define a receiving space for accommodating the battery cell 10.

[0139] Exemplarily, the second box body portion 212 can be a frame structure with openings at both ends, the first box body portion 211 is a plate-like structure, the first box body portion 211 covers the opening at one end of the second box body portion 212, and the heat exchange component 30 is arranged at the opening at the other end of the second box body portion 212 to form a accommodating cavity 23.

[0140] The first box body 211 and the second box body 212 can also be hollow structures with one side open, and the open side of the first box body 211 covers the open side of the second box body 212 to form a box body 21 with a storage space. Of course, the first box body 211 and the second box body 212 can be in various shapes, such as a cylinder, a cuboid, etc.

[0141] In order to improve the sealing performance after the first box body 211 and the second box body 212 are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body 211 and the second box body 212 .

[0142] Assuming that the first box body portion 211 covers the top of the second box body portion 212 , the first box body portion 211 can also be referred to as an upper box cover, and the second box body portion 212 can also be referred to as a lower box cover.

[0143] For example, please refer to Figure 2 The battery device 100 further includes a bottom guard plate 22 , which is disposed on a side of the heat exchange assembly 30 that is away from the battery cell 10 .

[0144] Here, by arranging the bottom guard plate 22 on the side of the heat exchange assembly 30 away from the battery cell 10 , it can be used to protect the heat exchange assembly 30 and the box body 20 , reduce the impact of foreign objects on the box body 20 during driving, and improve the reliability of the battery device 100 .

[0145] In some embodiments, see Figures 5 to 6 The flexible member 31 and the rigid member 32 are hot pressed to form a hot pressing area 311 and a medium flow channel 312 , and the flexible member 31 and the rigid member 32 are connected to each other in at least a part of the hot pressing area 311 .

[0146] That is, the flexible member 31 and the rigid member 32 are connected by hot pressing, and the hot pressing area 311 and the medium flow channel 312 are formed by hot pressing. The flow channel area is used to conduct the medium flow channel 312. This molding method is simple.

[0147] Here, the flexible member 31 is sealed by a hot pressing process, and the hot pressing process can effectively ensure that the heat exchange component 30 has good sealing performance and is not prone to cracking.

[0148] In this embodiment, the flexible member 31 is sealed by a hot pressing process, that is, a hot pressing area 311 is formed by hot pressing. The hot pressing area 311 divides the heat exchange component 30 to form at least one medium flow channel 312. This forming method is simple.

[0149] Exemplarily, the hot pressing area 311 includes a heat sealing area and a non - heat sealing area. The non - heat sealing area and the medium flow channel 312 are respectively located on both sides of the heat sealing area, which is beneficial to reducing the width of the heat sealing area and improving the problem of excessive temperature caused by too wide a heat sealing area, affecting the hot pressing quality and damaging the flexible member 31. In addition, the non - heat sealing area can also form a buffer area for stress release when the flexible member 31 is folded, improving the situation where stress concentration occurs in the heat sealing area and causing damage to the heat sealing area.

[0150] In the related art, the heat exchange component is formed by welding high - strength aluminum alloy. Since high - strength aluminum alloy (such as 5 - series, 6 - series, etc.) has a relatively high alloy content, alloy elements will precipitate during welding, affecting the welding quality.

[0151] In the embodiment of the present application, by setting the heat exchange component 30 to include a flexible member 31 and a rigid member 32, the flexible member 31 and the rigid member 32 are hot - pressed to form a hot pressing area 311 and a medium flow channel 312. The hot pressing temperature (150°C ± 10°C) is lower than the brazing temperature in the related art, and alloy elements will not precipitate, which is beneficial to further improving the structural strength of the heat exchange component 30.

[0152] The battery device 100 provided in the embodiment of the present application includes a box 20, a heat exchange assembly 30 and a plurality of battery cells 10. The plurality of battery cells 10 are arranged in the box 20, and the box 20 protects the battery cell 10 assembly. The heat exchange assembly 30 is used to exchange heat with the battery cell 10 assembly. On the one hand, by setting at least one heat exchange component as a flexible component 31, the weight of the flexible component 31 is relatively light, which is conducive to reducing the weight of the heat exchange assembly 30, thereby helping to reduce the weight of the battery device 100. On the other hand, by setting at least one heat exchange component as a rigid component 32, the flexible component 31 and the rigid component 32 are stacked to form at least one medium flow channel 312, and the rigid component 32 can support the flexible component 31, which is conducive to improving the overall structural strength and stability of the heat exchange assembly 30, and further improving the heat exchange efficiency and heat exchange effect of the heat exchange assembly 30; in addition, by setting the rigid component 32, the heat exchange assembly 30 has sufficient structural strength to carry the battery cell 10, thereby improving the applicability of the heat exchange assembly 30. By arranging the flexible part 31 on the side of the rigid part 32 away from the battery cell 10, that is, the flexible part 31 is not in direct contact with the battery cell 10, it is possible to avoid the battery cell 10 from squeezing the flexible part 31 due to thermal expansion, or to avoid the battery cell 10 squeezing the flexible part 31 under the action of gravity. To a certain extent, it is possible to avoid the battery cell 10 from crushing the medium flow channel 312, thereby improving the reliability of the heat exchange assembly 30.

