Heat exchange assembly, battery device, electric equipment and energy storage equipment

Abstract

The embodiment of the utility model provides a heat exchange assembly, a battery device, electric equipment and energy storage equipment. The battery device comprises a box body assembly, a battery monomer assembly and a heat exchange assembly, and the battery monomer assembly is arranged in the box body assembly. And the heat exchange assembly is used for exchanging heat with the battery monomer assembly. The heat exchange assembly comprises a hard connector and at least two flexible parts, the at least two flexible parts are arranged in a stacked mode, a heat exchange flow channel is formed between the flexible parts, and the heat exchange flow channel is used for conducting a heat exchange medium. The hard connector is provided with a connecting channel, the hard connector is connected with the flexible piece, and the connecting channel communicates with the heat exchange runner. According to the battery device provided by the embodiment of the invention, the heat exchange assembly can be communicated with the outside through the hard connector, so that heat exchange with the battery monomer assembly is realized; the energy density of the battery device can be improved, and the fitting degree of the heat exchange assembly and the box body assembly and / or the battery monomer assembly can be improved, so that 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 battery devices, and in particular to a heat exchange component, a battery device, an electrical device, and an energy storage device. Background Art

[0002] This section is intended to provide a background or context for the embodiments of the present application. No description herein is admitted to be prior art by virtue of its inclusion in this section.

[0003] In new energy vehicles equipped with batteries, these batteries can provide all or part of the power. During battery use, the cells within the battery generate heat. Excessive heat can negatively impact battery performance and service life. Therefore, effectively dissipating heat from these cells has become an important research topic in this field. Utility Model Content

[0004] In view of this, the embodiments of the present application hope to provide a heat exchange component, a battery device, an electrical device, and an energy storage device to solve the technical problem of how to improve the heat exchange effect.

[0005] To this end, a first aspect of an embodiment of the present application provides a battery device, including:

[0006] Cabinet assembly;

[0007] A battery cell assembly is disposed in the box assembly;

[0008] a heat exchange assembly, the heat exchange assembly being used to exchange heat with the battery monomer assembly;

[0009] In which, the heat exchange component includes a hard connector and at least two flexible parts, the at least two flexible parts are stacked, and a heat exchange flow channel is formed between the flexible parts, and the heat exchange flow channel is used to conduct the heat exchange medium; the hard connector has a connecting channel, the hard connector is connected to the flexible part, and the connecting channel is connected to the heat exchange flow channel.

[0010] The battery device provided in the embodiment of the present application includes a box assembly, a battery cell assembly and a heat exchange assembly. The battery cell assembly is arranged in the accommodating cavity of the box assembly. The box assembly protects the battery cell assembly. The heat exchange assembly is provided with a hard connector and at least two flexible parts. The hard connector is connected to the flexible parts so that the connecting channel is connected to the heat exchange flow channel. That is to say, it can be connected to the outside through the hard connector so that the heat exchange medium enters the heat exchange flow channel through the connecting channel, thereby realizing heat exchange with the battery cell assembly; in addition, the heat exchange assembly is configured to include a flexible part The flexible part is lighter in weight, which is beneficial to reducing the weight of the battery device, reducing the production cost of the heat exchange component, and improving the energy density of the battery device; in addition, the flexible part is a flexible structure, which can make the heat exchange component fit better with the box component and / or the battery cell component, thereby absorbing the assembly tolerance of the heat exchange component, eliminating the need for fillers or thermal conductive materials, improving the fit between the heat exchange component and the box component and / or the battery cell component, and increasing the effective heat exchange area between the heat exchange component and the box component and / or the battery cell component, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange component.

[0011] In some embodiments, the flexible member is formed with a connection port communicating with the heat exchange channel, and the hard connector is hot-pressedly connected to the inner wall of the flexible member at the edge of the connection port.

[0012] In this embodiment, the hard connector is connected to the inner wall of the flexible part at the edge of the connection port by hot pressing to achieve a sealed connection between the hard connector and the flexible part. The connection structure is simple and reliable, and while the flexible part forms a heat exchange flow channel by hot pressing, the hard connector can be connected to the inner wall of the flexible part at the edge of the connection port by hot pressing, thereby reducing the assembly steps and improving the assembly efficiency.

[0013] In some embodiments, the flexible part is formed with a connection port connected to the heat exchange channel, and the hard connection head includes a connection body and a connection ring, at least a portion of the connection ring is arranged in the heat exchange channel, and the connection ring is connected to the inner wall of the flexible part located at the edge of the connection port.

[0014] In this embodiment, the hard connector is configured to include a connecting body and a connecting ring, and the connecting body and the connecting ring together form a connecting channel. This facilitates the connection of the hard connector to the flexible part through the connecting ring, thereby improving the assembly efficiency of the connection between the hard connector and the flexible part, and can be applied to hard connectors with complex structures.

[0015] In some embodiments, the connecting ring is connected to the inner wall of the flexible member at the edge of the connecting opening by heat pressing.

[0016] In this embodiment, the connecting ring is connected to the inner wall of the flexible part at the edge of the connecting port by hot pressing to achieve a sealed connection between the connecting ring and the flexible part. The connection structure is simple and reliable, and the connecting ring can be connected to the inner wall of the flexible part at the edge of the connecting port by hot pressing while the flexible part forms a heat exchange flow channel by hot pressing, thereby reducing the assembly steps and improving the assembly efficiency.

[0017] In some embodiments, one end of the connecting body extends into the connecting ring and is connected to the connecting ring.

[0018] In this way, the hard connector is connected to the flexible member through the connecting ring, and is connected to the connecting ring through the connecting body, thereby realizing the connection between the hard connector and the flexible member.

[0019] In some embodiments, one end of the connecting body extends into the connecting ring and is welded and / or adhesively connected to the connecting ring.

[0020] In this embodiment, one end of the connecting body extends into the connecting ring and is welded and / or adhesively connected to the connecting ring. This connection method is simple and reliable.

[0021] In some embodiments, a circumferential side wall of the connecting body forms a flange, and the flexible member is sandwiched between the flange and the connecting ring.

[0022] In this embodiment, a flange is formed on the circumferential side wall of the connecting body, and the flexible part is clamped between the flange and the connecting ring. In this way, on the one hand, the flexible part can be clamped between the two by cooperating with the flange and the connecting ring, thereby further improving the connection reliability between the hard connecting head and the flexible part; on the other hand, during the connection process of the connecting body and the connecting ring, the flange can play a positioning role, thereby improving the assembly efficiency.

[0023] In some embodiments, the flange is connected to the flexible member.

[0024] In this embodiment, by connecting the flange to the flexible member, the connection reliability between the hard connector and the flexible member is improved, and the sealing performance between the hard connector and the flexible member can also be improved.

[0025] In some embodiments, the flange is connected to the flexible member by heat pressing and / or adhesive bonding.

[0026] In this embodiment, the flange is connected to the outer wall of the flexible part at the edge of the connection port by hot pressing, which is conducive to the sealing connection between the flange and the flexible part. The connection structure is simple and reliable, and the flange can be connected to the outer wall of the flexible part at the edge of the connection port by hot pressing while the flexible part forms a heat exchange flow channel by hot pressing, thereby reducing the assembly steps and improving the assembly efficiency.

[0027] In this embodiment, the flange is connected to the outer wall of the flexible member at the edge of the connection port by gluing, which is conducive to a sealed connection between the flange and the flexible member. The connection structure is simple and reliable.

[0028] In some embodiments, the difference between the outer diameter of the flange and the outer diameter of the connecting ring is 0.2 mm to 30 mm.

[0029] In this embodiment, by setting the difference between the outer diameter of the flange and the outer diameter of the connecting ring to 0.2mm-30mm, it is beneficial to the connection between the flange and the flexible part, and the space occupied by the hard connector can be reduced as much as possible, that is, the connection reliability between the hard connector and the flexible part and the reduction of the occupied space can be taken into account.

[0030] In some embodiments, the difference between the outer diameter of the flange and the outer diameter of the connecting ring is 2 mm to 5 mm.

[0031] This embodiment is beneficial for further balancing the connection reliability between the hard connector and the flexible member and reducing the occupied space.

[0032] In some embodiments, along the radial direction of the connecting ring, a size of a connecting area between the connecting ring and the flexible member is greater than or equal to 0.2 mm.

[0033] In this embodiment, along the radial direction of the connecting ring, by setting the size of the connecting area between the connecting ring and the flexible member to be greater than or equal to 0.2 mm, it is beneficial to improve the connection reliability between the connecting ring and the flexible member.

[0034] In some embodiments, along the radial direction of the connecting ring, a size of a connecting area between the connecting ring and the flexible member is 1 mm to 30 mm.

[0035] In this embodiment, along the radial direction of the connecting ring, by setting the size of the connection area between the connecting ring and the flexible part to 1mm-30mm, it is beneficial to improve the connection reliability between the connecting ring and the flexible part, and can reduce the space occupied by the connecting ring in the heat exchange flow channel as much as possible, thereby improving the heat exchange efficiency, that is, the connection reliability between the connecting ring and the flexible part and the reduction of the occupied space can be taken into account.

[0036] In some embodiments, one end of the connecting body extends into the connecting ring and is connected to the inner side wall of the connecting ring; the dimension of the connecting body extending into the connecting ring is greater than or equal to 0.2 mm-20 mm.

[0037] In this embodiment, by setting the size of the connecting body extending into the connecting ring to 0.2mm-20mm, it is beneficial to the connection between the connecting body and the connecting ring, and the space occupied by the connecting ring in the heat exchange channel can be reduced as much as possible, thereby improving the heat exchange efficiency, that is, the connection reliability between the connecting body and the connecting ring and the reduction of the occupied space can be taken into account.

[0038] In some embodiments, a portion of the inner side wall of the connecting ring extends radially inward to form a step, and an end portion of the connecting body abuts against the step.

