Battery device, energy storage device and power utilization device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery device, an energy storage device and a power utilization device.The battery device comprises a battery assembly, first heat exchange assemblies and heat-conducting glue, the battery assembly comprises at least two battery packs arranged in the first direction, each battery pack comprises single batteries, and the first heat exchange assemblies are arranged between every two adjacent battery packs; the first heat exchange assembly is configured to exchange heat with the battery pack located on one side of the first heat exchange assembly, at least part of the structure of the edge of the first heat exchange assembly is folded to form a flange structure, so that a containing groove with an opening is formed in the first heat exchange assembly, and the opening faces the battery pack on one side. The heat-conducting glue is arranged in the containing groove and connected with the first heat exchange assembly and the battery pack in a heat-conducting mode. According to the battery device, effective heat dissipation of the multiple battery packs arranged in the first direction can be achieved, the risk that the heat-conducting glue displaces or overflows and the like can be reduced, the risk that other components in the battery device are polluted by the heat-conducting glue is reduced, and the performance of the battery device is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device, an energy storage device, and an electrical device. Background Technology

[0002] The main function of a battery device is to combine individual battery cells to provide stable, reliable, safe and long-lasting electrical energy to electrical devices.

[0003] In order to increase the capacity of the battery device, multiple battery packs are usually provided in the battery device and arranged along a first direction. In order to dissipate heat from the battery device, a heat sink is usually provided at one end of the battery device in the first direction.

[0004] However, the aforementioned heat sink can only provide heat dissipation for one of the battery packs, resulting in other battery packs arranged along the first direction not being able to dissipate heat effectively, affecting the performance, lifespan, and safety of the battery device. Utility Model Content

[0005] This application provides a battery device, an energy storage device, and an electrical device, which can not only effectively dissipate heat from multiple battery packs, but also limit the thermal conductive adhesive, thereby reducing the risk of displacement or overflow of the thermal conductive adhesive. This solves the technical problem in the prior art that the heat dissipation component can only provide heat dissipation for one battery pack and cannot provide heat dissipation for other battery packs arranged along the first direction.

[0006] In a first aspect, embodiments of this application provide a battery device, comprising: a battery assembly, the battery assembly including at least two sets of battery packs arranged along a first direction, the battery pack including individual battery cells; a first heat exchange assembly disposed between two adjacent sets of battery packs, the first heat exchange assembly being configured to exchange heat with the battery pack located on one side of the first heat exchange assembly, at least a portion of the structure at the edge of the first heat exchange assembly being folded to form a retaining edge structure, so that the first heat exchange assembly forms a receiving groove with an opening, the opening being disposed towards the battery pack on one side; and thermally conductive adhesive disposed in the receiving groove and thermally connecting the first heat exchange assembly and the battery pack.

[0007] In the above technical solution, by placing the first heat exchange component between two adjacent battery packs and configuring it to exchange heat with the battery pack located on one side of the first heat exchange component, heat dissipation can be achieved for multiple battery packs arranged along the first direction, thereby improving the performance, lifespan, and safety of the battery device. Simultaneously, by configuring the first heat exchange component with a receiving groove for accommodating thermally conductive adhesive, and placing the thermally conductive adhesive within the receiving groove and thermally connecting the first heat exchange component to the battery pack, the first heat exchange component not only exchanges heat with the battery pack but also has a function of limiting the position of the thermally conductive adhesive. This helps reduce the risk of displacement or overflow of the thermally conductive adhesive, thereby improving the thermal conductivity of the adhesive and reducing the risk of contamination of other components in the battery device by the thermally conductive adhesive, thus improving the performance of the battery device.

[0008] In some embodiments, the first heat exchange assembly includes a heat exchange body and a blocking member. The heat exchange body is disposed between two adjacent battery packs for heat exchange with the battery packs. The blocking member surrounds the outer periphery of the heat exchange body and protrudes toward one of the battery packs. The blocking member cooperates with the heat exchange body to define the receiving groove.

[0009] In the above technical solution, while enabling the first heat exchange component to effectively exchange heat with the battery pack, it is also possible to define a receiving groove for accommodating thermally conductive adhesive on the first heat exchange component and reduce the molding difficulty of the receiving groove, so as to use the first heat exchange component to limit the thermally conductive adhesive.

[0010] In some embodiments, in the first direction, the protrusion height of the blocking member ranges from 5mm to 10mm; and / or, in the second direction, the thickness of the blocking member ranges from 2mm to 5mm, wherein the second direction intersects the first direction.