[0153] In some embodiments, see Figure 6 The flexible member 31 includes a reinforcing portion 316 and a flexible portion 317 , and an elastic modulus of the flexible portion 317 is smaller than an elastic modulus of the reinforcing portion 316 .

[0154] Exemplarily, the reinforcing portion 316 is located at the dotted frame of the flexible member 31 . Of course, in different embodiments, the reinforcing portion 316 may be formed at different positions of the flexible member 31 according to requirements.

[0155] The elastic modulus of the flexible portion 317 is smaller than that of the reinforcing portion 316, that is, the flexible member 31 includes regions with different elastic moduli. Thus, according to requirements, a part of the region of the flexible member 31 can be set as the reinforcing portion 316 so that the elastic modulus of the region is greater than that of the flexible portion 317, thereby making the flexible member 31 have a flexible function and reducing the weight of the flexible member 31, while also facilitating improving the overall structural strength and stability of the flexible member 31.

[0156] Here, the elastic modulus of the reinforcing portion 316 may be equal to the elastic modulus of the rigid member 32 , may be smaller than the elastic modulus of the rigid member 32 , or may be larger than the elastic modulus of the rigid member 32 .

[0157] Exemplarily, the number of the reinforcing portions 316 can be one or more.

[0158] Exemplarily, the number of the flexible portions 317 can be one or more.

[0159] Exemplarily, when the number of the reinforcing portions 316 is multiple, the multiple reinforcing portions 316 are arranged at intervals and / or staggeredly, and the flexible portions 317 are arranged between adjacent reinforcing portions 316, so that the overall structural strength of the flexible member 31 can be improved.

[0160] Exemplarily, at least part of the reinforcing portions 316 extend along the length direction of the box body 20.

[0161] Exemplarily, at least part of the reinforcing portions 316 extend along the width direction of the box body 20.

[0162] Exemplarily, a part of the reinforcing portions 316 extend along the length direction of the box body 20, and the reinforcing portions 316 extending along the length direction of the box body 20 are arranged at intervals along the width direction of the box body 20, and the other part of the reinforcing portions 316 extend along the width direction of the box body 20.

[0163] In some embodiments, please refer to Figure 6 , at least part of the reinforcing portions 316 are arranged at the edge of the flexible member 31.

[0164] In this way, the overall structural strength and stability of the flexible member 31 can be further improved.

[0165] Exemplarily, the reinforcing portion 316 arranged at the edge of the flexible member 31 can be connected to the rigid member 32.

[0166] In some embodiments, please refer to Figure 6 , at least part of the medium flow channels 312 are formed in the flexible portions 317.

[0167] That is to say, it can be that part of the medium flow channels 312 are formed in the flexible portions 317, part of the medium flow channels 312 are also formed in the reinforcing portions 316, or the medium flow channels 312 are all formed in the flexible portions 317.

[0168] Here, by forming at least part of the medium flow channels 312 in the flexible portions 317, the flexible function of the flexible portions 317 can make the heat exchange surface of the heat exchange assembly 30 contact the battery cell 10 better, providing better heat exchange capacity.

[0169] It can be understood that there are various ways in which the elastic modulus of the flexible portion 317 is less than that of the reinforcing portion 316.

[0170] In some embodiments, the thickness of the flexible portion 317 is less than the thickness of the reinforcing portion 316.

[0171] That is to say, the flexible member 31 can be thinned at the flexible portion 317 so that the thickness of the flexible portion 317 is less than that of the reinforcing portion 316, thereby making the elastic modulus of the flexible portion 317 less than that of the reinforcing portion 316. This manufacturing method is simple.

[0172] Exemplarily, the flexible member 31 has a layered structure. By setting the number of layers of the flexible member 31 at the flexible portion 317 to be less than the number of layers of the flexible member 31 at the reinforcing portion 316, the thickness of the flexible portion 317 is made less than that of the reinforcing portion 316.