[0039] In this embodiment, a step is formed in the connecting ring, and the end of the connecting body abuts against the step. In this way, on the one hand, the end of the connecting body can be connected to the step, thereby further improving the connection reliability between the connecting body and the connecting ring; on the other hand, during the connection between the connecting body and the connecting ring, the step can play a positioning role, thereby improving assembly efficiency.

[0040] In some embodiments, along the radial direction of the connecting ring, the size of the step is 0.2 mm-10 mm.

[0041] In this embodiment, by setting the size of the step to 0.2mm-10mm along the radial direction of the connecting ring, it is beneficial to the connection between the connecting body and the connecting ring, as well as the structural strength of the step, and can minimize the space occupied by the step in the heat exchange channel, thereby improving the heat exchange efficiency, that is, it can take into account the connection reliability between the connecting body and the connecting ring and reduce the occupied space.

[0042] In some embodiments, along the radial direction of the connecting ring, the size of the step is 0.5 mm-3 mm.

[0043] This is beneficial for further taking into account the connection reliability between the connecting body and the connecting ring and reducing the occupied space.

[0044] In some embodiments, along a direction perpendicular to the radial direction of the connecting ring, the size of the step is 0.2 mm-10 mm.

[0045] This is beneficial for giving the step a certain structural strength while also minimizing the space occupied by the step in the heat exchange channel, thereby improving the heat exchange efficiency, that is, taking into account both the structural strength of the step and the reduction of the occupied space.

[0046] In some embodiments, along a direction perpendicular to the radial direction of the connecting ring, the size of the step is 1 mm-3 mm.

[0047] This is beneficial for further taking into account the structural strength of the steps and reducing the occupied space.

[0048] In some embodiments, the end of the connecting body is connected to the step by welding and / or gluing.

[0049] In this embodiment, one end of the connecting body extends into the connecting ring and is welded to the connecting ring. This connection method is simple and reliable.

[0050] Of course, in other embodiments, the connecting body and the connecting ring may also be connected by adhesive bonding.

[0051] In some embodiments, the connecting body includes a first connecting segment and a second connecting segment, the extension direction of the first connecting segment is perpendicular to the radial direction of the connecting ring, the extension direction of the second connecting segment is perpendicular to the extension direction of the first connecting segment, and the first connecting segment is connected to the connecting ring.

[0052] In this embodiment, the hard connector can be configured to include a connecting body and a connecting ring, and the connecting body and the connecting ring together form a connecting channel. This is beneficial for connecting the hard connector to the flexible part through the connecting ring, and connecting to the connecting ring through the connecting body, thereby realizing the connection between the hard connector and the flexible part, improving the assembly efficiency of the connection between the hard connector and the flexible part, and can be applicable to hard connectors with complex structures.

[0053] In some embodiments, a circumferential side wall of the rigid connector forms a flange, and the flange is connected to an outer wall of the flexible member located at an edge of the connection port.

[0054] In this embodiment, by forming a flange on the circumferential side wall of the hard connector, the flange can play a positioning role during the connection between the hard connector and the flexible part, thereby improving assembly efficiency; and by connecting the flange to the outer wall of the flexible part at the edge of the connection port, it is beneficial to improve the connection reliability between the hard connector and the flexible part.

[0055] In some embodiments, the at least two flexible members are configured as metal plasticized films.

[0056] In this embodiment, the thin and lightweight metal-plasticized films, combined with the flow channel region formed between at least two metal-plasticized films, are unaffected by the extrusion process and eliminate the need for high thickness requirements. This reduces the overall thickness and weight of the heat exchange assembly. Furthermore, the heat exchange assembly does not react with the heat exchange medium flowing within it, eliminating the risk of corrosion or leakage.

[0057] In some embodiments, the at least two flexible members are configured as aluminum-plastic films.

[0058] Aluminum-plastic film has high barrier properties, good cold stamping formability, puncture resistance, electrolyte stability, and electrical insulation.

[0059] In some embodiments, the flexible member is a layered structure, and 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.

[0060] In this embodiment, the flexible member, composed of a stack of metal and non-metal layers, is thin and lightweight. Furthermore, by forming a flow channel between at least two flexible members, the flow channel is unaffected by the extrusion process and eliminates the need for strict thickness requirements, thereby reducing the overall thickness and weight of the heat exchange assembly. Furthermore, the heat exchange assembly does not react with the heat exchange medium flowing within, eliminating the risk of corrosion or leakage.

[0061] In some embodiments, the metal layer includes one of aluminum foil, copper foil and steel foil.

[0062] The flexible part can have a certain structural strength and can play an isolation role.

[0063] In some embodiments, the non-metallic layer includes one of polypropylene, polyvinyl chloride, and polyethylene.

[0064] The flexible part can be made waterproof to a certain extent.

[0065] In some embodiments, the non-metallic layer is a hot-melt layer.

[0066] Here, by setting the non-metallic layer as a hot-melt layer, that is, composed of a hot-melt material, it is advantageous to combine the non-metallic layer and the metal layer through hot melting, which makes molding simple and the production efficiency high.

[0067] In some embodiments, the flexible member is a layered structure, and the flexible member includes a corrosion-resistant layer, an isolation layer, and a waterproof layer arranged in sequence, and the waterproof layer is closer to the flow channel area than the corrosion-resistant layer.

[0068] In this embodiment, by configuring the flexible member to include a corrosion-resistant layer, an isolation layer, and a waterproof layer arranged in sequence, the waterproof layer is closer to the flow channel area than the corrosion-resistant layer, which is beneficial to improving the reliability of the heat exchange component.

[0069] In some embodiments, the thickness of the isolation layer is 6.5 μm-100 μm.

[0070] In this embodiment, by setting the thickness of the isolation layer to 6.5 μm-100 μm, the flexible member can have a certain structural strength and flexibility.

[0071] In some embodiments, the thickness of the isolation layer is 6.5 μm-15 μm.

[0072] In this embodiment, by setting the thickness of the isolation layer to 6.5 μm-15 μm, the flexible member can further have a certain structural strength and flexibility.

[0073] In some embodiments, the corrosion-resistant layer has a thickness of 5 μm-20 μm.

[0074] In this embodiment, by setting the thickness of the corrosion-resistant layer to 5 μm-20 μm, the wear resistance and toughness of the flexible component can be improved.

[0075] In some embodiments, the waterproof layer has a thickness of 50 μm-120 μm.

[0076] In this embodiment, by setting the thickness of the waterproof layer to 50 μm-120 μm, the waterproof layer can have a certain structural strength, improve the waterproof performance, and facilitate hot pressing connection of the flexible parts through the waterproof layer.

[0077] In some embodiments, the thickness of the flexible member is 0.05 mm-0.3 mm.

[0078] By setting the thickness of the flexible part to 0.05mm-0.3mm, the heat exchange component made of the flexible part has a certain structural strength while the overall thickness of the heat exchange component is smaller, which is beneficial to reducing the overall volume and weight of the battery to increase the energy density of the battery.

[0079] In some embodiments, the thickness of the flexible member is 0.08 mm-0.2 mm.

[0080] By setting the thickness of the flexible part to 0.08mm-0.2mm, the heat exchange component made of the flexible part has a certain structural strength, while the overall thickness of the heat exchange component is further reduced, which is conducive to further reducing the overall volume and weight of the battery, thereby further increasing the energy density of the battery.

[0081] In some embodiments, the elastic modulus of the flexible member is 0.1 MPa-10000 MPa.

[0082] In this embodiment, by setting the elastic modulus of the flexible part to 0.1MPa-10000MPa, the flexible part can have a certain structural strength, thereby improving the reliability of the heat exchange component, and also have a certain deformation ability, which can improve the fit between the heat exchange component and the box component and / or the battery component battery cell component, thereby increasing the effective heat exchange area between the heat exchange component and the box component and / or the battery component battery cell component, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange component.

[0083] A second aspect of the embodiments of the present disclosure provides a heat exchange assembly, which is the heat exchange assembly of the battery device described above, and is used to exchange heat with the battery cell assembly.

[0084] The heat exchange assembly provided by the embodiment of the present disclosure is provided with a hard connector and at least two flexible parts. The hard connector is connected to the flexible parts so that the connecting channel is connected to the heat exchange flow channel. That is, it can be connected to the outside through the hard connector so that the heat exchange medium enters the heat exchange flow channel through the connecting channel, thereby realizing heat exchange with the battery cell assembly; in addition, the heat exchange assembly is configured to include a flexible part. The flexible part is lightweight, which is beneficial to reducing the weight of the battery device, reducing the production cost of the heat exchange assembly, and improving the energy density of the battery device; in addition, the flexible part is a flexible structure, which can make the heat exchange assembly better fit with the box assembly and / or the battery cell assembly, thereby absorbing the assembly tolerance of the heat exchange assembly, eliminating the need for filler or thermal conductive material, improving the fit between the heat exchange assembly and the box assembly and / or the battery cell assembly, and increasing the effective heat exchange area between the heat exchange assembly and the box assembly and / or the battery cell assembly, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange assembly.

[0085] A third aspect of the embodiments of the present disclosure provides an electrical device, comprising the battery device or the heat exchange assembly described above.

[0086] The battery device of the electric equipment provided by the embodiment of the present disclosure includes a box assembly, a battery cell assembly and a heat exchange assembly. The battery cell assembly is arranged in the accommodating cavity of the box assembly. The box assembly protects the battery cell assembly. The heat exchange assembly is provided with a hard connector and at least two flexible parts. The hard connector is connected to the flexible parts so that the connecting channel is connected to the heat exchange flow channel. That is to say, it can be connected to the outside through the hard connector so that the heat exchange medium enters the heat exchange flow channel through the connecting channel, thereby realizing heat exchange with the battery cell assembly; in addition, the heat exchange assembly is provided to include a flexible part. Flexible parts are lighter in weight, which is beneficial to reducing the weight of the battery device, reducing the production cost of the heat exchange component, and improving the energy density of the battery device; in addition, the flexible part is a flexible structure, which can make the heat exchange component fit better with the box component and / or the battery cell component, thereby absorbing the assembly tolerance of the heat exchange component, eliminating the need for fillers or thermal conductive materials, improving the fit between the heat exchange component and the box component and / or the battery cell component, and increasing the effective heat exchange area between the heat exchange component and the box component and / or the battery cell component, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange component.