[0011] In the above technical solution, while improving the blocking performance of the blocking component, the molding difficulty of the blocking component can also be reduced, thereby reducing the molding difficulty of the receiving groove. This makes it easier to limit the thermal conductive adhesive using the first heat exchange component, which helps to reduce the risk of displacement or overflow of the thermal conductive adhesive and improve the performance of the battery device.

[0012] In some embodiments, the heat exchange body includes a first heat exchange element and a second heat exchange element arranged along the first direction, a heat exchange space is formed between the first heat exchange element and the second heat exchange element, the heat exchange space is adapted to be filled with a heat exchange medium, the first heat exchange element is disposed between the second heat exchange element and the battery pack on one side, and the blocking member is connected to the outer periphery of the first heat exchange element and protrudes in a direction away from the second heat exchange element.

[0013] In the above technical solution, while reducing the difficulty of connecting the blocking component and the heat exchange body, it is also convenient to use the blocking component and the heat exchange body to define the receiving groove, further reducing the molding difficulty of the receiving groove.

[0014] In some embodiments, the blocking member and the first heat exchange member are integral parts.

[0015] The above technical solution can not only improve the processing efficiency of the blocking component, but also improve the structural strength of the blocking component, thereby enhancing the blocking performance of the blocking component on the thermally conductive adhesive.

[0016] In some embodiments, the receiving groove includes a connection region and an overflow region, the connection region being disposed opposite to the battery pack along the first direction, the overflow region extending beyond the battery pack along a direction perpendicular to the first direction, and a portion of the thermally conductive adhesive being contained in the overflow region.

[0017] The above technical solution helps to reduce the risk of excess thermal conductive adhesive overflowing to the outside of the barrier, thereby reducing the risk of thermal conductive adhesive contaminating other components inside the battery device and improving the performance of the battery device.

[0018] In some embodiments, the adhesive overflow area includes a plurality of regions, which are arranged at intervals.

[0019] In the above technical solution, multiple overflow areas are used in combination to reduce the risk of excess thermal conductive adhesive overflowing to the outside of the barrier, further reducing the risk of thermal conductive adhesive contaminating other components inside the battery device and improving the performance of the battery device.

[0020] In some embodiments, the battery device further includes a housing defining a mounting cavity, wherein the at least two battery packs are disposed within the mounting cavity, and the first heat exchange assembly is fixedly connected to the housing.

[0021] In the above technical solution, the first heat exchange component can be supported by the shell, thereby improving the positional stability of the first heat exchange component and thus enhancing its working performance.

[0022] In some embodiments, the housing includes a support beam disposed on opposite sides of the battery pack in a second direction, and a connecting plate is provided on the first heat exchange assembly, the connecting plate connecting the support beam, the second direction intersecting the first direction.

[0023] In the above technical solution, by connecting the connecting plate to the support beam, the first heat exchange component is fixedly connected to the shell, and the connection difficulty between the first heat exchange component and the shell is reduced, making it easier to use the shell to support the first heat exchange component and improving the positional stability of the first heat exchange component.

[0024] In some embodiments, the first heat exchange assembly includes a first heat exchange element and a second heat exchange element arranged at intervals along the first direction, a heat exchange space is formed between the first heat exchange element and the second heat exchange element, the heat exchange space is adapted to be filled with a heat exchange medium, the first heat exchange element is disposed between the second heat exchange element and the battery pack on one side, and the connecting plate is provided on the second heat exchange element.

[0025] In the above technical solution, a connecting plate can be set on the first heat exchange component, and the difficulty of fixing the connecting plate can be reduced, thereby facilitating the fixed connection between the first heat exchange component and the shell by using the connecting plate.

[0026] In some embodiments, the connecting plate and the second heat exchanger are integral parts.

[0027] In the above technical solution, not only can the processing efficiency of the connecting plate be improved, but the structural strength of the connecting plate can also be improved, thereby facilitating the fixed connection between the first heat exchange component and the shell using the connecting plate, and improving the connection strength between the first heat exchange component and the shell, thereby improving the positional stability of the first heat exchange component.

[0028] In some embodiments, the battery device further includes a support member, the receiving groove is provided on one side of the first heat exchange assembly, the support member is supported on the other side of the first heat exchange assembly and extends along the second direction, and the opposite ends of the support member are respectively connected to the support beam.

[0029] In the above technical solution, the first heat exchange component can be supported by a support member, thereby further improving the positional stability of the first heat exchange component.