[0173] In some embodiments, the material of the flexible portion 317 is different from that of the reinforcing portion 316.

[0174] That is to say, by setting the material of the flexible portion 317 to be different from that of the reinforcing portion 316, the elastic modulus of the flexible portion 317 is made less than that of the reinforcing portion 316.

[0175] In some embodiments, please refer to Figures 3 to 5 , the heat exchange assembly 30 includes a first anti-corrosion layer 313, and the rigid member 32 is provided with the first anti-corrosion layer 313 at least in the region forming the medium flow channel 312.

[0176] That is to say, the rigid member 32 is provided with the first anti-corrosion layer 313 at least in the region in contact with the heat exchange medium. The first anti-corrosion layer 313 serves to separate the heat exchange medium from the rigid member 32, thereby improving the situation where the heat exchange medium damages the rigid member 32, that is, reducing the situation of corrosion and leakage of the heat exchange medium.

[0177] Here, the first anti-corrosion layer 313 is, for example, a heat exchange medium-resistant layer. For example, in an embodiment where the heat exchange medium is water, the first anti-corrosion layer 313 can be a waterproof layer.

[0178] The rigid member 32 can be provided with the first anti-corrosion layer 313 only in the region forming the medium flow channel 312, or the rigid member 32 can also be covered with the first anti-corrosion layer 313 on the side facing the flexible member 31.

[0179] In this embodiment, by providing the first anti-corrosion layer 313 at least in the region of the rigid member 32 forming the medium flow channel 312, the first anti-corrosion layer 313 can improve the situation where the heat exchange medium damages the rigid member 32, which is beneficial to improving the reliability of the heat exchange assembly 30.

[0180] In some embodiments, the first anti-corrosion layer 313 is set as a metalized film.

[0181] The first anti-corrosion layer 313 is a single-layer or multi-layer film.

[0182] Here, the metal-plastic film is a metal-plastic composite material, that is, it includes a metal layer and a plastic layer.

[0183] In this embodiment, since the metal-plastic film is thin in thickness and small in weight, and a medium flow channel 312 is formed between the metal-plastic film and the flexible member 31, it is not affected by the extrusion process and does not have to meet large thickness requirements. Therefore, the overall thickness and weight of the heat exchange component 30 can be reduced. At the same time, since the heat exchange component 30 has the characteristic of insulation, the possibility of insulation failure can be reduced. The possibility of reaction between the rigid member 32 and the heat exchange medium flowing inside is reduced, and the possibility of corrosion and leakage of the heat exchange medium is further reduced.

[0184] In some embodiments, the first anti-corrosion layer 313 is provided as an aluminum-plastic film.

[0185] The aluminum-plastic film has high barrier properties, good cold stamping formability, puncture resistance, electrolyte resistance stability, and electrical insulation.

[0186] Exemplarily, the first anti-corrosion layer 313 includes one or more of polypropylene, polyphenylene sulfide, polyphthalamide, and polyethylene.

[0187] Here, polypropylene (PP), polyphenylene sulfide (PPS), polyphthalamide (PPA), or polyethylene (PE) has good corrosion resistance, which is beneficial to reducing the possibility of corrosion and leakage of the heat exchange medium.

[0188] Exemplarily, the first anti-corrosion layer 313 is a layered structure, and at least one layer of the first anti-corrosion layer 313 close to the medium flow channel 312 includes one or more of polypropylene, polyphenylene sulfide, polyphthalamide, and polyethylene.

[0189] Exemplarily, the first anti-corrosion layer 313 is an anti-corrosion coating, and the anti-corrosion coating includes one or two of epoxy resin and polyester resin.

[0190] In some embodiments, please refer to Figure 4 , the heat exchange component 30 includes a second anti-corrosion layer 315.

[0191] Here, the second anti-corrosion layer 315 is disposed on the outer side of the heat exchange component 30 to reduce the corrosion of the heat exchange component 30 by external corrosive substances.

[0192] Exemplarily, the second anti-corrosion layer 315 has good acid and alkali corrosion resistance.

[0193] Exemplarily, the second anti-corrosion layer 315 is disposed on the side of the rigid member 32 facing away from the flexible member 31.

[0194] That is to say, on the side of the rigid member 32 away from the medium flow channel 312, i.e., the outer side of the rigid member 32, a second anti-corrosion layer 315 is provided. The second anti-corrosion layer 315 can reduce the corrosion of the rigid member 32 by external corrosive substances, thereby improving the reliability of the heat exchange assembly 30.