[0087] A fourth aspect of the embodiments of the present disclosure provides an energy storage device, comprising the battery device or the heat exchange assembly described above.

[0088] The battery device of the energy storage device provided by the embodiment of the present disclosure includes a box assembly, a battery cell assembly and a heat exchange assembly. The battery cell assembly is arranged in the accommodating cavity of the box assembly. The box assembly protects the battery cell assembly. The heat exchange assembly is provided with a hard connector and at least two flexible parts. The hard connector is connected to the flexible parts so that the connecting channel is connected to the heat exchange flow channel. That is to say, it can be connected to the outside through the hard connector so that the heat exchange medium enters the heat exchange flow channel through the connecting channel, thereby realizing heat exchange with the battery cell assembly; in addition, the heat exchange assembly is provided to include a flexible part. Flexible parts are lighter in weight, which is beneficial to reducing the weight of the battery device, reducing the production cost of the heat exchange component, and improving the energy density of the battery device; in addition, the flexible part is a flexible structure, which can make the heat exchange component fit better with the box component and / or the battery cell component, thereby absorbing the assembly tolerance of the heat exchange component, eliminating the need for fillers or thermal conductive materials, improving the fit between the heat exchange component and the box component and / or the battery cell component, and increasing the effective heat exchange area between the heat exchange component and the box component and / or the battery cell component, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange component. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] Figure 1 A schematic structural diagram of a vehicle provided in one embodiment of the present application;

[0090] Figure 2 A schematic exploded perspective view of a battery device according to an embodiment of the present application;

[0091] Figure 3 A schematic structural diagram of a heat exchange assembly provided in one embodiment of the present application;

[0092] Figure 4 for Figure 3 Exploded diagram;

[0093] Figure 5 A top view of a heat exchange assembly provided in one embodiment of the present application;

[0094] Figure 6 for Figure 5 Cross-sectional view in the AA direction;

[0095] Figure 7 This is a cross-sectional view of a heat exchange assembly provided in another embodiment of the present application, and the cross-sectional view direction is the same as that of FIG. Figure 6 same;

[0096] Figure 8 This is an exploded view of a rigid connector provided in one embodiment of the present application.

[0097] Description of Reference Numerals

[0098] 10. Battery cell assembly; 11. Battery cell; 20. Box assembly; 21. Box body; 211. First box body portion; 212. Second box body portion; 22. Accommodation cavity; 30. Heat exchange assembly; 31. Flexible part; 311. Heat exchange flow channel; 312. Connection port; 32. Hard connector; 321. Connection channel; 322. Connection body; 3221. Flange; 3222. First connection section; 3223. Second connection section; 323. Connection ring; 3231. Step; 100. Battery device; 200. Controller; 300. Motor; 1000. Vehicle. DETAILED DESCRIPTION

[0099] Unless otherwise specified, all embodiments and optional embodiments of the present disclosure can be combined with each other to form new technical solutions.

[0100] Unless otherwise specified, all technical features and optional technical features disclosed herein can be combined with each other to form a new technical solution.

[0101] With the development of clean energy, more and more devices are using electricity as a driving force. Consequently, power batteries, such as lithium-ion batteries, that can store large amounts of electricity and undergo multiple charge and discharge cycles are rapidly developing. These batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in aerospace and other fields.

[0102] In the embodiment of the present disclosure, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0103] The battery cells may be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present disclosure.

[0104] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode, a negative electrode, and a separator, which is positioned between the positive and negative electrodes. During the charge and discharge process of a battery cell, active ions (such as lithium ions) are intercalated and released between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0105] The electrode assembly may be a wound structure, a laminated structure, or a mixed structure of wound and laminated structures.

[0106] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0107] In some embodiments, the electrode assembly is a laminate structure.

[0108] As an example, multiple positive electrode sheets and multiple negative electrode sheets can be provided respectively, and the multiple positive electrode sheets and the multiple negative electrode sheets can be alternately stacked.

[0109] As an example, a plurality of positive electrode sheets may be provided, and the negative electrode sheet may be folded to form a plurality of stacked folded segments, with a positive electrode sheet being sandwiched between adjacent folded segments.

[0110] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of stacked folded segments.

[0111] As an example, a plurality of separators may be provided, each of which is disposed between any adjacent positive electrode sheets or negative electrode sheets.

[0112] As an example, the separator may be provided continuously, and may be provided between any adjacent positive electrode sheets or negative electrode sheets by folding or winding.

[0113] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or polygonal.

[0114] In some embodiments, the electrode assembly is provided with tabs that can conduct current from the electrode assembly. The tabs include a positive tab and a negative tab.

[0115] In some embodiments, the battery cell may include an outer shell. The outer shell may be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film. In some embodiments, the outer shell may be a sealed structure or a non-sealed structure. As an example, when the outer shell is a non-sealed structure, the outer shell serves to protect the electrode assembly, and a sealing bag is further included between the outer shell and the electrode assembly, which 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 outer shell is a sealed structure, it is used to encapsulate components such as the electrode assembly and the electrolyte.

[0116] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack 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 polygonal battery, such as a hexagonal battery, etc. There is no special limitation in the present disclosure.

[0117] In some embodiments, the housing includes an end cap and a shell, wherein the shell has an opening and the end cap covers the opening. The shell may have one or more openings. One or more end caps may also be provided.

[0118] In some embodiments, the housing is provided with at least one electrode terminal, which is electrically connected to the tab. The electrode terminal may be directly connected to the tab or indirectly connected to the tab via a current collecting member. The electrode terminal may be provided on an end cap or on the housing.

[0119] In some embodiments, the energy storage equipment includes an energy storage container, an energy storage cabinet, etc.

[0120] Power plants are increasingly demanding higher area energy density for energy storage containers. Consequently, to increase the amount of electricity they can hold, the weight of the containers is also increasing. However, containers must be transported from production sites to their intended destinations by land and / or sea, and these transport methods often have weight restrictions. This creates a conflict between the increased energy density and the weight of the energy storage containers.

[0121] During the use of the battery device, the battery cells in the battery device will generate heat. If this heat is too high, it will have an adverse effect on the performance and service life of the battery device. Therefore, how to effectively dissipate heat from the battery cells of the battery device 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-mentioned cooling system may include multiple aluminum water-cooling plates laid in the battery device box, and the surfaces of the multiple water-cooling plates are in contact with the surfaces of the battery cells in the battery device. During use, a heat exchange medium such as water flows through the above-mentioned multiple water-cooling plates, thereby removing heat from the battery cells and cooling the battery cells. However, when the aluminum water-cooling plates in the above-mentioned cooling system do not fit well with the surfaces of the battery cells in the battery device, the heat exchange efficiency and heat exchange effect are poor. At the same time, when assembling with the battery cell assembly, assembly tolerance compensation and filling of caulking agent are required, and the production cost is high. In addition, the water-cooling plate and battery device box have high rigidity and require the use of hard structural adhesive, which makes disassembly difficult. If self-adhesive, soft or double-sided adhesive is used, the rigidity of the water-cooling plate and battery device box is relatively good, and when there is a gap and flatness mismatch, there will be problems with debonding.

[0122] In view of this, in order to improve the heat exchange efficiency and heat exchange effect of the heat exchange component, an embodiment of the present application provides a battery device, which includes a box assembly, a battery cell assembly and a heat exchange component. The battery cell assembly is arranged in the box assembly. The heat exchange component is used to exchange heat with the battery cell assembly. Among them, the heat exchange component includes a hard connector and at least two flexible parts, the at least two flexible parts are stacked, and a heat exchange flow channel is formed between the flexible parts, and the heat exchange flow channel is used to conduct a heat exchange medium. The hard connector has a connecting channel, the hard connector is connected to the flexible part, and the connecting channel is connected to the heat exchange flow channel.

[0123] The battery device provided in the embodiment of the present application includes a box assembly, a battery cell assembly and a heat exchange assembly. The battery cell assembly is arranged in the accommodating cavity of the box assembly. The box assembly protects the battery cell assembly. The heat exchange assembly is provided with a hard connector and at least two flexible parts. The hard connector is connected to the flexible part so that the connecting channel is connected to the heat exchange flow channel. That is to say, it can be connected to the outside through the hard connector so that the heat exchange medium enters the heat exchange flow channel through the connecting channel, thereby realizing heat exchange with the battery cell assembly; in addition, the heat exchange assembly is configured to include a flexible part, a flexible part, and a heat exchange medium. The flexible part is light in weight, which is beneficial to reducing the weight of the battery device, reducing the production cost of the heat exchange component, and improving the energy density of the battery device; in addition, the flexible part is a flexible structure with a certain deformation ability, which can make the heat exchange component fit and adapt better with the box component and / or the battery cell component, thereby absorbing the assembly tolerance of the heat exchange component, improving the fit between the heat exchange component and the box component and / or the battery cell component, and increasing the effective heat exchange area between the heat exchange component and the box component and / or the battery cell component, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange component.

[0124] The technical solutions described in the embodiments of this application are applicable to electrical equipment using a battery device. The electrical equipment includes a battery device according to any embodiment of this application, and the battery device is used to provide electrical energy.

[0125] Electrical equipment can be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. Vehicles can be fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0126] It should be noted that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical equipment described above, but can also be applied to all battery devices including box assemblies and electrical equipment using battery devices. However, for the sake of simplicity, the following embodiments are described using electric vehicles as an example.

