Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment. The battery device comprises a box body, a battery monomer and a supporting heat exchange assembly, the box body is provided with an accommodating space for accommodating the battery cells and comprises a first wall; the battery monomer is arranged in the accommodating space and comprises an electrode terminal, and the electrode terminal is arranged towards the first wall. And the supporting heat exchange assembly is arranged between the battery monomer and the first wall and is used for supporting the battery monomer, so that a gap is formed between the electrode terminal and the first wall. And a first heat exchange flow channel is arranged in the supporting heat exchange assembly and is used for allowing a heat exchange medium to circulate so as to exchange heat with the battery monomers. According to the battery device and the electric equipment, the heat exchange efficiency of the battery device can be improved, and the operation stability of the single batteries is improved.

Description

Technical Field

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

[0002] The operating temperature of the battery cell has an important impact on the efficiency of the battery cell. In order to ensure the stability of the operating efficiency of the battery cell, a heat exchange component is usually set between two adjacent battery cells to control the operating temperature of the battery cell. However, the heat exchange efficiency of the part of the battery cell that is not covered by the heat exchange component is low, which affects the operating stability of the battery cell. Utility Model Content

[0003] In view of the above problems, the present application provides a battery device and an electrical device, which can improve the heat exchange efficiency of the battery device and improve the stability of the operation of the battery cells.

[0004] In a first aspect, the present application provides a battery device, comprising a housing, a battery cell, and a support heat exchange assembly. The housing has a storage space for accommodating the battery cell, and the housing comprises a first wall. The battery cell is disposed in the storage space, and the battery cell comprises an electrode terminal, and the electrode terminal is disposed toward the first wall. The support heat exchange assembly is disposed between the battery cell and the first wall, and the support heat exchange assembly is used to support the battery cell so that a gap is formed between the electrode terminal and the first wall. A first heat exchange flow channel is provided in the support heat exchange assembly, and the first heat exchange flow channel is used for allowing a heat exchange medium to circulate to exchange heat with the battery cell.

[0005] In the technical solution of the embodiment of the present application, a box is provided to provide a stable structural environment for the battery cell, reducing the influence of external moisture and impurities on the operation of the battery cell. The electrode terminals on the battery cell are used to transmit the electric energy inside the battery cell to external devices. The support heat exchange assembly supports the battery cell to reduce the extrusion and damage between the electrode terminals and some electronic components connected to the electrode terminals and the first wall. In addition, a first heat exchange flow channel is thermally arranged in the support heat exchange assembly to perform heat exchange on one side of the electrode terminal on the battery cell, and quickly cool down the heat generated during the operation of the battery cell, thereby reducing the risk of thermal runaway failure caused by the above-mentioned position, improving the heat exchange efficiency of the battery cell, and thus improving the stability of the operation of the battery cell. In addition, the first heat exchange flow channel is arranged in the support heat exchange assembly, which utilizes the original support structure in the battery device, does not occupy additional space, and improves the utilization rate of the internal space of the box.

[0006] In some embodiments, the battery device includes a plurality of battery cell assemblies, the battery cell assemblies include a plurality of battery cells stacked along a first direction, the plurality of battery cell assemblies are sequentially arranged along a second direction, the second direction intersects with the first direction, and the supporting heat exchange assembly includes a plurality of heat exchange tubes spaced along the second direction. In the above structure, by forming a battery cell assembly with a plurality of battery cells, and then arranging the battery cell assemblies in a box, the orderliness and compactness of the battery cell arrangement are improved, and a plurality of heat exchange tubes are arranged to exchange heat for the battery cell assembly, taking into account a plurality of battery cell assemblies, improving the balance of heat exchange, and improving the temperature stability in the entire battery device.

[0007] In some embodiments, a heat exchange tube is disposed between two adjacent battery cell assemblies, and two first heat exchange channels are disposed in the heat exchange tube, the first heat exchange channels extend along a first direction, and the two first heat exchange channels are disposed at intervals along a second direction, and each first heat exchange channel is disposed corresponding to a battery cell assembly. In the above structure, one heat exchange tube simultaneously exchanges heat for two battery cell assemblies, thereby improving the heat exchange efficiency of the heat exchange tube.

[0008] In some embodiments, the first ends of the two first heat exchange channels in each heat exchange tube are interconnected along the first direction, and the second ends of the two adjacent heat exchange tubes are interconnected along the first direction. A plurality of heat exchange tubes are connected in series to form a heat exchange channel. The heat exchange supporting assembly further includes a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is connected to the inlet of the heat exchange channel, and the liquid outlet pipe is connected to the outlet of the heat exchange channel. In the above structure, by connecting a plurality of heat exchange tubes in series, the connection of the heat exchange tubes is simplified, and the convenience and efficiency of assembly are improved.