[0030] In some embodiments, the two opposite ends of the support member are disposed between the connecting plate and the support beam and are fixedly connected to the connecting plate and the support beam, respectively.

[0031] In the above technical solution, the connecting plate, the support member and the support beam can be fixedly connected, thereby forming a fixed connection between the first heat exchange component, the support member and the shell. This facilitates the use of the shell and the support member to fix the first heat exchange component, maximizing the positional stability of the first heat exchange component.

[0032] In some embodiments, the support members include a plurality of supports arranged along a third direction, wherein the third direction, the second direction, and the first direction intersect each other.

[0033] In the above technical solution, the support effect of the support member on the first heat exchange component can be improved, thereby improving the positional stability of the first heat exchange component.

[0034] In some embodiments, the battery device further includes a second heat exchange assembly disposed on at least one side of the battery assembly in the first direction.

[0035] In the above technical solution, the second heat exchange component can be used to exchange heat with the battery pack located at the end of the battery module. This allows multiple battery packs in the battery module to be effectively cooled, which is beneficial to improving the working performance of the battery module.

[0036] In some embodiments, a heat exchange channel is formed within the first heat exchange component and / or the second heat exchange component, the heat exchange channel being used to guide the flow of the heat exchange medium.

[0037] In the above technical solution, the heat exchange medium can flow in a predetermined direction, which is beneficial to improving the uniformity of heat exchange between the heat exchange body and the battery module, and facilitates the improvement of the heat exchange effect of the first heat exchange component.

[0038] In some embodiments, the heat exchange channel includes a first heat exchange section, which includes a plurality of heat exchange segments arranged at intervals.

[0039] In the above technical solution, multiple heat exchange sections can be distributed in different locations to meet heat exchange requirements.

[0040] In some embodiments, the battery pack includes a plurality of battery cells arranged along a third direction, a plurality of heat exchange sections spaced apart along a second direction and each heat exchange section extending along the third direction, wherein the third direction, the second direction and the first direction intersect each other.

[0041] In the above technical solution, multiple battery cells in each battery pack can contact multiple heat exchange sections, and each heat exchange section can contact multiple battery cells, thereby making the heat exchange of multiple battery cells more uniform and improving the reliability of the battery assembly.

[0042] In some embodiments, the first heat exchange section further includes a bent section, the bent section being arc-shaped and bent and connected between two adjacent heat exchange sections.

[0043] In the above technical solution, the bending section can change the flow direction of the heat exchange medium, thereby allowing the two connected heat exchange sections to extend and be arranged within a preset area, which can increase the heat exchange area of ​​the first heat exchange section and improve the heat exchange efficiency of the first heat exchange section; at the same time, the arc shape of the bending section can reduce the flow resistance of the heat exchange medium and reduce the pressure drop, thereby increasing the flow rate of the heat exchange medium and further increasing the heat exchange efficiency of the first heat exchange section.

[0044] In some embodiments, the first heat exchange component and / or the second heat exchange component have an inlet and an outlet, the first heat exchange component being connected to the inlet and the outlet respectively, and the inlet and the outlet being respectively located on opposite sides of the first heat exchange component and / or the second heat exchange component.

[0045] The above technical solution facilitates the control of the heat exchange medium circulation within the heat exchange channel and reduces the risk of mutual interference between the inlet and outlet, thereby reducing the processing difficulty of the inlet and outlet.

[0046] In some embodiments, the heat exchange channel further includes a plurality of second heat exchange sections, each of which extends along a second direction and is connected to different heat exchange segments. Some of the second heat exchange sections are connected to the inlet, and another portion of the second heat exchange sections are connected to the outlet. The second direction intersects with the first direction.

[0047] The above technical solution can reduce the difficulty of connecting the first heat exchange section with the inlet and outlet.

[0048] Secondly, embodiments of this application provide an energy storage device, including the aforementioned battery device, which is used to store or provide electrical energy.

[0049] In the above technical solution, by adopting the aforementioned battery device, the working performance and safety of the energy storage device can be improved.

[0050] Thirdly, embodiments of this application provide an electrical device, including the aforementioned battery device or energy storage device, wherein the battery device is used to store or provide electrical energy.

[0051] In the above technical solution, by adopting the aforementioned battery device or energy storage device, the working performance of the electrical device can be improved, and the safety of the electrical device can also be improved.