[0127] Please refer to Figure 1, a controller 200, a motor 300 and a battery device 100 may be provided inside the vehicle 1000, and the controller 200 is used to control the battery device 100 to power the motor 300. For example, the battery device 100 may be provided at the bottom, front or rear of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000. For example, the battery device 100 may be used as an operating power source for the vehicle 1000, for the circuit system of the vehicle 1000, for example, for the working power requirements during the start-up, navigation and operation of the vehicle 1000. In another embodiment of the present application, the battery device 100 may not only be used as an operating power source for the vehicle 1000, but may also be used as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0128] See also Figure 2 In order to meet different power requirements, the battery device 100 includes a battery cell assembly 10, which may include multiple battery cells 11. The battery cell 11 refers to the smallest unit that constitutes the battery device 100 module or battery device 100 pack. The multiple battery cells 11 can be connected in series, in parallel, or in a mixed connection. Mixed connection means that the multiple battery cells 11 are connected in both series and parallel. The multiple battery cells 11 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 11 is accommodated in the box assembly 20. Of course, the battery device 100 can also be a battery device 100 module in the form of multiple battery cells 11 first connected in series, in parallel, or in a mixed connection, and the multiple battery device 100 modules are then connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box assembly 20. The battery device 100 may also include other structures. For example, the battery device 100 may also include a busbar component for achieving electrical connection between the multiple battery cells 11. Each battery cell 11 may be a secondary battery device 100 or a primary battery device 100; it may also be a lithium-sulfur battery device 100, a sodium-ion battery device 100, or a magnesium-ion battery device 100, but is not limited thereto. The battery cell 11 may be cylindrical, flat, rectangular, or in other shapes.

[0129] An embodiment of the present application provides a battery device 100, which includes a box assembly 20, a battery cell assembly 10 and a heat exchange assembly 30. The battery cell assembly 10 is arranged in the box assembly 20. The heat exchange assembly 30 is used to exchange heat with the battery cell assembly 10. The heat exchange assembly 30 includes a hard connector 32 and at least two flexible parts 31, and the at least two flexible parts 31 are stacked, and a heat exchange flow channel 311 is formed between the flexible parts 31, and the heat exchange flow channel 311 is used to conduct a heat exchange medium. The hard connector 32 has a connecting channel 321, the hard connector 32 is connected to the flexible part 31, and the connecting channel 321 is connected to the heat exchange flow channel 311.

[0130] Please refer to Figure 2 The battery device 100 includes a box assembly 20 and a battery cell assembly 10 . The battery cell assembly 10 includes at least one battery cell 11 . The battery cell 11 is disposed in a receiving cavity 22 of the box assembly 20 .

[0131] The housing assembly 20 can be a simple three-dimensional structure such as a single rectangular parallelepiped, cylinder, or sphere, or a complex three-dimensional structure composed of a combination of simple three-dimensional structures such as rectangular parallelepiped, cylinder, or sphere. The housing assembly 20 can be made of an alloy material such as aluminum alloy or iron alloy, a polymer material such as polycarbonate or polyisocyanurate foam, or a composite material such as glass fiber and epoxy resin.

[0132] The box assembly 20 is used to encapsulate the battery cell assembly 10 . The box assembly 20 can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell assembly 10 .

[0133] For example, the box assembly 20 is generally a rectangular parallelepiped structure, the length and width of the box assembly 20 are parallel to the horizontal plane, and the length of the box assembly 20 is parallel to the longest side of the rectangular parallelepiped structure of the box assembly 20. The height of the box assembly 20 is perpendicular to the ground.

[0134] Please refer to Figures 3 to 7 The embodiment of the present application provides a heat exchange component 30 , which is the heat exchange component 30 of the battery device 100 provided in the embodiment of the present application. The heat exchange component 30 is used to exchange heat with the battery cell component 10 .

[0135] Here, the heat exchange assembly 30 is disposed in the accommodating cavity 22 of the box assembly 20 , that is, it can be in direct contact with the battery cell assembly 10 , which is beneficial to improving the heat exchange efficiency and heat exchange effect.

[0136] That the heat exchange assembly 30 includes at least two flexible members 31 means that the number of the flexible members 31 included in the heat exchange assembly 30 may be two or more than two.

[0137] Here, the flexibility of the flexible member 31 refers to the material properties of the structure. This type of property can be a property imparted to the material due to its light weight, or a property imparted to the material due to at least one of its properties, such as thickness, stiffness, strength, and elastic modulus. As an example, the material of the flexible member 31 can be selected to be a material that is lighter than conventional structures such as aluminum plates or steel plates, and its flexibility can be controlled by the thickness, width, length, and material type of the flexible member 31. By configuring the heat exchange assembly 30 as the flexible member 31 in the embodiment of the present disclosure, the weight of the heat exchange assembly 30 can be reduced.

[0138] At least two flexible parts 31 include a heat-sealing area. The heat-sealing area is constructed by hot pressing of at least two flexible parts 31. The heat-sealing area separates the heat exchange component 30 to form a heat exchange channel 311 and a non-heat-sealing area. It means that the flexible parts 31 are hot pressed to form the heat exchange channel 311 and the non-heat-sealing area. That is, the heat-sealing area separates the heat exchange channel 311 and the non-heat-sealing area.

[0139] The heat exchange medium circulates in the heat exchange channel 311 to achieve heat exchange with the battery cell assembly 10 .

[0140] It should be noted that the specific type of heat exchange medium is not limited here, as long as it can cool the battery cells 11. For example, it can be gaseous or liquid. In the embodiment of the present application, the heat exchange medium is described as a cooling liquid.

[0141] Exemplarily, the heat exchange assembly 30 further includes a hard connector 32 having a connection channel 321 for communicating with the outside. Exemplarily, the hard connector 32 can be used to connect to a pipeline of an air conditioning system or a liquid storage device such as a water tank of a vehicle or electrical equipment.

[0142] The hard connector 32 may be a liquid inlet connector or a liquid outlet connector, or may include a liquid inlet connector and a liquid outlet connector.

[0143] Here, the hard connector 32 can be a metal part or a plastic part, etc., and the specific material is not limited here.

[0144] It should be noted that the specific number of heat exchange channels 311 is not limited here and can be one or more.

[0145] The multiple mentioned in the embodiments of the present application refers to a number of two or more.

[0146] The principle of heat exchange of the heat exchange component 30 for the battery cell assembly 10 is as follows: the heat exchange medium output by the heat exchange medium source (not shown) enters the heat exchange flow channel 311 through the connecting channel 321 of the hard connector 32. After the heat exchange medium exchanges heat with the battery cell assembly 10, the heat exchange medium flows out through the connecting channel 321 of the hard connector 32, completing the heat exchange of the battery cell assembly 10.

[0147] Here, the heat exchange assembly 30 exchanging heat with the battery cell assembly 10 may be to dissipate heat from the battery cell assembly 10 or to heat the battery cell assembly 10 .

[0148] The principle of heat dissipation of the battery cell assembly 10 by the heat exchange component 30 is as follows: the heat exchange medium output by the heat exchange medium source enters the heat exchange flow channel 311 through the connection channel 321 of the hard connector 32. After the heat exchange medium absorbs the heat generated during the operation of the battery cell assembly 10, the heat exchange medium flows out through the connection channel 321 of the hard connector 32, releasing the heat, and completing the cooling and heat dissipation of the battery cell assembly 10.

[0149] The principle of the heat exchange component 30 heating the battery cell assembly 10 is as follows: the heat exchange medium output by the heat exchange medium source enters the heat exchange flow channel 311 through the connecting channel 321 of the hard connector 32, and the heat exchange medium transfers heat to the battery cell assembly 10. After heating the battery cell assembly 10, the heat exchange medium flows out through the connecting channel 321 of the hard connector 32, completing the heating of the battery cell assembly 10.

[0150] The flexible part 31 is set as a flexible structure. The flexible part 31 has certain expandable or contractible characteristics. It can also be understood that the flexible part 31 can be an elastically deformable structure. The flexible part 31 has the ability to deform and restore deformation, so that the heat exchange component 30 can be formed into a contoured structure. The heat exchange component 30 can better adapt to the external contour shape of the battery cell or other components to improve the fit between the heat exchange component 30 and the box component 20 and / or the battery cell component 10, thereby increasing the effective heat exchange area between the heat exchange component 30 and the box component 20 and / or the battery cell component 10, thereby improving the heat exchange efficiency.

[0151] It should be noted that the flexible member 31 can have conductive properties, which is beneficial for equipotential setting; the flexible member 31 can also have electrical insulation properties, without the need for insulation treatment, which is beneficial for reducing the leakage risk and production cost of the battery device 100, thereby improving the reliability of the battery device 100.

[0152] The battery device provided in the embodiment of the present application includes a box assembly 20, a battery cell assembly 10 and a heat exchange assembly 30. The battery cell assembly 10 is arranged in the accommodating cavity 22 of the box assembly 20. The box assembly 20 protects the battery cell assembly 10. The heat exchange assembly 30 is provided with a hard connector 32 and at least two flexible parts 31. The hard connector 32 is connected to the flexible part 31 so that the connecting channel 321 is connected to the heat exchange flow channel 311. That is to say, it can be connected to the outside through the hard connector 32 so that the heat exchange medium enters the heat exchange flow channel 311 through the connecting channel 321, thereby realizing heat exchange with the battery cell assembly 10. In addition, the heat exchange assembly 30 is configured to include a flexible part 31. The flexible part 31 is lightweight, which is beneficial to reducing the mass of the battery device 100, reducing the production cost of the heat exchange component 30, and improving the energy density of the battery device 100; in addition, the flexible part 31 is a flexible structure with a certain deformation ability, which can make the heat exchange component 30 better fit and adapt to the box component 20 and / or the battery cell component 10, thereby absorbing the assembly tolerance of the heat exchange component 30, improving the fit between the heat exchange component 30 and the box component 20 and / or the battery cell component 10, and increasing the effective heat exchange area between the heat exchange component 30 and the box component 20 and / or the battery cell component 10, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange component 30.