[0009] In some embodiments, the two first heat exchange channels in each heat exchange tube are interconnected along the first end of the first direction, and the heat exchange support assembly further includes an inlet pipe and an outlet pipe. The inlet pipe includes a first main pipe and a plurality of first branch pipes. The inlet of the first main pipe is used for the heat exchange medium to flow in. One end of the first branch pipe is connected to the first main pipe, and the other end is connected to the inlet of the first heat exchange channel. The outlet pipe includes a second main pipe and a plurality of second branch pipes. The outlet of the second main pipe is used for the heat exchange medium to flow out. One end of the second branch pipe is connected to the second main pipe, and the other end is connected to the outlet of the first heat exchange channel, so as to connect the plurality of heat exchange tubes in parallel. In the above structure, the plurality of first heat exchange channels are connected in parallel, which increases the flow rate of the heat exchange medium between the plurality of first heat exchange channels and improves the efficiency of heat exchange of the battery cells.

[0010] In some embodiments, the battery device further includes a heat exchange assembly, which includes a heat exchange plate, a third manifold, and a fourth manifold. The heat exchange plate is disposed on one side of the battery cell along the first direction, and a second heat exchange channel is provided in the heat exchange plate. The inlet of the third manifold is used for the inflow of heat exchange medium, and the third manifold is connected to the second heat exchange channel to input the heat exchange medium into the second heat exchange channel. The outlet of the fourth manifold is used for the outflow of heat exchange medium, and the fourth manifold is connected to the second heat exchange channel to output the medium in the second heat exchange channel. In the above structure, by providing a heat exchange assembly, most of the heat generated by the internal operation of the battery cell can be taken away, thereby improving the stability of the operation of the battery cell.

[0011] In some embodiments, the heat exchange plate is connected to the side of the battery cell with the largest area. In the above structure, by connecting the heat exchange plate to the large surface of the battery cell, the cooling area can be increased and the heat exchange efficiency can be improved.

[0012] In some embodiments, the heat exchange plate is connected to the largest side surfaces of multiple battery cells arranged along the second direction. The above structure connects the large surfaces of multiple battery cells at the same time, further increasing the heat exchange area and improving the efficiency of battery cell temperature control.

[0013] In some embodiments, the third main pipe is connected to the liquid inlet pipe, and the fourth main pipe is connected to the liquid outlet pipe. In the above structure, the heat exchange component and the supporting heat exchange component share the same liquid inlet pipe and liquid outlet pipe, which improves the heat exchange efficiency and the convenience of connection and assembly.

[0014] In some embodiments, the supporting heat exchange assembly further includes a connection layer, which is disposed between the battery cell and the heat exchange tube, and is used to connect the battery cell and the heat exchange tube. In the above structure, the connection layer is provided to stably connect the heat exchange tube and the battery cell, while improving the heat exchange efficiency.

[0015] In some embodiments, the supporting heat exchange assembly further comprises an insulating layer, and the insulating layer covers the outer circumference of the heat exchange tube. In the above structure, the insulating layer reduces the risk of short circuit of the heat exchange tube and improves the safety of the heat exchange process.

[0016] In some embodiments, the heat exchange tube includes any one of a metal tube, a ceramic tube, a carbon fiber tube, and a graphene tube. The above-mentioned tube has certain structural strength, good insulation performance, and good thermal conductivity, and can provide stable support while effectively transferring heat, while reducing the risk of short circuit of the heat exchange tube and improving the stability of the battery cell operation process.

[0017] In some embodiments, the supporting heat exchange assembly further comprises a heat conductive pad disposed between the heat exchange tube and the battery cell. By disposing the heat conductive pad, the heat exchange efficiency between the battery cell and the heat exchange tube is improved.

[0018] In a second aspect, the present application provides an electrical device, which includes the battery device in the above embodiment, and the battery device is used to provide electrical energy.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0021] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0022] Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application;

[0023] Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application;

[0024] Figure 4 A schematic diagram of a cross-sectional structure of a battery device provided in some embodiments of the present application;

[0025] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of part A;

[0026] Figure 6 A schematic diagram of the structure of a heat exchange tube provided in some embodiments of the present application;

[0027] Figure 7 for Figure 2 A schematic diagram of the enlarged structure of part B;

[0028] Figure 8 A schematic diagram of the structure of heat exchange tubes provided in other embodiments of the present application.

[0029] DETAILED DESCRIPTION OF REFERENCE NUMERALS

[0030] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor; 5. Box; 51. First box part; 52. Second box part; 501. First wall; 6. Battery cell; 10. Electrode assembly; 20. Shell; 25. Electrode terminal; 30. End cover; 40. Shell; X, first direction; Y, second direction; 7. Support heat exchange assembly; 701. First heat exchange flow channel; 702. Heat exchange tube; 703. First flow channel; 704. Second flow channel; 705. Third flow channel; 706. Fourth flow channel; 707. Connecting pipe; 708. Liquid inlet pipe; 709. Liquid outlet pipe; 710. First main pipe; 711. First branch pipe; 712. Second main pipe; 713. Second branch pipe; 8. Heat exchange assembly; 801. Heat exchange plate; 802. Third main pipe; 803. Fourth main pipe; 804. Thermal pad. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0033] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0036] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0037] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0040] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0041] A battery device usually includes multiple battery cells. During the operation of the battery cells, a large amount of heat is released. If the heat cannot be effectively discharged, the operating temperature of the battery cells will rise sharply, and the risk of battery cell explosion and combustion will also increase. In particular, the electrode terminals set on the battery cells are connected to other electronic components and used to transmit the electrical energy inside the battery cells. Heat accumulates quickly there. Excessive temperature not only reduces the operating efficiency of the battery cells, but also may cause the risk of battery cells burning and exploding.