[0052] Additional aspects and advantages of this application will become apparent from the description which follows, or may be learned by practice of this application. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of an electrical device according to some embodiments of this application;

[0055] Figure 2 This is a schematic diagram of an energy storage device according to some embodiments of this application;

[0056] Figure 3 Here is a simplified exploded view of a battery device according to some embodiments of this application;

[0057] Figure 4 This is an exploded view of a partial structure of a battery cell according to some embodiments of this application;

[0058] Figure 5 This is a schematic diagram of a battery device according to some embodiments of this application, with some parts of the structure omitted;

[0059] Figure 6 for Figure 5 A magnified view of region I in the middle;

[0060] Figure 7 This is a schematic diagram of one of the battery packs and a first heat exchange assembly according to some embodiments of this application;

[0061] Figure 8 for Figure 7 Enlarged view of region III;

[0062] Figure 9 This is a schematic diagram of a first heat exchange assembly according to some embodiments of this application;

[0063] Figure 10 for Figure 9 Enlarged view of region II;

[0064] Figure 11 An exploded view of a first heat exchange assembly and support member according to some embodiments of this application;

[0065] Figure 12 This is a schematic diagram of a heat exchange channel according to some embodiments of this application.

[0066] Figure label:

[0067] 2000, Electrical appliances;

[0068] 1000, Battery device;

[0069] 600. Battery components;

[0070] 100. Battery pack; 110. Battery cell; 111. Housing; 112. Electrode assembly;

[0071] 200. First heat exchange component;

[0072] 210. Receiving groove; 211. Connection area; 231. Glue overflow area;

[0073] 220. Heat exchanger body;

[0074] 221. First heat exchanger;

[0075] 222. Second heat exchanger;

[0076] 223. Heat exchange space;

[0077] 230. Blocking components;

[0078] 240. Connecting plate;

[0079] 400. Shell; 410. Mounting cavity; 430. Support beam; 450. Upper shell; 460. Lower shell;

[0080] 500. Support component; 510. Reinforcing rib;

[0081] 700. Heat exchange flow channel;

[0082] 710. First heat exchange section; 711. Heat exchange segment; 712. Bending segment;

[0083] 720. Second heat exchange section;

[0084] 810. Imports; 820. Exports;

[0085] 1100, Energy storage device; 1110, Energy storage box; 1200, Controller;

[0086] 1300, Motor. Detailed Implementation

[0087] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0088] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0089] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0090] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0091] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0092] In the embodiments of this application, the same reference numerals denote 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 this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0093] In this application, "multiple" means two or more, including two.

[0094] Currently, judging from market trends, the application of battery cells is becoming increasingly widespread. Battery cells are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace, among other fields.

[0095] As the application fields of battery cells continue to expand, the market demand for them is also constantly increasing.

[0096] The battery cell mentioned here can be a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery, or a magnesium-ion battery, etc., and this application embodiment is not limited to this. Similarly, the battery cell can be cylindrical, flat, cuboid, or other shapes, and this application embodiment is not limited to this either. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this application embodiment is not limited to this either.

[0097] For example, such as Figure 4 As shown, a battery cell 110 typically includes a housing, an electrode assembly 112, and an electrolyte. The housing is used to contain the electrode assembly 112 and the electrolyte, and the housing is provided with at least one positive electrode post and at least one negative electrode post. The electrode assembly 112 includes one or more, and the electrode assembly 112 is formed by stacking or winding a positive electrode sheet, a negative electrode sheet, and a separator.

[0098] In some embodiments, such as Figure 4 As shown, the housing includes a housing portion 111 and a top cover (not shown). The housing portion 111 has a receiving cavity with a top opening so that the housing portion 111 can accommodate the electrode assembly 112 and the electrolyte. The top cover is detachably connected to the opening of the housing portion 111 and is provided with at least one positive electrode post and at least one negative electrode post.

[0099] The positive electrode typically includes a positive current collector and a positive active material layer. The positive active material layer is directly or indirectly coated on the positive current collector, and multiple positive electrode tabs are stacked together and electrically connected to the positive electrode post. For example, the stacked positive electrode tabs can be directly welded to the positive electrode post to form an electrical connection; alternatively, the battery cell may also include a positive electrode adapter, with the stacked positive electrode tabs welded to one end of the adapter, and the other end of the adapter welded to the positive electrode post, thus forming an electrical connection between the positive electrode tabs and the positive electrode post.