[0195] Exemplarily, a second anti-corrosion layer 315 is provided on the side of the flexible member 31 away from the rigid member 32.

[0196] That is to say, on the side of the flexible member 31 away from the medium flow channel 312, i.e., the outer side of the flexible member 31, a second anti-corrosion layer 315 is provided. The second anti-corrosion layer 315 can reduce the corrosion of the flexible member 31 by external corrosive substances, thereby improving the reliability of the heat exchange assembly 30.

[0197] In some embodiments, a second anti-corrosion layer 315 is provided on the side of the heat exchange assembly 30. That is to say, the second anti-corrosion layer 315 covers the side of the heat exchange assembly 30.

[0198] In this way, on the one hand, the second anti-corrosion layer 315 can reduce the corrosion of the side of the flexible member 31 and the rigid member 32 by external corrosive substances. On the other hand, it can also reduce the penetration of external corrosive substances into the gap between the flexible member 31 and the rigid member 32 from the connection between the flexible member 31 and the rigid member 32, further improving the reliability of the heat exchange assembly 30.

[0199] In some embodiments, please refer to Figures 3 to 5 , one of the flexible member 31 and the rigid member 32 forms a flanging portion, and the flanging portion at least covers the side of the other.

[0200] Exemplarily, the flexible member 31 forms a flanging portion, and the flanging portion at least covers the side of the rigid member 32.

[0201] The flanging portion at least covering the side of the rigid member 32 means that the flanging portion can only cover the side of the rigid member 32, or it can also cover a part of the side wall of the rigid member 32 away from the flexible member 31.

[0202] Exemplarily, the rigid member 32 forms a flanging portion, and the flanging portion at least covers the side of the flexible member 31.

[0203] The flanging portion at least covering the side of the flexible member 31 means that the flanging portion can only cover the side of the flexible member 31, or it can also cover a part of the side wall of the flexible member 31 away from the rigid member 32.

[0204] In this embodiment, by forming a flanging portion and at least covering the side of the other one through the flanging portion, it is further beneficial to reduce the penetration of external corrosive substances into the gap between the flexible member 31 and the rigid member 32 from the connection between the flexible member 31 and the rigid member 32, thereby further improving the reliability of the heat exchange assembly 30.

[0205] In some embodiments, the second anti-corrosion layer 315 includes nylon.

[0206] Here, the second anti-corrosion layer 315 can be a nylon layer formed of nylon material, so as to have certain corrosion resistance, such as acid and alkali corrosion resistance.

[0207] In some embodiments, the flexible member 31 is provided as a metalized film.

[0208] The flexible member 31 is a single-layer or multi-layer film.

[0209] Here, the metalized film is a metal-plastic composite material, that is, it includes a metal layer and a plastic layer.

[0210] In this embodiment, since the metalized film has a thin thickness and small weight, and by forming a medium flow channel 312 between the metalized film and the heat exchange member, it is not affected by the extrusion process and does not need to meet large thickness requirements, so the overall thickness and weight of the heat exchange assembly 30 can be reduced. At the same time, since the heat exchange assembly 30 has the characteristic of insulation, the possibility of insulation failure can be reduced. The risk of reaction between the heat exchange assembly 30 and the heat exchange medium flowing inside is reduced, and the possibility of corrosion leakage of the heat exchange medium is further reduced.

[0211] Exemplarily, the flexible member 31 is provided as an aluminum-plastic film.

[0212] The aluminum-plastic film has high barrier properties, good cold stamping formability, puncture resistance, electrolyte resistance stability, and electrical insulation.

[0213] In some embodiments, the flexible member 31 is a layered structure, and the flexible member 31 includes a metal layer and a non-metal layer, and the metal layer and the non-metal layer are sequentially stacked.

[0214] Here, the flexible member 31 includes a metal layer and a non-metal layer, that is, a composite material member composed of a metal layer and a non-metal layer.

[0215] Exemplarily, the metal layer and the non-metal layer can be formed by hot pressing or hot melting.

[0216] Here, the numbers of the metal layer and the non-metal layer are not limited.

[0217] In this embodiment, the flexible member 31 formed by laminating a metal layer and a non-metal layer in sequence has a thin thickness and a small weight. Moreover, by forming a dielectric flow channel 312 between the flexible member 31 and the rigid member 32, it is not affected by the extrusion process and does not need to meet large thickness requirements, so the overall thickness and weight of the heat exchange assembly 30 can be reduced. In addition, the heat exchange assembly 30 will not react with the heat exchange medium flowing inside, so there is no possibility of corrosion and leakage.