[0042] Based on the above situation, an embodiment of the present application provides a battery device, in which a box is provided to provide a stable structural environment for the battery cell, reducing the influence of external moisture and impurities on the operation of the battery cell. The electrode terminals on the battery cell are used to transmit the electric energy inside the battery cell to external devices. The support heat exchange assembly supports the battery cell to reduce the extrusion and damage between the electrode terminal and some electronic components connected to the electrode terminal and the first wall. In addition, a first heat exchange flow channel is thermally arranged in the support heat exchange assembly to perform heat exchange on one side of the electrode terminal on the battery cell, and the heat generated during the operation of the battery cell is quickly cooled down, reducing the risk of thermal runaway failure caused by the above-mentioned position, improving the heat exchange efficiency of the battery cell, and thus improving the stability of the operation of the battery cell. In addition, the first heat exchange flow channel is arranged in the support heat exchange assembly, which utilizes the original support structure in the battery device, does not occupy additional space, and improves the utilization rate of the internal space of the box.

[0043] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel or in mixed connection through a busbar.

[0044] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0045] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0046] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0047] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0048] In the embodiment of the present application, the battery cell may be a secondary battery cell, which refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0049] Battery cells may include but are not limited to lithium ion battery cells, sodium ion battery cells, sodium lithium ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium sulfur battery cells, magnesium ion battery cells, nickel metal hydride battery cells, nickel cadmium battery cells, lead storage battery cells, etc.

[0050] As an example, the battery cell may be a cylindrical battery cell, a prismatic 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 particular limitation in the present application.

[0051] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0052] In some embodiments, the battery device may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0053] The battery device disclosed in the embodiments of the present application can be used in various energy storage systems that use the battery device as a power source or use the battery device as an energy storage element. The electrical device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0054] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0055] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0056] like Figure 1 As shown, a battery device 2 is disposed inside the vehicle 1, and the battery device 2 can be disposed at the bottom, head, or tail of the vehicle 1. The battery device 2 can be used to power the vehicle 1, for example, the battery device 2 can be used as an operating power source for the vehicle 1.

[0057] The vehicle 1 may further include a controller 3 and a motor 4 , wherein the controller 3 is used to control the battery device 2 to supply power to the motor 4 , for example, to meet the power requirements of starting, navigating and driving the vehicle 1 .

[0058] In some embodiments of the present application, the battery device 2 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0059] Figure 2 Schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application.

[0060] The box 5 is used to accommodate the battery cell 6, and the box 5 can be of various structures. In some embodiments, the box 5 can include a first box portion 51 and a second box portion 52, the first box portion 51 and the second box portion 52 cover each other, and the first box portion 51 and the second box portion 52 jointly define a receiving space 53 for accommodating the battery cell.

[0061] In the battery device 2, the battery cell 6 can be one or more. If there are more than one battery cell 6, the battery cells 6 can be connected in series, in parallel or in mixed connection. Mixed connection means that the battery cells 6 are both connected in series and in parallel. The battery cells 6 can be directly connected in series, in parallel or in mixed connection, and then the whole formed by the battery cells 6 is accommodated in the box 5; of course, the battery cells can also be connected in series, in parallel or in mixed connection to form a battery module, and then the battery modules are connected in series, in parallel or in mixed connection to form a whole, and then accommodated in the box 5.

[0062] In some optional embodiments, the battery cells 6 may also be directly accommodated in the box body 5 to reduce the connecting components or supporting components required to form the battery module and improve the energy density of the battery device 2 .

[0063] For example, the battery cell 6 may be the smallest unit constituting the battery device 2 .

[0064] Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application.

[0065] like Figure 3 As shown, in some embodiments, the battery cell 6 includes a housing 40 and an electrode assembly 10 accommodated in the housing 40 .

[0066] The housing 40 is used to encapsulate the electrode assembly 10 and the electrolyte and other components. The housing 40 may be a steel housing, an aluminum housing, a plastic housing (such as polypropylene), a composite metal housing (such as a copper-aluminum composite housing 40 ), or an aluminum-plastic film.

[0067] In some embodiments, the housing 40 includes a shell 20 and an end cover 30 . The shell 20 has an opening, and the end cover 30 is used to cover the opening.