[0100] The negative electrode generally includes a negative current collector and a negative active material layer. The negative active material layer is directly or indirectly coated on the negative current collector, and multiple negative electrode tabs are stacked together and electrically connected to the negative electrode post. For example, the stacked negative electrode tabs can be directly welded to the negative electrode post to form an electrical connection; alternatively, the battery cell may also include a negative electrode adapter piece, with the stacked negative electrode tabs welded to one end of the adapter piece, and the other end of the adapter piece welded to the negative electrode post, so that the negative electrode tabs and the negative electrode post form an electrical connection.

[0101] The material of the separator is not limited; for example, it can be polypropylene or polyethylene.

[0102] Among them, such as Figure 3As shown, battery device 1000 refers to a single physical module comprising multiple battery cells 110 to provide higher voltage and capacity. For example, battery device 1000 mentioned in this application may include one or more battery packs 100 for providing voltage and capacity. Battery pack 100 may include multiple battery cells 110, which are connected in series, parallel, or mixed connections via busbars.

[0103] In some embodiments, such as Figure 3 As shown, the battery pack 100 is typically formed by arranging multiple battery cells 110. As an example, the battery pack 100 can be a battery module, which is formed by arranging and fixing multiple battery cells 110 into a single module. As an example, a battery module can be formed by bundling multiple battery cells 110 together with cable ties.

[0104] In some embodiments, such as Figure 3 As shown, the battery device 1000 can be a battery pack. The battery device 1000 generally includes a housing 400 for encapsulating one or more battery packs 100. The housing 400 can, to a certain extent, prevent liquids or other foreign objects from affecting the charging or discharging of the individual battery cells 110. Of course, in some other embodiments, the battery device 1000 may not include the housing 400.

[0105] In some embodiments, such as Figure 3 As shown, the housing 400 defines the mounting cavity 410, and the battery device 1000 is disposed inside the housing 400 to support and protect the battery cell 110 by utilizing the housing 400. This not only improves the structural stability of the battery cell 110, but also extends the service life of the battery cell 110 and helps to improve the safety of the battery cell 110 in use.

[0106] The housing 400 can adopt various structures.

[0107] In some embodiments, such as Figure 3 As shown, the housing 400 may include an upper housing 450 and a lower housing 460, which cover each other. The upper housing 450 and the lower housing 460 together define a mounting cavity 410 for accommodating the battery pack 100, thereby reducing the molding difficulty of the housing 400 and making it easier to place the battery pack 100 inside the housing 400.

[0108] In this design, the upper housing 450 can be a hollow structure open at one end, and the lower housing 460 can be a plate-like structure. The lower housing 460 covers the open side of the upper housing 450 (not shown in the example figure), so that the upper housing 450 and the lower housing 460 together define the mounting cavity 410; or, the lower housing 460 can be a hollow structure open at one end, and the upper housing 450 can be a plate-like structure (not shown in the example figure). The upper housing 450 covers the open side of the lower housing 460, so that the upper housing 450 and the lower housing 460 can also cooperate to define the mounting cavity 410; or, as... Figure 3 As shown, both the upper housing 450 and the lower housing 460 are hollow structures with one side open. The open side of the upper housing 450 covers the open side of the lower housing 460 to define the mounting cavity 410.

[0109] It should be noted that the shell 400 formed by the upper shell 450 and the lower shell 460 can be of various shapes, such as a cylinder, a cube, or a cuboid; the battery cell 110 can be of various shapes, such as a cylinder or a square.

[0110] It is worth noting that, in order to dissipate heat from the battery pack, a water-cooling plate is usually installed at one end of the battery pack. The water-cooling plate is fixed to the battery pack with structural adhesive. This not only reduces the risk of the battery pack shifting in the battery pack's casing, but also allows the heat generated by the battery pack to be transferred to the water-cooling plate. The flow channels inside the water-cooling plate are connected to a cooling box, so that the heat generated by the battery pack can be carried away by the water-cooling plate, thereby dissipating the heat generated by the battery pack and achieving the purpose of heat dissipation.

[0111] Specifically, the water-cooling plate is usually placed on the lower half of the battery pack housing and on the bottom protective plate under the housing frame. The bottom protective plate is connected to the housing frame by welding or riveting. Therefore, the boundary of the water-cooling plate is determined by the housing frame. When the structural adhesive is applied, it flows naturally and is blocked by the frame beam. After the structural adhesive is placed and solidified, the battery cell, structural adhesive and water-cooling plate naturally form an integral and inseparable whole, which improves the heat dissipation effect of the water-cooling plate on the battery pack.