[0153] The box assembly 20 is used to accommodate the battery cell assembly 10. The box assembly 20 can be of various structures. In some embodiments, please refer to Figure 2 The box assembly 20 includes a box body 21, which may include a first box portion 211 and a second box portion 212. The first box portion 211 and the second box portion 212 cover each other, and the first box portion 211 and the second box portion 212 jointly define a receiving cavity 22 for accommodating the battery cell assembly 10. The second box portion 212 may be a hollow structure with one end open. The first box portion 211 is a plate-like structure. The first box portion 211 covers the open side of the second box portion 212 to form the box body 21 with the receiving cavity 22. The first box portion 211 and the second box portion 212 may also be hollow structures with one end open. The open side of the first box portion 211 covers the open side of the second box portion 212 to form the box body 21 with the receiving cavity 22. Of course, the first box portion 211 and the second box portion 212 may have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0154] 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 .

[0155] Assuming that the first box portion 211 covers the top of the second box portion 212 , the first box portion 211 can also be referred to as an upper box cover, and the second box portion 212 can also be referred to as a lower box cover.

[0156] Exemplarily, the box assembly 20 includes a bottom guard plate, which may be provided at the bottom of the box body 21. By providing the bottom guard plate, the heat exchange assembly 30 may be supported and protected.

[0157] It should be noted that the specific method of connecting the hard connector 32 and the flexible component 31 is not limited here.

[0158] In some embodiments, see Figures 2 to 7 The flexible member 31 is formed with a connection port 312 communicating with the heat exchange channel 311 , and the hard connector 32 is hot-pressedly connected to the inner wall of the flexible member 31 at the edge of the connection port 312 .

[0159] The flexible member 31 is formed with a connection port 312 communicating with the heat exchange channel 311 . Thus, the hard connector 32 can be connected to the flexible member 31 through the connection port 312 , and the connection channel 321 is communicated with the heat exchange channel 311 .

[0160] Specifically, a partial area of the hard connector 32 can extend between at least two flexible parts 31, that is, extend into the heat exchange channel 311, and be hot-pressed connected to the inner wall of the flexible part 31 at the edge of the connection port 312. In other words, a partial area of the hard connector 32 extends into the heat exchange channel 311 and is hot-pressed connected to the side wall of the heat exchange channel 311.

[0161] It can be understood that the hard connection head 32 and the inner wall of the flexible part 31 at the edge of the connection port 312 are hot-pressed together, and on the projection plane parallel to the plane where the connection port 312 is located, the projection of the connection port 312 is located within the projection range of the area where the hard connection head 32 and the flexible part 31 are connected.

[0162] In this embodiment, the hard connector 32 is connected to the inner wall of the flexible part 31 at the edge of the connection port 312 by hot pressing to achieve a sealed connection between the hard connector 32 and the flexible part 31. The connection structure is simple and reliable, and the flexible part 31 can form a heat exchange channel 311 by hot pressing, so that the hard connector 32 is connected to the inner wall of the flexible part 31 at the edge of the connection port 312 by hot pressing, thereby reducing the assembly steps and improving the assembly efficiency.

[0163] Of course, in other embodiments, the hard connector 32 and the inner side wall of the flexible member 31 at the edge of the connection opening 312 may also be connected by adhesive.

[0164] In some embodiments, see Figures 2 to 7The flexible member 31 is formed with a connection port 312 communicating with the heat exchange channel 311. The hard connector 32 includes a connection body 322 and a connection ring 323, at least part of which is disposed within the heat exchange channel 311. The connection ring 323 is connected to the inner wall of the flexible member 31 at the edge of the connection port 312.

[0165] Here, the connecting ring 323 is connected to the inner wall of the flexible part 31 at the edge of the connecting port 312. Thus, on the projection plane parallel to the plane where the connecting port 312 is located, the projection of the connecting port 312 is located within the projection range of the connecting ring 323. This facilitates the connection between the connecting ring 323 and the inner wall of the flexible part 31 at the edge of the connecting port 312.

[0166] Here, the connecting body 322 and the connecting ring 323 can be directly connected or indirectly connected, for example, the connecting body 322 is connected to the outer wall of the flexible part 31 at the edge of the connecting port 312, and the connecting ring 323 is connected to the inner wall of the flexible part 31 at the edge of the connecting port 312, thereby realizing the connection between the connecting body 322 and the connecting ring 323.

[0167] The hard connector 32 includes a connecting body 322 and a connecting ring 323 , which together form a connecting channel 321 .

[0168] The connecting ring 323 is annular, and the inner space of the connecting ring 323 constitutes a part of the connecting channel 321 .

[0169] In the related art, the hard connector needs to be passed through the inside of the flexible part and then hot pressed. The connection area between the hard connector and the flexible part needs to be larger than the pipe diameter of the connecting body. This connection method is only suitable for straight pipes, and is not suitable for complex hard connectors with bending sections.

[0170] In this embodiment, the hard connector 32 is configured to include a connecting body 322 and a connecting ring 323, and the connecting body 322 and the connecting ring 323 jointly form a connecting channel 321. In this way, the connecting body 322 can be connected to the connecting ring from the outside of the flexible part 31 without extending from the inside of the flexible part 31, which is beneficial for the hard connector 32 to be connected to the flexible part 31 through the connecting ring 323, and to be connected to the connecting ring 323 through the connecting body 322, thereby realizing the connection between the hard connector 32 and the flexible part 31, improving the assembly efficiency of the connection between the hard connector 32 and the flexible part 31, and can be applicable to hard connectors 32 with complex structures.

[0171] It should be noted that the specific connection method between the connecting ring 323 and the flexible member 31 is not limited here.

[0172] In some embodiments, see Figures 3 to 7The connecting ring 323 is connected to the inner wall of the flexible member 31 at the edge of the connecting opening 312 by hot pressing.

[0173] The flexible member 31 is formed with a connection port 312 communicating with the heat exchange channel 311 . Thus, at least a portion of the connecting ring 323 can be disposed in the flexible member 31 and connected to the flexible member 31 , so that the connecting channel 321 communicates with the heat exchange channel 311 .

[0174] Specifically, at least a partial area of the connecting ring 323 can extend between at least two flexible parts 31, that is, extend into the heat exchange channel 311, and be hot-pressed connected to the inner wall of the flexible part 31 at the edge of the connecting port 312. In other words, at least a partial area of the connecting ring 323 extends into the heat exchange channel 311 and is hot-pressed connected to the side wall of the heat exchange channel 311.

[0175] It can be understood that the connecting ring 323 is hot-pressed to the inner wall of the flexible part 31 at the edge of the connecting port 312. On the projection plane parallel to the plane where the connecting port 312 is located, the projection of the connecting port 312 is located within the projection range of the area where the connecting ring 323 is connected to the flexible part 31.

[0176] In this embodiment, the connecting ring 323 is connected to the inner wall of the flexible part 31 at the edge of the connecting port 312 by hot pressing to achieve a sealed connection between the connecting ring 323 and the flexible part 31. The connection structure is simple and reliable, and the connecting ring 323 can be connected to the inner wall of the flexible part 31 at the edge of the connecting port 312 by hot pressing while the flexible part 31 forms the heat exchange channel 311 by hot pressing, thereby reducing the assembly steps and improving the assembly efficiency.

[0177] Of course, in other embodiments, the connecting ring 323 and the inner wall of the flexible member 31 at the edge of the connecting opening 312 may also be connected by adhesive bonding.

[0178] In some embodiments, please refer to Figures 3 to 7 One end of the connecting body 322 extends into the connecting ring 323 and is connected to the connecting ring 323.

[0179] One end of the connecting body 322 extends into the connecting ring 323 , that is, the main body of the connecting body 322 is located outside the flexible member 31 for communicating with the outside.

[0180] Here, one end of the connecting body 322 extends into the connecting ring 323 , which is conducive to achieving the connection between the outer wall of the connecting body 322 and the inner wall of the connecting ring 323 .

[0181] It should be noted that the bottom end surface of the connecting body 322 can be flush with the bottom end surface of the connecting ring 323 or lower than the bottom end surface of the connecting ring 323. In this way, the influence of the connecting body 322 on the heat exchange channel 311 can be minimized.

[0182] In this embodiment, one end of the connecting body 322 extends into the connecting ring 323 and is connected to the connecting ring 323. This connection method is simple and reliable.

[0183] It should be noted that the specific connection method between the connecting body 322 and the connecting ring 323 is not limited here.

[0184] For example, the connection body 322 and the connection ring 323 may be connected by welding, or by gluing, or by both welding and gluing.

[0185] Of course, in other embodiments, the connecting body 322 may not extend into the connecting ring 323, but abut against the end face of the connecting ring 323, so that the end face of the connecting body 322 and the end face of the connecting ring 323 are connected by welding and / or gluing.

[0186] In some embodiments, see Figures 3 to 7 The circumferential side wall of the connecting body 322 forms a flange 3221 , and the flexible member 31 is sandwiched between the flange 3221 and the connecting ring 323 .

[0187] The flexible member 31 is sandwiched between the flange 3221 and the connecting ring 323 . That is, the flange 3221 is located outside the flexible member 31 .

[0188] In this embodiment, a flange 3221 is formed on the circumferential side wall of the connecting body 322, and the flexible part 31 is clamped between the flange 3221 and the connecting ring 323. In this way, on the one hand, the flange 3221 can cooperate with the connecting ring 323 to clamp the flexible part 31 therebetween, thereby further improving the connection reliability between the hard connecting head 32 and the flexible part 31; on the other hand, during the connection between the connecting body 322 and the connecting ring 323, the flange 3221 can play a positioning role, thereby improving the assembly efficiency.

[0189] In some embodiments, see Figures 3 to 7 , the flange 3221 is connected to the flexible part 31.

[0190] The flange 3221 is connected to the flexible member 31 in that the lower surface of the flange 3221 is connected to the outer surface of the flexible member 31 .

[0191] In this embodiment, by connecting the flange 3221 to the flexible member 31 , the connection reliability between the hard connector 32 and the flexible member 31 is improved, and the sealing performance between the hard connector 32 and the flexible member 31 is also improved.