[0068] In some embodiments, the battery cell 6 further includes an electrolyte contained in the housing 40. The electrolyte plays a role in conducting ions between the positive and negative electrodes and can be in liquid, gel or solid state.

[0069] In some embodiments, the battery cell 6 includes an electrode terminal 25 . The electrode terminal 25 is electrically connected to the electrode assembly 10 to output or input electrical energy of the battery cell 6 .

[0070] Please refer to Figures 2 to 5 , Figure 2 A schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application, Figure 3 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application, Figure 4 A schematic diagram of a cross-sectional structure of a battery device provided in some embodiments of the present application, Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A.

[0071] As shown in the figure, an embodiment of the present application provides a battery device 2, including a box body 5, a battery cell 6 and a support heat exchange assembly 7. The box body 5 has a storage space for accommodating the battery cell 6, and the box body 5 includes a first wall 501. The battery cell 6 is arranged in the storage space, and the battery cell 6 includes an electrode terminal 25, and the electrode terminal 25 is arranged toward the first wall 501. The support heat exchange assembly 7 is arranged between the battery cell 6 and the first wall 501, and the support heat exchange assembly 7 is used to support the battery cell 6 so that a gap is formed between the electrode terminal 25 and the first wall 501. A first heat exchange flow channel 701 is provided in the support heat exchange assembly 7, and the first heat exchange flow channel 701 is used for the heat exchange medium to circulate to exchange heat with the battery cell 6.

[0072] The box body 5 includes a first box body portion 51 and a second box body portion 52. The second box body portion 52 includes a first wall 501. The first wall 501 can be a support plate or a bottom plate of the box body 5. The outer shell 40 of the battery cell 6 is provided with an electrode terminal 25, and the electrode terminal 25 protrudes from the surface of the outer shell 40. The battery cell 6 is assembled into the box body 5, and the electrode terminal 25 is in direct contact with the first wall 501. The first wall 501 will apply pressure to the electrode terminal 25, so that the electrode terminal 25 and the components connected to the electrode terminal 25 are deformed and broken. The support heat exchange component 7 can be made of a material with a certain structural strength. The support heat exchange component 7 is arranged between the outer shell 40 of the battery cell 6 and the first wall 501, and the thickness of the support heat exchange component 7 is greater than the height of the electrode terminal 25 protruding along the surface of the outer shell 40, so as to form a sufficient gap space to accommodate the electrode terminal 25.

[0073] In addition, a first heat exchange channel 701 is provided in the support heat exchange component 7. The heat exchange channel can be linear or curved, and can accommodate a sufficient volume of heat exchange medium to ensure heat exchange efficiency. For example, a channel space can be formed in a solid pipe. The support heat exchange component 7 can be provided at a position close to the electrode terminal 25, so as to facilitate heat exchange at a position near the electrode terminal 25 and provide support at the same time.

[0074] In the technical solution of the embodiment of the present application, the box 5 is provided to provide a stable structural environment for the battery cell 6, and reduce the influence of external moisture and impurities on the operation of the battery cell 6. The electrode terminal 25 on the battery cell 6 is used to transmit the electric energy inside the battery cell 6 to the external device. The support heat exchange assembly 7 supports the battery cell 6, and reduces the extrusion and damage between the electrode terminal 25 and some electronic components connected to the electrode terminal 25 and the first wall 501. In addition, the first heat exchange flow channel 701 is thermally arranged in the support heat exchange assembly 7 to exchange heat on one side of the electrode terminal 25 on the battery cell 6, and quickly cool down the heat generated during the operation of the battery cell 6, thereby reducing the risk of the above-mentioned position heat runaway failure, improving the heat exchange efficiency of the battery cell 6, and thus improving the stability of the operation of the battery cell 6. In addition, the first heat exchange flow channel 701 is arranged in the support heat exchange assembly 7, which utilizes the original support structure in the battery device 2, does not occupy additional space, and improves the utilization rate of the internal space of the box 5.

[0075] In some embodiments of the present application, the battery device 2 includes a plurality of battery cell assemblies, the battery cell assemblies include a plurality of battery cells 6 stacked along a first direction X, the plurality of battery cell assemblies are arranged in sequence along a second direction Y, the second direction Y intersects with the first direction X, and the support heat exchange assembly 7 includes a plurality of heat exchange tubes 702 spaced apart along the second direction Y.

[0076] The battery cells 6 in the battery cell assembly have a certain arrangement form in terms of physical structure. Multiple battery cells 6 in the battery cell assembly may be connected in series or in parallel, or the battery cells 6 may not have a specific electrical connection form. Exemplarily, the first direction X may be the thickness direction of the battery cell 6, and the second direction Y is perpendicular to the first direction X. The second direction Y may be the width direction of the battery cell 6. The third direction is the height direction of the battery cell 6. The electrode terminal 25 may be disposed on one side of the first wall 501 along the third direction.