[0218] In some embodiments, the flexible member 31 has a layered structure. The flexible member 31 includes a metal layer and a non-metal layer, and the metal layer and the non-metal layer are laminated in sequence. Among them, the non-metal layer is disposed on one side of the metal layer facing the rigid member 32.

[0219] That is to say, the non-metal layer is located between the metal layer and the rigid member 32.

[0220] Here, by disposing the non-metal layer on one side of the metal layer facing the rigid member 32, the non-metal layer can be hot-pressed and connected to the rigid member 32.

[0221] In some embodiments, the metal layer includes one or more of aluminum foil, copper foil, and steel foil.

[0222] By setting the metal layer as one or more of aluminum foil, copper foil, and steel foil, the flexible member 31 can have a certain structural strength and can play an isolation role.

[0223] In some embodiments, the non-metal layer includes one or more of polypropylene, polyphenylene sulfide, polyphthalamide, and polyethylene.

[0224] By setting the non-metal layer as one or more of polypropylene, polyphenylene sulfide, polyphthalamide, and polyethylene, the flexible member 31 can have a certain waterproof effect.

[0225] Exemplarily, a non-metal layer made of a corrosion-resistant material with acid and alkali corrosion resistance can also be selected, or in other words, additives are added to the non-metal layer to make the non-metal layer have acid and alkali corrosion resistance.

[0226] In some embodiments, the non-metal layer is a hot melt layer.

[0227] Here, by setting the non-metal layer as a hot melt layer, that is, composed of a hot melt material, it is beneficial to make the non-metal layer and the metal layer composite together through hot melting, with simple molding and high production efficiency.

[0228] In some embodiments, please refer to Figures 3 to 4 , the flexible member 31 has a layered structure. The flexible member 31 includes a first anti-corrosion layer 313, an isolation layer 314, and a second anti-corrosion layer 315 arranged in sequence. The first anti-corrosion layer 313 is closer to the dielectric flow channel 312 than the second anti-corrosion layer 315.

[0229] Here, the second anti-corrosion layer 315 can be a nylon layer formed of nylon material, so as to have certain corrosion resistance, for example, acid and alkali corrosion resistance.

[0230] The isolation layer 314 can be a metal layer, and the metal layer can be set to one or more of aluminum foil, copper foil, and steel foil, which can make the flexible member 31 have certain structural strength and can play an isolation role.

[0231] The first anti-corrosion layer 313 can be a non-metal layer, and the non-metal layer can be set to one or more of polypropylene, polyphenylene sulfide, polyphthalamide, and polyethylene, which can make the flexible member 31 have certain waterproof function.

[0232] In this embodiment, by setting the flexible member 31 to include a first anti-corrosion layer 313, an isolation layer 314, and a second anti-corrosion layer 315 arranged in sequence, and the second anti-corrosion layer 315 is closer to the medium flow channel 312 than the first anti-corrosion layer 313, it is beneficial to improve the reliability of the heat exchange assembly 30.

[0233] In some embodiments, the thickness of the isolation layer 314 is 6.5 μm - 100 μm.

[0234] The thickness of the isolation layer 314 can be any point value among 6.5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 38 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm, 80 μm, 85 μm, 90 μm, 92 μm, 95 μm, 100 μm or any point value between any two of them.

[0235] In this embodiment, by setting the thickness of the isolation layer 314 to 6.5 μm - 100 μm, the flexible member 31 can have certain structural strength and flexibility.

[0236] In some embodiments, the thickness of the isolation layer 314 is 6.5 μm - 15 μm.

[0237] The thickness of the isolation layer 314 can be any point value among 6.5 μm, 7 μm, 7.5 μm, 7.8 μm, 8 μm, 8.3 μm, 8.5 μm, 8.8 μm, 9 μm, 9.2 μm, 9.5 μm, 9.7 μm, 10 μm, 10.3 μm, 10.5 μm, 10.8 μm, 11 μm, 11.5 μm, 11.8 μm, 12 μm, 12.3 μm, 12.5 μm, 13 μm, 13.5 μm, 14 μm, 14.5 μm, 15 μm or any point value between any two of them.

[0238] In this embodiment, by setting the thickness of the isolation layer 314 to 6.5 μm - 15 μm, the flexible member 31 can further have a certain structural strength and flexibility.

[0239] In some embodiments, the thickness of the second anti-corrosion layer 315 is 5 μm - 20 μm.