[0192] It should be noted that the specific method of connecting the flange 3221 and the flexible member 31 is not limited here.

[0193] In some embodiments, the flange 3221 is connected to the flexible member 31 by heat compression and / or adhesive bonding.

[0194] Here, the flange 3221 and the flexible member 31 may be connected by heat pressing, or by adhesive bonding, or by both heat pressing and adhesive bonding.

[0195] In this embodiment, the flange 3221 is connected to the outer wall of the flexible part 31 at the edge of the connection port 312 by hot pressing, which is conducive to the sealing connection between the flange 3221 and the flexible part 31. The connection structure is simple and reliable, and the flange 3221 can be connected to the outer wall of the flexible part 31 at the edge of the connection port 312 by hot pressing while the flexible part 31 forms the heat exchange channel 311 by hot pressing, thereby reducing the assembly steps and improving the assembly efficiency.

[0196] In this embodiment, the flange 3221 is connected to the outer wall of the flexible member 31 at the edge of the connection port 312 by gluing, which is conducive to the sealed connection between the flange 3221 and the flexible member 31. The connection structure is simple and reliable.

[0197] In some embodiments, see Figures 5 to 7 The difference between the outer diameter of the flange 3221 and the outer diameter of the connecting ring 323 is 0.2 mm to 30 mm.

[0198] The difference between the outer diameter of the flange 3221 and the outer diameter of the connecting ring 323 can be any one of 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 15mm, 18mm, 20mm, 22mm, 23mm, 25mm, 28mm, 30mm or any point value between any two of them.

[0199] The difference between the outer diameter of the flange 3221 and the outer diameter of the connecting ring 323 is 0.2 mm to 30 mm. That is, along the radial direction of the connecting ring 323 , the size of the flange 3221 is larger than that of the connecting ring 323 .

[0200] In this embodiment, by setting the difference between the outer diameter of the flange 3221 and the outer diameter of the connecting ring 323 to 0.2mm-30mm, it is beneficial to the connection between the flange 3221 and the flexible part 31, and the space occupied by the hard connecting head 32 can be reduced as much as possible, that is, the connection reliability between the hard connecting head 32 and the flexible part 31 and the reduction of the occupied space can be taken into account.

[0201] In some embodiments, see Figures 5 to 7 The difference between the outer diameter of the flange 3221 and the outer diameter of the connecting ring 323 is 2 mm to 5 mm.

[0202] The difference between the outer diameter of the flange 3221 and the outer diameter of the connecting ring 323 can be any one of 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, 3.2mm, 3.5mm, 3.6mm, 3.8mm, 3.9mm, 4mm, 4.1mm, 4.2mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, and 5mm, or any point value between any two of them.

[0203] In this embodiment, it is beneficial to further balance the connection reliability between the hard connector 32 and the flexible member 31 and reduce the occupied space.

[0204] In some embodiments, please refer to Figures 5 to 7 , along the radial direction of the connecting ring 323 , the size of the connecting area between the connecting ring 323 and the flexible member 31 is greater than or equal to 0.2 mm.

[0205] The size of the connection area between the connecting ring 323 and the flexible part 31 can be any one of 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 5mm, 10mm, 15mm, 18mm, 20mm, 25mm, 28mm, 30mm, 100mm, 300mm, 800mm, 1000mm or any value between two of them, or a value larger than 1000mm.

[0206] Here, the connection area between the connecting ring 323 and the flexible member 31 is the end surface of the connecting ring 323. The size of the connection area between the connecting ring 323 and the flexible member 31 can be the outer diameter of the connecting ring 323 minus the inner diameter of the connecting ring 323. Therefore, along the radial direction of the connecting ring 323, the size of the connection area between the connecting ring 323 and the flexible member 31 is greater than or equal to 0.2 mm, that is, the size of the outer diameter of the connecting ring 323 minus the inner diameter of the connecting ring 323 is greater than or equal to 0.2 mm.

[0207] In this embodiment, along the radial direction of the connecting ring 323 , by setting the size of the connecting area between the connecting ring 323 and the flexible member 31 to be greater than or equal to 0.2 mm, the connection reliability between the connecting ring 323 and the flexible member 31 is improved.

[0208] In some embodiments, please refer to Figures 5 to 7 Along the radial direction of the connecting ring 323 , the size of the connecting area between the connecting ring 323 and the flexible member 31 is 1 mm to 30 mm.

[0209] The size of the connection area between the connecting ring 323 and the flexible part 31 can be any one of 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 15mm, 18mm, 20mm, 22mm, 23mm, 25mm, 28mm, 30mm or any point value between two of them.

[0210] In this embodiment, along the radial direction of the connecting ring 323, by setting the size of the connection area between the connecting ring 323 and the flexible part 31 to 1mm-30mm, it is beneficial to improve the connection reliability between the connecting ring 323 and the flexible part 31, and can reduce the occupied space of the connecting ring 323 in the heat exchange channel 311 as much as possible, thereby improving the heat exchange efficiency, that is, the connection reliability of the connecting ring 323 and the flexible part 31 and the reduction of the occupied space can be taken into account.

[0211] In some embodiments, please refer to Figures 5 to 7 One end of the connecting body 322 extends into the connecting ring 323 and is connected to the inner wall of the connecting ring 323. The dimension of the connecting body 322 extending into the connecting ring 323 is greater than or equal to 0.2mm-20mm.

[0212] The dimension of the connecting body 322 extending into the connecting ring 323 can be any one of 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 15mm, 18mm, 20mm or any value between two of them.

[0213] In this embodiment, by setting the dimension of the connecting body 322 extending into the connecting ring 323 to 0.2mm-20mm, it is beneficial to the connection between the connecting body 322 and the connecting ring 323, and the space occupied by the connecting ring 323 in the heat exchange channel 311 can be reduced as much as possible, thereby improving the heat exchange efficiency, that is, the connection reliability between the connecting body 322 and the connecting ring 323 and the reduction of the occupied space can be taken into account.

[0214] In some embodiments, see Figure 7 and Figure 8 A portion of the inner side wall of the connecting ring 323 extends radially inward to form a step 3231 , and the end of the connecting body 322 abuts against the step 3231 .

[0215] Exemplarily, the inner diameter of the step 3231 is greater than or equal to the inner diameter of the connecting body 322 , so that the step 3231 does not block the flow of the heat exchange medium between the connecting channel 321 and the heat exchange channel.

[0216] Exemplarily, a step 3231 is formed at the bottom of the connecting ring 323 .

[0217] In this embodiment, a step 3231 is formed in the connecting ring 323, and the end of the connecting body 322 abuts against the step 3231. In this way, on the one hand, the end of the connecting body 322 can be connected to the step 3231, thereby further improving the connection reliability between the connecting body 322 and the connecting ring 323; on the other hand, during the connection between the connecting body 322 and the connecting ring 323, the step 3231 can play a positioning role, thereby improving the assembly efficiency.

[0218] In some embodiments, see Figure 7 and Figure 8 , along the radial direction of the connecting ring 323 , the size of the step 3231 is 0.2 mm-10 mm.

[0219] Along the radial direction of the connecting ring 323, the size of the step 3231 can be any one of 0.2mm, 0.3mm, 0.4mm, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm or any value between two of them.

[0220] In this embodiment, by setting the size of the step 3231 to 0.2mm-10mm along the radial direction of the connecting ring 323, it is beneficial to the connection between the connecting body 322 and the connecting ring 323, as well as the structural strength of the step 3231, and can minimize the space occupied by the step 3231 in the heat exchange channel 311, thereby improving the heat exchange efficiency, that is, it can take into account the connection reliability of the connecting body 322 and the connecting ring 323 and reduce the occupied space.

[0221] In some embodiments, please refer to Figure 7 and Figure 8 , along the radial direction of the connecting ring 323 , the size of the step 3231 is 0.5 mm-3 mm.

[0222] Along the radial direction of the connecting ring 323, the size of the step 3231 can be any one of 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.5mm, 2.6mm, 2.8mm, 2.9mm, 3mm or any point value between any two of them.

[0223] In this embodiment, by setting the size of the step 3231 to 0.5 mm to 3 mm along the radial direction of the connecting ring 323, it is beneficial to further balance the connection reliability between the connecting body 322 and the connecting ring 323 and reduce the occupied space.

[0224] In some embodiments, see Figure 7 and Figure 8 , along the direction perpendicular to the radial direction of the connecting ring 323 , the size of the step 3231 is 0.2 mm-10 mm.

[0225] Along the direction perpendicular to the radial direction of the connecting ring 323, the size of the step 3231 can be any one of 0.2mm, 0.3mm, 0.4mm, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm or any point value between any two of them.

[0226] In this embodiment, by setting the size of the step 3231 to 0.2mm-10mm along the direction perpendicular to the radial direction of the connecting ring 323, it is beneficial to ensure that the step 3231 has a certain structural strength, while also reducing the space occupied by the step 3231 in the heat exchange channel 311 as much as possible, thereby improving the heat exchange efficiency, that is, the structural strength of the step 3231 and the reduction of the occupied space can be taken into account.

[0227] In some embodiments, see Figure 7 and Figure 8 , along the direction perpendicular to the radial direction of the connecting ring 323 , the size of the step 3231 is 1 mm-3 mm.

[0228] Along the direction perpendicular to the radial direction of the connecting ring 323, the size of the step 3231 can be any one of 1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.8mm, 2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm or any point value between any two of them.

[0229] In this embodiment, by setting the size of the step 3231 to 1 mm-3 mm along a direction perpendicular to the radial direction of the connecting ring 323 , it is beneficial to further take into account the structural strength of the step 3231 and reduce the occupied space.

[0230] In some embodiments, the end of the connecting body 322 is connected to the step 3231 by welding and / or gluing.

[0231] Here, by forming a step 3231 in the connecting ring 323 , the end of the connecting body 322 abuts against the step 3231 , which facilitates the connection between the end of the connecting body 322 and the step 3231 .