[0077] In the above structure, multiple battery cells 6 are formed into a battery cell assembly, and then the battery cell assembly is arranged in the box body 5, so that the orderliness and compactness of the arrangement of the battery cells 6 are improved, and multiple heat exchange tubes 702 are arranged to exchange heat for the battery cell assembly, taking into account multiple battery cell assemblies, improving the balance of heat exchange, and improving the temperature stability in the entire battery device 2.

[0078] In some embodiments of the present application, a heat exchange tube 702 is disposed between two adjacent battery cell assemblies, and two first heat exchange channels 701 are disposed in the heat exchange tube 702. The first heat exchange channels 701 extend along a first direction X, and the two first heat exchange channels 701 are spaced apart along a second direction Y, and each first heat exchange channel 701 is disposed corresponding to a battery cell assembly.

[0079] Optionally, a plurality of first heat exchange channels 701 may be provided in each heat exchange tube 702 , and the plurality of first heat exchange channels 701 may be connected in series or in parallel in sequence.

[0080] In the above structure, the design of the heat exchange tube 702 in the battery device 2 achieves efficient, reliable and compact operation of the battery device 2 and improves the performance and life of the battery device 2 by improving the heat exchange efficiency, space utilization and heat exchange balance, as well as simplifying the structural design.

[0081] like Figure 6 As shown, in some embodiments of the present application, the two first heat exchange channels 701 in each heat exchange tube 702 are interconnected at the first ends along the first direction X, and the second ends of two adjacent heat exchange tubes 702 are interconnected along the first direction X, and multiple heat exchange tubes 702 are connected in series in sequence to form a heat exchange channel. The heat exchange support component 7 also includes a liquid inlet pipe 708 and a liquid outlet pipe 709, the liquid inlet pipe 708 is connected to the inlet of the heat exchange channel, and the liquid outlet pipe 709 is connected to the outlet of the heat exchange channel.

[0082] Exemplarily, the supporting heat exchange assembly 7 includes two heat exchange tubes 702, namely a first pipe and a second pipe, the first pipe is provided with a first flow channel 703 and a second flow channel 704, and the second pipe is provided with a third flow channel 705 and a fourth flow channel 706. The first flow channel 703, the second flow channel 704, the third flow channel 705 and the fourth flow channel 706 are arranged in parallel with each other, and the width, volume and shape of the plurality of flow channels are substantially the same.

[0083] Along the first end of the first direction X, the second flow channel 704 and the third flow channel 705 are connected to each other through the connecting pipe 707 , the first flow channel 703 can be connected to the liquid inlet pipe 708 , and the fourth flow channel 706 can be connected to the liquid outlet pipe 709 .

[0084] In the above structure, multiple heat exchange tubes 702 are connected in series to form a continuous heat exchange flow channel. This design allows the heat exchange medium to flow more smoothly in the flow channel, and multiple battery cell components can obtain sufficient heat exchange, thereby improving the overall heat exchange efficiency.

[0085] like Figure 2 as well as Figure 7 , Figure 8 As shown, in some embodiments of the present application, the first ends of the two first heat exchange channels 701 in each heat exchange tube 702 along the first direction X are connected to each other, and the heat exchange support assembly 7 further includes a liquid inlet pipe 708 and a liquid outlet pipe 709. The liquid inlet pipe 708 includes a first main pipe 710 and a plurality of first branch pipes 711. The inlet of the first main pipe 710 is used for heat exchange medium to flow in. One end of the first branch pipe 711 is connected to the first main pipe 710, and the other end is connected to the inlet of the first heat exchange channel 701. The liquid outlet pipe 709 includes a second main pipe 712 and a plurality of second branch pipes 713. The outlet of the second main pipe 712 is used for heat exchange medium to flow out. One end of the second branch pipe 713 is connected to the second main pipe 712, and the other end is connected to the outlet of the first heat exchange channel 701, so as to connect the plurality of heat exchange tubes 702 in parallel.

[0086] Exemplarily, the first main pipe 710 and the second main pipe 712 both extend along the second direction Y, and the first branch pipe 711 is connected between the first main pipe 710 and the heat exchange tube 702. One end of the first main pipe 710 has an inlet, which is the inlet of the liquid inlet pipe 708. The other end of the first main pipe 710 is closed to reduce the risk of heat exchange medium leakage. One end of the second main pipe 712 has an outlet, which is the outlet of the liquid outlet pipe 709. The other end of the second main pipe 712 is closed to reduce the risk of heat exchange medium leakage.

[0087] The two first heat exchange channels 701 in the heat exchange tube 702 are connected to each other. A fifth channel and a sixth channel are provided in the first pipeline, and the two channels are connected to each other through a connecting channel. The fifth channel has an inlet connected to the first branch pipe 711, and the sixth channel has an outlet connected to the second branch pipe 713. Multiple first branch pipes 711 and multiple second branch pipes 713 are connected in parallel to connect multiple heat exchange tubes 702 in parallel.