[0240] The thickness of the second anti-corrosion layer 315 can be any point value among 5 μm, 5.5 μm, 5.8 μm, 6 μm, 6.5 μm, 7 μm, 7.5 μm, 7.8 μm, 8 μm, 8.3 μm, 8.5 μm, 8.8 μm, 9 μm, 9.2 μm, 9.5 μm, 9.7 μm, 10 μm, 10.3 μm, 10.5 μm, 10.8 μm, 11 μm, 11.5 μm, 11.8 μm, 12 μm, 12.3 μm, 12.5 μm, 13 μm, 13.5 μm, 14 μm, 14.5 μm, 15 μm, 15.5 μm, 16 μm, 16.5 μm, 17 μm, 17.5 μm, 18 μm, 18.5 μm, 18.7 μm, 19 μm, 19.5 μm, 20 μm or any point value between any two of them.

[0241] In this embodiment, by setting the thickness of the second anti-corrosion layer 315 to 5 μm - 20 μm, the wear resistance and toughness of the flexible member 31 can be improved.

[0242] In some embodiments, the thickness of the first anti-corrosion layer 313 is 50 μm - 120 μm.

[0243] The thickness of the first anti-corrosion layer 313 can be any point value among 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm, 80 μm, 85 μm, 90 μm, 92 μm, 95 μm, 100 μm, 105 μm, 108 μm, 110 μm, 115 μm, 120 μm or any point value between any two of them.

[0244] In this embodiment, by setting the thickness of the first anti-corrosion layer 313 to 50 μm - 120 μm, the first anti-corrosion layer 313 can have a certain structural strength, improve the waterproof performance, and also facilitate the thermal pressing connection of the flexible member 31 through the first anti-corrosion layer 313.

[0245] In some embodiments, please refer to Figures 2 to 4 , the thickness of the flexible member 31 is 0.05 mm - 0.3 mm.

[0246] A point value that is any one of 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.21 mm, 0.22 mm, 0.25 mm, 0.27 mm, 0.28 mm, 0.3 mm or a point value between any two of them.

[0247] In this embodiment, by setting the thickness of the flexible member 31 to be 0.05 mm - 0.3 mm, while the heat exchange assembly 30 made of the flexible member 31 has a certain structural strength, the overall thickness of the heat exchange assembly 30 is relatively small, which is beneficial to reducing the overall volume and weight of the battery device 100, so as to increase the energy density of the battery device 100.

[0248] In some embodiments, please refer to Figures 2 to 4 , the thickness of the flexible member 31 is 0.08 mm - 0.2 mm.

[0249] A point value that is any one of 0.08 mm, 0.09 mm, 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.2 mm or a point value between any two of them.

[0250] In this embodiment, by setting the thickness of the flexible member 31 to be 0.08 mm - 0.2 mm, while the heat exchange assembly 30 made of the flexible member 31 has a certain structural strength, further, the overall thickness of the heat exchange assembly 30 is relatively small, which is beneficial to further reducing the overall volume and weight of the battery device 100, so as to further increase the energy density of the battery device 100.

[0251] In some embodiments, the elastic modulus of the flexible member 31 is 0.1 MPa - 10000 MPa.

[0252] Exemplarily, the elastic modulus of the flexible member 31 can be a point value that is any one of 0.1 MPa, 1 MPa, 50 MPa, 100 MPa, 150 MPa, 200 MPa, 300 MPa, 500 MPa, 800 MPa, 1000 MPa, 1300 MPa, 1500 MPa, 1800 MPa, 2000 MPa, 2500 MPa, 2800 MPa, 3000 MPa, 3500 MPa, 4000 MPa, 4500 MPa, 5000 MPa, 5500 MPa, 6000 MPa, 6500 MPa, 7000 MPa, 7500 MPa, 8000 MPa, 8500 MPa, 8800 MPa, 9000 MPa, 9500 MPa, 9700 MPa, 10000 MPa or a point value between any two of them.

[0253] The elastic modulus describes the magnitude of the unit strain caused by unit stress when a solid is stressed within a certain range, and it is one of the basic physical quantities of materials. The larger the elastic modulus, the greater the stiffness of the material and the stronger the compressive capacity. The elastic modulus is a physical quantity that describes the elasticity of a substance.