[0232] For example, the connecting ring 323 can be made of a light-transmitting material, that is, a light-transmitting structural component, and the connecting body 322 can be made of a light-absorbing material. By using laser welding, the laser can pass through the connecting ring 323, and the energy is absorbed and heated at the contact surface between the connecting body 322 and the connecting ring 323, thereby achieving the effect of heating welding.

[0233] In this embodiment, one end of the connecting body 322 extends into the connecting ring 323 and is welded to the connecting ring 323. This connection method is simple and reliable.

[0234] Of course, in other embodiments, the connecting body 322 and the connecting ring 323 may also be connected by adhesive bonding.

[0235] In some embodiments, see Figure 3 、 Figure 4 and Figure 8 The connecting body 322 includes a first connecting segment 3222 and a second connecting segment 3223. The extension direction of the first connecting segment 3222 is perpendicular to the radial direction of the connecting ring 323. The extension direction of the second connecting segment 3223 is perpendicular to the extension direction of the first connecting segment 3222. The first connecting segment 3222 is connected to the connecting ring 323.

[0236] Here, the first connecting segment 3222 , the second connecting segment 3223 and the connecting ring 323 together form a connecting channel 321 .

[0237] The connecting body 322 includes a first connecting section 3222 and a second connecting section 3223. The first connecting section 3222 and the second connecting section 3223 are connected, and the extension directions of the two are perpendicular, that is, the connecting body 322 is an L-shaped structure, so that the hard connecting head 32 can be easily connected to the flexible part 31 and the entire vehicle pipeline.

[0238] In this embodiment, the hard connector 32 can be configured to include a connecting body 322 and a connecting ring 323, and the connecting body 322 and the connecting ring 323 together form a connecting channel 321. This is beneficial for the hard connector 32 to be connected to the flexible part 31 through the connecting ring 323, and to be connected to the connecting ring 323 through the connecting body 322, thereby realizing the connection between the hard connector 32 and the flexible part 31, improving the assembly efficiency of the connection between the hard connector 32 and the flexible part 31, and can be applicable to hard connectors 32 with complex structures.

[0239] In some embodiments, see Figures 3 to 8 The circumferential side wall of the hard connector 32 forms a flange 3221 , and the flange 3221 is connected to the outer wall of the flexible member 31 at the edge of the connection port 312 .

[0240] In this embodiment, by forming a flange 3221 on the circumferential side wall of the hard connector 32, the flange 3221 can play a positioning role during the connection between the hard connector 32 and the flexible part 31, thereby improving assembly efficiency; and by connecting the flange 3221 to the outer wall of the flexible part 31 at the edge of the connection port 312, it is beneficial to improve the connection reliability between the hard connector 32 and the flexible part 31.

[0241] In some embodiments, at least two flexible members 31 are configured as metal plasticized films.

[0242] The flexible member 31 is a single-layer or multi-layer film.

[0243] Here, the metal-plasticized film is a metal-plastic composite material, that is, it includes a metal layer and a plastic layer.

[0244] In this embodiment, the thin and lightweight metal-plasticized film, combined with the heat exchange channel 311 formed between at least two metal-plasticized films, is unaffected by the extrusion process and eliminates the need for high thickness requirements. This reduces the overall thickness and weight of the heat exchange assembly 30. Furthermore, the insulating properties of the metal-plasticized film reduce the risk of insulation failure. This reduces the risk of reaction between the heat exchange assembly 30 and the heat exchange medium flowing within it, further minimizing the risk of corrosion and leakage of the heat exchange medium.

[0245] Exemplarily, at least two flexible members 31 are configured as aluminum-plastic films.

[0246] Aluminum-plastic film has high barrier properties, good cold stamping formability, puncture resistance, electrolyte stability, and electrical insulation.

[0247] 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 stacked in sequence.

[0248] Here, the flexible member 31 includes a metal layer and a non-metal layer, that is, a composite material member composed of the metal layer and the non-metal layer.

[0249] For example, the metal layer and the non-metal layer may be formed by hot pressing or hot melting.

[0250] Here, the number of metal layers and non-metal layers is not limited.

[0251] In this embodiment, the flexible member 31, composed of a stack of metal and non-metal layers, is thin and lightweight. Furthermore, by forming a heat exchange channel 311 between at least two flexible members 31, it is unaffected by the extrusion process and eliminates the need for high thickness requirements, thereby reducing the overall thickness and weight of the heat exchange assembly 30. Furthermore, the heat exchange assembly 30 does not react with the heat exchange medium flowing therein, eliminating the risk of corrosion or leakage.

[0252] In some embodiments, the metal layer includes one of aluminum foil, copper foil, and steel foil.

[0253] By setting the metal layer to be one of aluminum foil, copper foil and steel foil, the flexible member 31 can have a certain structural strength and can play an isolation role.

[0254] In some embodiments, the non-metallic layer includes one of polypropylene, polyvinyl chloride, and polyethylene.

[0255] By setting the non-metallic layer to be one of polypropylene, polyvinyl chloride and polyethylene, the flexible member 31 can have a certain waterproof effect.

[0256] For example, a non-metallic layer made of a corrosion-resistant material having acid and alkali corrosion resistance may be selected, or in other words, additives may be added to the non-metallic layer to make the non-metallic layer have acid and alkali corrosion resistance.

[0257] In some embodiments, the non-metallic layer is a hot melt layer.

[0258] Here, by setting the non-metallic layer as a hot-melt layer, that is, composed of a hot-melt material, it is advantageous to combine the non-metallic layer and the metal layer through hot melting, which makes molding simple and the production efficiency high.

[0259] In some embodiments, the flexible member 31 is a layered structure, and the flexible member 31 includes a corrosion-resistant layer, an isolation layer, and a waterproof layer arranged in sequence. The waterproof layer is closer to the heat exchange channel 311 than the corrosion-resistant layer.

[0260] Here, the corrosion-resistant layer may be a nylon layer formed of nylon material, thereby having certain corrosion resistance, such as acid and alkali corrosion resistance.

[0261] The isolation layer may be a metal layer, and the metal layer may be configured as one of aluminum foil, copper foil and steel foil, which can provide the flexible member 31 with a certain structural strength and play an isolation role.

[0262] The waterproof layer may be a non-metallic layer, and the non-metallic layer may be configured to be one of polypropylene, polyvinyl chloride and polyethylene, so that the flexible member 31 may have a certain waterproof effect.

[0263] In this embodiment, by configuring the flexible member 31 to include a corrosion-resistant layer, an isolation layer, and a waterproof layer arranged in sequence, the waterproof layer is closer to the heat exchange channel 311 than the corrosion-resistant layer, which is beneficial to improving the reliability of the heat exchange assembly 30.

[0264] In some embodiments, the isolation layer has a thickness of 6.5 μm to 100 μm.

[0265] The thickness of the isolation layer can be any one of 6.5μm, 10μm, 15μm, 20μm, 25μm, 30μm, 35μm, 38μm, 40μm, 45μm, 50μm, 55μm, 60μm, 65μm, 70μm, 75μm, 80μm, 85μm, 90μm, 92μm, 95μm, 100μm or any value between two of them.

[0266] In this embodiment, by setting the thickness of the isolation layer to 6.5 μm-100 μm, the flexible member 31 can have a certain structural strength and flexibility.

[0267] In some embodiments, the isolation layer has a thickness of 6.5 μm to 15 μm.

[0268] The thickness of the isolation layer can be any one of 6.5μm, 7μm, 7.5μm, 7.8μm, 8μm, 8.3μm, 8.5μm, 8.8μm, 9μm, 9.2μm, 9.5μm, 9.7μm, 10μm, 10.3μm, 10.5μm, 10.8μm, 11μm, 11.5μm, 11.8μm, 12μm, 12.3μm, 12.5μm, 13μm, 13.5μm, 14μm, 14.5μm, 15μm or any value between any two of them.

[0269] In this embodiment, by setting the thickness of the isolation layer to 6.5 μm-15 μm, the flexible member 31 can be further endowed with certain structural strength and flexibility.

[0270] In some embodiments, the corrosion-resistant layer has a thickness of 5 μm to 20 μm.

[0271] The thickness of the corrosion-resistant layer can be 5μm, 5.5μm, 5.8μm, 6μm, 6.5μm, 7μm, 7.5μm, 7.8μm, 8μm, 8.3μm, 8.5μm, 8.8μm, 9μm, 9.2μm, 9.5μm, 9.7μm, 10μm, 10.3μm, 10.5μm, 10.8μm, 11μm, 11.5μm, 11. Any one of the point values of 8μm, 12μm, 12.3μm, 12.5μm, 13μm, 13.5μm, 14μm, 14.5μm, 15μm, 15.5μm, 16μm, 16.5μm, 17μm, 17.5μm, 18μm, 18.5μm, 18.7μm, 19μm, 19.5μm, 20μm or any point value between any two of them.

[0272] In this embodiment, by setting the thickness of the corrosion-resistant layer to 5 μm-20 μm, the wear resistance and toughness of the flexible member 31 can be improved.

[0273] In some embodiments, the waterproof layer has a thickness of 50 μm to 120 μm.

[0274] The thickness of the waterproof layer can be any one of 50μm, 55μm, 60μm, 65μm, 70μm, 75μm, 80μm, 85μm, 90μm, 92μm, 95μm, 100μm, 105μm, 108μm, 110μm, 115μm, 120μm or any value between two of them.

[0275] In this embodiment, by setting the thickness of the waterproof layer to 50 μm-120 μm, the waterproof layer can have a certain structural strength, improve the waterproof performance, and facilitate hot pressing connection of the flexible member 31 through the waterproof layer.

[0276] In some embodiments, the thickness of the flexible member 31 is 0.05 mm to 0.3 mm.

[0277] For example, it is any one of 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.15mm, 0.2mm, 0.21mm, 0.22mm, 0.25mm, 0.27mm, 0.28mm, and 0.3mm, or a point value between any two of them.