[0088] In the above structure, the plurality of first heat exchange channels 701 are connected in parallel, which increases the flow rate of the heat exchange medium between the plurality of first heat exchange channels 701 and improves the heat exchange efficiency of the battery cells 6 .

[0089] In some embodiments of the present application, the battery device 2 further includes a heat exchange assembly 8, which includes a heat exchange plate 801, a third manifold 802, and a fourth manifold 803. The heat exchange plate 801 is arranged on one side of the battery cell 6 along the first direction X, and the heat exchange plate 801 has a second heat exchange channel. The inlet of the third manifold 802 is used for the inflow of heat exchange medium, and the third manifold 802 is connected to the second heat exchange channel to input the heat exchange medium into the second heat exchange channel. The outlet of the fourth manifold 803 is used for the outflow of heat exchange medium, and the fourth manifold 803 is connected to the second heat exchange channel to output the medium in the second heat exchange channel. Exemplarily, the heat exchange plate 801 is attached to the side with the largest area of ​​the battery cell 6 to realize the heat exchange of the battery cell 6. The main function of the heat exchange plate 801 is to provide an effective heat exchange surface so that the heat generated by the battery cell 6 can be quickly transferred to the heat exchange medium. The inlet of the third manifold 802 is the input point of the heat exchange medium. The third main pipe 802 introduces the heat exchange medium into the system, especially into the second heat exchange flow channel, thereby starting the heat exchange process. The outlet of the fourth main pipe 803 is the output point of the heat exchange medium. After the heat exchange, the heat exchange medium carries the heat of the battery cell 6 and is exported from the system through the fourth main pipe 803 for further processing or recycling.

[0090] The heat generated by the battery cell 6 during operation is quickly transferred to the heat exchange medium through the heat exchange plate 801. Since the heat exchange medium flows in the second heat exchange flow channel, it can effectively absorb and take away most of the heat of the battery cell 6. Through effective heat management, the temperature of the battery cell 6 can be controlled within a safe range, thereby improving its operating stability and life.

[0091] In the above structure, by providing the heat exchange assembly 8 to exchange heat for the battery cell 6 , most of the heat generated by the internal operation of the battery cell 6 can be taken away, thereby improving the stability of the operation of the battery cell 6 .

[0092] In some embodiments of the present application, the heat exchange plate 801 is connected to the largest side of the battery cell 6. In the above structure, by connecting the heat exchange plate 801 to the large surface of the battery cell 6, the cooling area can be increased and the heat exchange efficiency can be improved.

[0093] In some embodiments of the present application, the heat exchange plate 801 is connected to the largest side surfaces of the multiple battery cells 6 arranged along the second direction Y. The above structure connects the large surfaces of the multiple battery cells 6 at the same time, further increasing the heat exchange area and improving the efficiency of temperature control of the battery cells 6.

[0094] In some embodiments of the present application, the third manifold 802 is connected to the liquid inlet pipe 708, and the fourth manifold 803 is connected to the liquid outlet pipe 709. In the above structure, the heat exchange assembly 8 and the supporting heat exchange assembly 7 share the same liquid inlet pipe 708 and liquid outlet pipe 709, which improves the heat exchange efficiency and the convenience of connection and assembly.

[0095] In some embodiments of the present application, the supporting heat exchange assembly 7 further includes a connection layer, which is disposed between the battery cell 6 and the heat exchange tube 702, and is used to connect the battery cell 6 and the heat exchange tube 702. Exemplary connection layers may be welding connection layers, adhesive connection layers, etc. In the above structure, the connection layer is provided to stably connect the heat exchange tube 702 and the battery cell 6, while improving the heat exchange efficiency.

[0096] In some embodiments of the present application, the supporting heat exchange assembly 7 further includes an insulating layer, which covers the outer periphery of the heat exchange tube 702. Exemplarily, the insulating layer is usually made of a material with high resistivity and good heat resistance, such as ceramic, plastic or special polymer. In the above structure, the insulating layer reduces the risk of short circuit of the heat exchange tube 702 and improves the safety of the heat exchange process.

[0097] In some embodiments of the present application, the heat exchange tube 702 includes any one of a metal tube, a ceramic tube, a carbon fiber tube, and a graphene tube.

[0098] Ceramics have a certain structural strength and can withstand certain pressure and mechanical shock. Ceramic materials are also excellent insulating materials that can effectively prevent the passage of current, thereby reducing the risk of short circuits. Although ceramics themselves have relatively average thermal conductivity, they can be combined with other thermally conductive materials through composite technology to form pipes with good thermal conductivity.

[0099] Carbon fiber is lightweight and high-strength, so carbon fiber tubes have excellent mechanical properties and fatigue resistance. Carbon fiber itself is conductive, but through appropriate composite technology and surface treatment, it can be made into pipes with good insulation properties. In addition, carbon fiber has excellent thermal conductivity, which enables carbon fiber tubes to transfer heat efficiently.