[0254] In this embodiment, by setting the elastic modulus of the flexible member 31 to 0.1 MPa - 10,000 MPa, the flexible member 31 not only has a certain structural strength, improving the reliability of the heat exchange assembly 30, but also has a certain deformation ability, which can enhance the fit degree of the heat exchange assembly 30 with the box body 20 and / or the battery cell 10, thereby increasing the effective heat exchange area between the heat exchange assembly 30 and the box body 20 and / or the battery cell 10, and thus improving the heat exchange efficiency and heat exchange effect of the heat exchange assembly 30.

[0255] It should be noted that the specific material of the rigid member 32 is not limited herein.

[0256] In some embodiments, the rigid member 32 is set as a metal plate.

[0257] Exemplarily, for example, it can be an aluminum alloy.

[0258] In this embodiment, by setting the rigid member 32 as a metal plate, the metal plate not only has good structural strength but also has good heat conduction performance. That is to say, while meeting a certain heat exchange efficiency of the heat exchange assembly 30, the rigid member 32 can also play a certain supporting role for the flexible member 31.

[0259] In some embodiments, please refer to Figure 2 and Figure 6 , the medium flow channel 312 includes a plurality of sub - flow channels. Each battery cell 10 corresponds to a plurality of sub - flow channels, and the extending direction of the sub - flow channels corresponding to the battery cell 10 is perpendicular to the length direction of the battery cell 10.

[0260] The plurality of sub - flow channels are connected to form the medium flow channel 312.

[0261] The extending direction of the sub - flow channels is perpendicular to the length direction of the battery cell 10. That is to say, the plurality of sub - flow channels are arranged along the length direction of the battery cell 10. In this way, the length direction of the battery cell 10 corresponds to a plurality of sub - flow channels.

[0262] It can be understood that along the flow direction of the heat exchange medium, the temperature of the heat exchange medium will gradually increase. Therefore, by making each battery cell 10 correspond to a plurality of sub - flow channels, it is beneficial to improve the temperature uniformity of the battery cell 10.

[0263] In a specific embodiment, please refer to Figures 2 to 6, the battery includes a box body 20, a heat exchange component 30, and a plurality of battery cells 10. The plurality of battery cells 10 are arranged in the box body 20. The heat exchange component 30 includes at least two heat exchange elements, at least one heat exchange element is arranged as a flexible element 31, and at least one heat exchange element is arranged as a rigid element 32. The elastic modulus of at least a partial region of the flexible element 31 is less than that of the rigid element 32. The flexible element 31 and the rigid element 32 are stacked to form at least one medium flow channel 312. At least one medium flow channel 312 is used to conduct a heat exchange medium, and the heat exchange medium is used to exchange heat with the plurality of battery cells 10. The flexible element 31 and the rigid element 32 are hot-pressed to form a hot-pressed region 311 and a medium flow channel 312, and the flexible element 31 and the rigid element 32 are connected to each other in at least a partial region of the hot-pressed region 311.

[0264] In a specific embodiment, please refer to Figures 3 to 4 , the flexible element 31 is a layered structure. The flexible element 31 includes a first anti-corrosion layer 313, an isolation layer 314, and a second anti-corrosion layer 315 arranged in sequence. The first anti-corrosion layer 313 is closer to the medium flow channel 312 than the second anti-corrosion layer 315. The thickness of the isolation layer 314 is 6.5 μm - 15 μm. The thickness of the first anti-corrosion layer 313 is 5 μm - 20 μm. The thickness of the second anti-corrosion layer 315 is 50 μm - 120 μm. The thickness of the flexible element 31 is 0.05 mm - 0.3 mm. The elastic modulus of the flexible element 31 is 0.1 MPa - 10000 MPa.

[0265] The measurement method of the elastic modulus of the flexible element 31 may include at least one of a static tensile test method, a dynamic test method, a sound velocity method, a nanoindentation method, and a bending method. The measuring instrument may include a nanoindenter and a universal testing machine.

[0266] Exemplarily, at normal temperature and pressure, the elastic modulus of the flexible element 31 can be measured by the nanoindentation method. The nanoindentation method uses a micro indenter to indent the surface of the flexible element 31, and calculates the elastic modulus by analyzing the relationship between the indentation depth and the load.

[0267] In the description of the present disclosure, the description referring to terms such as "in an embodiment", "in some embodiments", "in other embodiments", "in still other embodiments", or "exemplary", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present disclosure. In the present disclosure, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine different embodiments or examples described in the present disclosure and the features of different embodiments or examples.

[0268] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included within the protection scope of the present application.