[0278] In this embodiment, by setting the thickness of the flexible part 31 to 0.05mm-0.3mm, the heat exchange component 30 made of the flexible part 31 has a certain structural strength while the overall thickness of the heat exchange component 30 is smaller, which is beneficial to reducing the overall volume and weight of the battery device 100 and increasing the energy density of the battery device 100.

[0279] In some embodiments, the thickness of the flexible member 31 is 0.08 mm to 0.2 mm.

[0280] For example, it is any one of 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, and 0.2mm, or a point value between any two of them.

[0281] In this embodiment, by setting the thickness of the flexible part 31 to 0.08mm-0.2mm, the heat exchange component 30 made of the flexible part 31 has a certain structural strength, and the overall thickness of the heat exchange component 30 is further made smaller, which is beneficial to further reduce the overall volume and weight of the battery device 100, so as to further increase the energy density of the battery device 100.

[0282] In some embodiments, the elastic modulus of the flexible member 31 is 0.1 MPa-10000 MPa.

[0283] Exemplarily, the elastic modulus of the flexible part 31 can be 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, and 10000 MPa, or any point value between any two of them.

[0284] The elastic modulus describes the unit strain caused by unit stress when a solid is subjected to a certain force range. It is one of the fundamental physical quantities of a material. The larger the elastic modulus, the greater the material's stiffness and compressive resistance. The elastic modulus is a physical quantity that describes the elasticity of a material.

[0285] In this embodiment, by setting the elastic modulus of the flexible part 31 to 0.1MPa-10000MPa, the flexible part 31 has a certain structural strength, thereby improving the reliability of the heat exchange component 30, and has a certain deformation ability, which can improve the fit between the heat exchange component 30 and the box component 20 and / or the battery cell component 10, thereby increasing the effective heat exchange area between the heat exchange component 30 and the box component 20 and / or the battery cell component 10, thereby improving the heat exchange efficiency and heat exchange effect of the heat exchange component 30.

[0286] In one specific embodiment, the flexible member 31 has a layered structure, comprising a corrosion-resistant layer, an isolation layer, and a waterproof layer, arranged in sequence. The waterproof layer is closer to the medium flow channel 32 than the corrosion-resistant layer. The isolation layer has a thickness of 6.5 μm to 15 μm. The corrosion-resistant layer has a thickness of 5 μm to 20 μm. The waterproof layer has a thickness of 50 μm to 120 μm. The flexible member 31 has a thickness of 0.05 mm to 0.3 mm. The elastic modulus of the flexible member 31 is 0.1 MPa to 10,000 MPa.

[0287] It should be noted that the outer diameter of the flange 3221; the outer diameter of the connecting ring 323; the size of the connection area between the connecting ring 323 and the flexible part 31 along the radial direction of the connecting ring 323; the size of the connecting body 322 extending into the connecting ring 323; the size of the step 3231 along the radial direction of the connecting ring 323; the size of the step 3231 along the direction perpendicular to the radial direction of the connecting ring 323; the thickness of the flexible part 31, etc. can be measured by a micrometer, a dynamometer, a caliper or a vernier caliper, etc. It should be noted that the above measurements can all be carried out at normal temperature and pressure.

[0288] The elastic modulus of the flexible member 31 may be measured by at least one of a static tensile test method, a dynamic test method, a sonic velocity method, a nanoindentation method, and a bending method. The measuring instrument may include a nanoindenter and a universal testing machine.

[0289] For example, the elastic modulus of the flexible member 31 can be measured at room temperature and pressure by nanoindentation. The nanoindentation method uses a tiny indenter to indent the surface of the flexible member 31 and calculates the elastic modulus by analyzing the relationship between the indentation depth and the load.

[0290] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in further embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in this application and features of different embodiments or examples, unless they are mutually inconsistent.

[0291] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. A battery device, characterized in that: include: Cabinet assembly; A battery cell assembly is disposed in the box assembly; a heat exchange assembly, the heat exchange assembly being used to exchange heat with the battery monomer assembly; In which, the heat exchange component includes a hard connector and at least two flexible parts, the at least two flexible parts are stacked, and a heat exchange flow channel is formed between the flexible parts, and the heat exchange flow channel is used to conduct the heat exchange medium; the hard connector has a connecting channel, the hard connector is connected to the flexible part, and the connecting channel is connected to the heat exchange flow channel.

2. The battery device according to claim 1, wherein: The flexible member is formed with a connection port communicating with the heat exchange flow channel, and the hard connector is connected to the inner wall of the flexible member at the edge of the connection port by hot pressing.

3. The battery device according to claim 1, wherein: The flexible part is formed with a connection port communicating with the heat exchange channel, and the hard connector includes a connection body and a connection ring, at least a portion of the connection ring is arranged in the heat exchange channel, and the connection ring is connected to the inner wall of the flexible part located at the edge of the connection port.

4. The battery device according to claim 3, characterized in that The connecting ring is connected to the inner wall of the flexible member at the edge of the connecting opening by hot pressing.

5. The battery device according to claim 3, wherein: One end of the connecting body extends into the connecting ring and is connected to the connecting ring.

6. The battery device according to claim 5, characterized in that The connecting body is connected to the connecting ring by welding and / or gluing.

7. The battery device according to claim 3, characterized in that The circumferential side wall of the connecting body forms a flange, and the flexible member is sandwiched between the flange and the connecting ring.

8. The battery device according to claim 7, characterized in that The flange is connected to the flexible member.

9. The battery device according to claim 8, characterized in that The flange is connected to the flexible member by heat pressing and / or adhesive bonding.

10. The battery device according to claim 7, characterized in that The difference between the outer diameter of the flange and the outer diameter of the connecting ring is 0.2 mm to 30 mm.

11. The battery device according to claim 10, characterized in that The difference between the outer diameter of the flange and the outer diameter of the connecting ring is 2 mm to 5 mm.

12. The battery device according to claim 3, wherein: Along the radial direction of the connecting ring, a size of a connecting area between the connecting ring and the flexible member is greater than or equal to 0.2 mm.

13. The battery device according to claim 12, characterized in that Along the radial direction of the connecting ring, the size of the connecting area between the connecting ring and the flexible member is 1 mm to 30 mm.

14. The battery device according to claim 3, characterized in that One end of the connecting body extends into the connecting ring and is connected to the inner side wall of the connecting ring; the dimension of the connecting body extending into the connecting ring is greater than or equal to 0.2mm-20mm.

15. The battery device according to claim 3, characterized in that A partial area of the inner side wall of the connecting ring extends radially inward to form a step, and the end of the connecting body abuts against the step.

16. The battery device according to claim 15, characterized in that Along the radial direction of the connecting ring, the size of the step is 0.2 mm-10 mm.

17. The battery device according to claim 16, characterized in that Along the radial direction of the connecting ring, the size of the step is 0.5mm-3mm.

18. The battery device according to claim 15, wherein: Along a direction perpendicular to the radial direction of the connecting ring, the size of the step is 0.2 mm-10 mm.

19. The battery device according to claim 18, wherein: Along a direction perpendicular to the radial direction of the connecting ring, the size of the step is 1 mm to 3 mm.

20. The battery device according to claim 15, wherein: The end of the connecting body is connected to the step by welding and / or gluing.

21. The battery device according to claim 3, characterized in that The connecting body includes a first connecting segment and a second connecting segment. The extending direction of the first connecting segment is perpendicular to the radial direction of the connecting ring. The extending direction of the second connecting segment is perpendicular to the extending direction of the first connecting segment. The first connecting segment is connected to the connecting ring.

22. The battery device according to claim 2, characterized in that The circumferential side wall of the hard connector forms a flange, and the flange is connected to the outer side wall of the flexible member located at the edge of the connecting port.

23. The battery device according to claim 1, wherein: The at least two flexible members are configured as metal plasticized films.

24. The battery device according to claim 23, characterized in that The at least two flexible members are configured as aluminum-plastic films.

25. The battery device according to any one of claims 1 to 24, characterized in that: The flexible member is a layered structure, comprising a metal layer and a non-metal layer, wherein the metal layer and the non-metal layer are stacked in sequence.

26. The battery device according to claim 25, characterized in that The metal layer includes one of aluminum foil, copper foil and steel foil.

27. The battery device according to claim 25, characterized in that The non-metallic layer includes one of polypropylene, polyvinyl chloride and polyethylene.

28. The battery device according to claim 25, wherein: The non-metallic layer is a hot-melt layer.

29. The battery device according to any one of claims 1 to 24, characterized in that: The flexible member is a layered structure, and includes a corrosion-resistant layer, an isolation layer, and a waterproof layer arranged in sequence. The waterproof layer is closer to the heat exchange channel than the corrosion-resistant layer.

30. The battery device according to claim 29, wherein: The thickness of the isolation layer is 6.5 μm-100 μm.

31. The battery device according to claim 30, characterized in that The thickness of the isolation layer is 6.5 μm-15 μm.

32. The battery device according to claim 29, wherein: The thickness of the corrosion-resistant layer is 5 μm-20 μm.

33. The battery device according to claim 29, wherein: The thickness of the waterproof layer is 50 μm-120 μm.

34. The battery device according to any one of claims 1 to 24, characterized in that: The thickness of the flexible member is 0.05mm-0.3mm.

35. The battery device according to claim 34, characterized in that The thickness of the flexible member is 0.08 mm to 0.2 mm.

36. The battery device according to any one of claims 1 to 24, characterized in that: The elastic modulus of the flexible member is 0.1 MPa-10000 MPa.

37. A heat exchange component, characterized in that: The heat exchange component is the heat exchange component of the battery device according to any one of claims 1 to 36, and the heat exchange component is used to exchange heat with the battery cell assembly.

38. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1-36 or the heat exchange component according to claim 37.

39. An energy storage device, characterized in that: Comprising the battery device according to any one of claims 1-36 or the heat exchange component according to claim 37.

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