[0100] Graphene is a two-dimensional carbon material with extremely high strength and toughness. Graphene tubes therefore have excellent structural strength and corrosion resistance. Although graphene itself is conductive, through compounding with other materials and specific structural design, it can be made into pipes with the desired insulation properties. Graphene is a material with good thermal conductivity, which makes graphene tubes have advantages in heat transfer.

[0101] The above-mentioned pipes can be selected according to design requirements. They all have certain structural strength, good insulation performance and good thermal conductivity. They can provide stable support while effectively transferring heat, while reducing the risk of short circuit of the heat exchange tube 702 and improving the stability of the battery cell 6 operation process.

[0102] In some embodiments of the present application, the support heat exchange assembly 7 further includes a heat conductive pad 804 disposed between the heat exchange tube 702 and the battery cell 6. By providing the heat conductive pad 804, the heat exchange efficiency between the battery cell 6 and the heat exchange tube 702 is improved.

[0103] In some optional embodiments, the battery device 2 includes a box body 5, a battery cell 6 and a support heat exchange assembly 7. The box body 5 has a storage space for accommodating the battery cell 6, and the box body 5 includes a first wall 501. The battery cell 6 is arranged in the storage space, and the battery cell 6 includes an electrode terminal 25, and the electrode terminal 25 is arranged toward the first wall 501. The support heat exchange assembly 7 is arranged between the battery cell 6 and the first wall 501, and the support heat exchange assembly 7 is used to support the battery cell 6, so that a gap is formed between the electrode terminal 25 and the first wall 501. A first heat exchange flow channel 701 is provided in the support heat exchange assembly 7, and the first heat exchange flow channel 701 is used for heat exchange medium to circulate to exchange heat with the battery cell 6. The battery device 2 includes a plurality of battery cell assemblies, and the battery cell assemblies include a plurality of battery cells 6 stacked along a first direction X, and the plurality of battery cell assemblies are arranged in sequence along a second direction Y, and the second direction Y intersects with the first direction X, and the support heat exchange assembly 7 includes a plurality of heat exchange tubes 702 arranged at intervals along the second direction Y. The heat exchange tube 702 is arranged between two adjacent battery monomer assemblies. Two first heat exchange channels 701 are arranged in the heat exchange tube 702. The first heat exchange channels 701 extend along the first direction X, and the two first heat exchange channels 701 are arranged at intervals along the second direction Y. Each first heat exchange channel 701 is arranged corresponding to a battery monomer assembly. The first ends of the two first heat exchange channels 701 in each heat exchange tube 702 along the first direction X are interconnected. The support heat exchange assembly 7 also includes a liquid inlet pipe 708 and a liquid outlet pipe 709. The liquid inlet pipe 708 includes a first main pipe 710 and a plurality of first branch pipes 711. The inlet of the first main pipe 710 is used for the heat exchange medium to flow in. One end of the first branch pipe 711 is connected to the first main pipe 710, and the other end is connected to the inlet of the first heat exchange channel 701. The liquid outlet pipe 709 includes a second main pipe 712 and a plurality of second branch pipes 713. The outlet of the second main pipe 712 is used for the heat exchange medium to flow out. One end of the second branch pipe 713 is connected to the second main pipe 712, and the other end is connected to the outlet of the first heat exchange channel 701, so as to connect the plurality of heat exchange pipes 702 in parallel. The battery device 2 also includes a heat exchange assembly, which includes a heat exchange plate 801, a third main pipe 802 and a fourth main pipe 803. The heat exchange plate 801 is arranged on one side of the battery cell 6 along the first direction X, and the heat exchange plate 801 has a second heat exchange channel. The inlet of the third main pipe 802 is used for the heat exchange medium to flow in. The third main pipe 802 is connected to the second heat exchange channel to input the heat exchange medium into the second heat exchange channel. The outlet of the fourth main pipe 803 is used for the heat exchange medium to flow out. The fourth main pipe 803 is connected to the second heat exchange channel to output the medium in the second heat exchange channel. The third manifold 802 is connected to the liquid inlet pipe 708, and the fourth manifold 803 is connected to the liquid outlet pipe 709. The heat exchange support assembly 7 further includes a connection layer, which is disposed between the battery cell 6 and the heat exchange pipe 702 and is used to connect the battery cell 6 and the heat exchange pipe 702.