Claims

1. A battery device, characterized in that, include: Box; A plurality of battery cells, wherein the plurality of battery cells are arranged in the box; A heat exchange assembly, wherein the heat exchange assembly includes at least two heat exchange parts, at least one of which is configured as a flexible part, and at least one of which is configured as a rigid part, the elastic modulus of at least a portion of the flexible part is smaller than the elastic modulus of the rigid part, the flexible part and the rigid part are stacked to form at least one medium flow channel, the at least one medium flow channel is used to conduct a heat exchange medium, and the heat exchange medium is used to exchange heat with the multiple battery cells; wherein the flexible part is arranged on a side of the rigid part away from the battery cell.

2. The battery device according to claim 1, characterized in that, The flexible member includes a reinforcing portion and a flexible portion, and an elastic modulus of the flexible portion is smaller than an elastic modulus of the reinforcing portion.

3. The battery device according to claim 2, characterized in that, The flexible portion forms at least a portion of the medium flow channel.

4. The battery device according to claim 2, characterized in that, The thickness of the flexible portion is smaller than the thickness of the reinforcing portion.

5. The battery device according to claim 2, wherein The material of the flexible portion is different from the material of the reinforcing portion.

6. The battery device according to any one of claims 2 to 5, characterized in that, At least part of the reinforcement portion is disposed on the edge of the flexible member.

7. The battery device according to any one of claims 1 to 5, characterized in that, The flexible member and the rigid member are hot pressed to form a hot pressing area and the medium flow channel, and the flexible member and the rigid member are connected to each other in at least a part of the hot pressing area.

8. The battery device according to any one of claims 1 to 5, characterized in that The heat exchange component comprises a first anti-corrosion layer, and the first anti-corrosion layer is provided at least in the region of the rigid member forming the medium flow channel.

9. The battery device according to claim 8, characterized in that, The first anti-corrosion layer is configured as a metal plasticized film.

10. The battery device according to claim 9, characterized in that, The first anti-corrosion layer is configured as an aluminum-plastic film.

11. The battery device according to any one of claims 1 to 5, characterized in that, The heat exchange component includes a second anti-corrosion layer; The second anti-corrosion layer is disposed on a side of the rigid member facing away from the flexible member; and / or, The second anti-corrosion layer is disposed on the side of the flexible member facing away from the rigid member; and / or, The second anti-corrosion layer is disposed on the side of the heat exchange component.

12. The battery device according to claim 11, characterized in that, The second anti-corrosion layer includes nylon.

13. The battery device according to any one of claims 1 to 5, characterized in that, The flexible member includes a metal plasticized film.

14. The battery device according to claim 13, wherein, The flexible member comprises an aluminum-plastic film.

15. The battery device according to any one of claims 1 to 5, characterized in that, The flexible member is a layered structure, and includes a metal layer and a non-metal layer, and the metal layer and the non-metal layer are stacked in sequence.

16. The battery device according to claim 15, characterized in that, The metal layer includes one of aluminum foil, copper foil and steel foil; and / or, The non-metal layer includes one of polypropylene, polyphenylene sulfide, polyphthalamide and polyethylene.

17. The battery device according to claim 15, wherein, The non-metallic layer is a hot-melt layer.

18. The battery device according to any one of claims 1 to 5, characterized in that, The flexible member is a layered structure, and includes a first anti-corrosion layer, an isolation layer, and a second anti-corrosion layer which are arranged in sequence. The first anti-corrosion layer is closer to the medium flow channel than the second anti-corrosion layer.

19. The battery device according to any one of claims 1 to 5, characterized in that, The thickness of the flexible member is 0.05mm-0.3mm.

20. The battery device according to claim 19, characterized in that, The thickness of the flexible member is 0.08 mm-0.2 mm.

21. The battery device according to any one of claims 1 to 5, characterized in that, The elastic modulus of the flexible member is 0.1 MPa-10000 MPa.

22. The battery device according to any one of claims 1 to 5, characterized in that, The rigid member is configured as a metal plate.

23. A heat exchange component, characterized in that, The heat exchange component includes at least two heat exchange elements, at least one of the heat exchange elements is set as a flexible element, at least one of the heat exchange elements is set as a rigid element, the elastic modulus of at least a partial area of the flexible element is less than the elastic modulus of the rigid element, the flexible element and the rigid element are stacked to form at least one medium flow channel, the at least one medium flow channel is used for conducting a heat exchange medium, and the heat exchange medium is used for exchanging heat with the battery cell; wherein, the flexible element is arranged on a side of the rigid element away from the battery cell.

24. An electrical device, characterized in that, It includes the battery device according to any one of claims 1 to 22 or the heat exchange component according to claim 23.

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