[0104] The embodiment of the present application also provides an electrical device, which includes the battery device 2 in the above embodiment, and the battery device 2 is used to provide electrical energy. The box body 5 is set in the battery device 2 to provide a stable structural environment for the battery cell 6, reducing the influence of external moisture and impurities on the operation of the battery cell 6. The electrode terminal 25 on the battery cell 6 is used to transmit the electrical energy inside the battery cell 6 to the external device. The support heat exchange component 7 supports the battery cell 6 to reduce the extrusion and damage between the electrode terminal 25 and some electronic components connected to the electrode terminal 25 and the first wall 501. In addition, the first heat exchange flow channel 701 is thermally set in the support heat exchange component 7 to exchange heat on the side of the electrode terminal 25 on the battery cell 6, and quickly cool down the heat generated during the operation of the battery cell 6, reducing the risk of the above-mentioned position heat runaway failure, improving the heat exchange efficiency of the battery cell 6, and thus improving the stability of the operation of the battery cell 6. In addition, the first heat exchange flow channel 701 is set in the support heat exchange component 7, utilizing the original support structure in the battery device 2, not occupying additional space, and improving the utilization rate of the internal space of the box body 5.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery device, characterized in that: include: A box body having a storage space for storing a battery cell, wherein the box body comprises a first wall; A battery cell is disposed in the accommodation space, the battery cell includes an electrode terminal, and the electrode terminal is disposed toward the first wall; A support heat exchange component is arranged between the battery cell and the first wall. The support heat exchange component is used to support the battery cell so that a gap is formed between the electrode terminal and the first wall. A first heat exchange flow channel is provided in the support heat exchange component. The first heat exchange flow channel is used for heat exchange medium to circulate to exchange heat with the battery cell.

2. The battery device according to claim 1, characterized in that: The battery device includes a plurality of battery cell assemblies, each of which includes a plurality of battery cells stacked along a first direction, and the plurality of battery cell assemblies are sequentially arranged along a second direction, the second direction intersecting with the first direction, and the supporting heat exchange assembly includes a plurality of heat exchange tubes spaced apart along the second direction.

3. The battery device according to claim 2, characterized in that: The heat exchange tube is arranged between two adjacent battery cell assemblies. Two first heat exchange channels are arranged in the heat exchange tube. The first heat exchange channels extend along the first direction, and the two first heat exchange channels are arranged at intervals along the second direction. Each of the first heat exchange channels corresponds to one of the battery cell assemblies.

4. The battery device according to claim 2, characterized in that: The first ends of the two first heat exchange channels in each of the heat exchange tubes are connected to each other along the first direction, and the second ends of the two adjacent heat exchange tubes are connected to each other along the first direction. A plurality of the heat exchange tubes are connected in series in sequence to form a heat exchange channel, and the supporting heat exchange component also includes a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected to the inlet of the heat exchange channel, and the liquid outlet pipe is connected to the outlet of the heat exchange channel.

5. The battery device according to claim 2, characterized in that: The first ends of the two first heat exchange channels in each of the heat exchange tubes along the first direction are connected to each other, and the supporting heat exchange component further includes: A liquid inlet pipe, comprising a first main pipe and a plurality of first branch pipes, wherein the inlet of the first main pipe is used for allowing heat exchange medium to flow in, one end of the first branch pipe is connected to the first main pipe, and the other end is connected to the inlet of the first heat exchange channel; The liquid outlet pipe includes a second main pipe and a plurality of second branch pipes. The outlet of the second main pipe is used for allowing the heat exchange medium to flow out. One end of the second branch pipe is connected to the second main pipe, and the other end is connected to the outlet of the first heat exchange channel to connect the plurality of heat exchange pipes in parallel.

6. The battery device according to claim 4 or 5, characterized in that: The battery device further includes a heat exchange component, wherein the heat exchange component includes: A heat exchange plate is disposed on one side of the battery cell along the first direction, and has a second heat exchange channel in the heat exchange plate. A third header, the inlet of the third header is used for heat exchange medium to flow in, the third header is connected with the second heat exchange flow channel, and the heat exchange medium is input into the second heat exchange flow channel; A fourth main pipe, the outlet of which is used for allowing the heat exchange medium to flow out, and the fourth main pipe is connected to the second heat exchange channel to output the medium in the second heat exchange channel.

7. The battery device according to claim 6, characterized in that: The heat exchange plate is connected to the side surface of the battery cell with the largest area.

8. The battery device according to claim 7, characterized in that: The heat exchange plate is connected to the side surfaces of the battery cells having the largest area arranged along the second direction.

9. The battery device according to claim 6, characterized in that: The third main pipe is connected to the liquid inlet pipe, and the fourth main pipe is connected to the liquid outlet pipe.

10. The battery device according to any one of claims 2 to 5, characterized in that: The supporting heat exchange component further includes a connecting layer, which is disposed between the battery cell and the heat exchange tube, and is used to connect the battery cell and the heat exchange tube.

11. The battery device according to any one of claims 2 to 5, characterized in that: The supporting heat exchange component also includes an insulating layer, and the insulating layer covers the outer circumference of the heat exchange tube.

12. The battery device according to any one of claims 2 to 5, characterized in that: The heat exchange tube includes any one of a metal tube, a ceramic tube, a carbon fiber tube and a graphene tube.

13. The battery device according to any one of claims 2 to 5, characterized in that: The supporting heat exchange assembly also includes a heat conductive pad disposed between the heat exchange tube and the battery cell.

14. An electrical device, characterized in that: The electrical equipment comprises a battery device as claimed in any one of claims 1 to 11, wherein the battery device is used to provide electrical energy.

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