[0112] However, when the installation space for energy storage devices or electrical devices is limited in the horizontal direction and multiple battery packs in the battery device are arranged in a vertical direction, the above-mentioned heat dissipation method can only provide heat dissipation for the battery packs at the bottom, resulting in the other battery packs arranged in the vertical direction not being able to dissipate heat effectively, affecting the performance, lifespan and safety of the battery device.

[0113] To solve the above problems, combined with Figures 5-11As shown, this application embodiment provides a battery device 1000. The battery device 1000 has a first heat exchange component 200 between two adjacent battery packs 100, and the first heat exchange component 200 is configured to have a receiving groove 210 for accommodating thermally conductive adhesive. This not only enables effective heat dissipation for multiple battery packs 100 in the battery device 1000, but also limits the position of the thermally conductive adhesive, which helps to reduce the risk of displacement or overflow of the thermally conductive adhesive. This improves the thermal conductivity of the thermally conductive adhesive and reduces the risk of the thermally conductive adhesive contaminating other components in the battery device 1000, thereby improving the performance of the battery device 1000. This solves the technical problem that the heat dissipation component in the existing battery device 1000 can only provide heat dissipation for one battery pack 100 and cannot provide heat dissipation for other battery packs 100 arranged along the first direction.

[0114] This application embodiment also provides an energy storage device 1100 including the above-described battery device 1000, such as... Figure 2 As shown, the energy storage device 1100 also includes an energy storage box 1110, which contains a battery device 1000. The battery device 1000 is used to store or provide electrical energy, thereby improving the working performance of the energy storage device 1100 to a certain extent.

[0115] The energy storage device includes one or more battery clusters to increase its voltage and capacity. A battery cluster may include multiple battery units connected in series via a busbar to enhance the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, these clusters are connected in parallel to increase the capacity of the energy storage device.

[0116] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, energy storage devices can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours.

[0117] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0118] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0119] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device via piping to regulate the temperature of the individual battery cells.

[0120] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0121] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module includes modules such as the Insulation Monitoring Module (IMM), the Master Battery Management Unit (MBMU), the Ethernet (ETH) module, and the fiber optic conversion module.

[0122] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system.

[0123] As an example, a power distribution module can be used to distribute power to an energy storage device.

[0124] like Figure 1 As shown, this application embodiment also provides an electrical device 2000 including the above-described battery device 1000 or energy storage device 1100. The battery device 1000 is used to store or provide electrical energy so as to provide electrical energy to the electrical device 2000 and improve the working performance of the electrical device 2000 to a certain extent.

[0125] The electrical device 2000 mentioned here can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc.

[0126] Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric boat toys, and electric airplane toys; spacecraft can include airplanes, rockets, space shuttles, and spaceships; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0127] For ease of explanation, the following embodiments use a vehicle as an example to describe the structure of the electrical device 2000 of this application in detail.

[0128] Please refer to Figure 1 , Figure 1 The electrical device 2000 is shown as a vehicle. The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. The vehicle is equipped with a battery device 1000, which can be located at the bottom, front, or rear of the vehicle. The battery device 1000 can be used to power the vehicle; for example, the battery device 1000 can serve as the vehicle's operating power source.

[0129] In some embodiments, such as Figure 1 As shown, the vehicle may also include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery device 1000 to supply power to the motor 1300, for example, for the power needs of the vehicle during starting, navigation and driving.

[0130] In some embodiments of this application, the battery device 1000 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0131] The following description, with reference to the accompanying drawings, describes a battery device 1000 according to an embodiment of this application.

[0132] Combination Figure 5 , Figure 6 and Figure 8 As shown, the battery device 1000 includes a battery assembly 600, a first heat exchange assembly 200, and thermally conductive adhesive (not shown in the figure).

[0133] Among them, combined Figure 3 , Figure 5 and Figure 6 As shown, the battery assembly 600 includes at least two battery packs 100, which are arranged along a first direction. Each battery pack 100 includes individual battery cells 110. The first direction can be understood as... Figure 5 As shown in the Z direction, by arranging at least two battery packs 100 along the first direction, the space in the first direction can be fully utilized to increase the capacity of the battery device 1000, thereby improving the working performance of the battery device 1000.

[0134] The specific structure of the battery cell 110 can be found above and will not be repeated here.

[0135] Combination Figure 5 , Figure 6 and Figure 8As shown, the first heat exchange component 200 is disposed between two adjacent battery packs 100. The first heat exchange component 200 is configured to exchange heat with the battery pack 100 located on one side of the first heat exchange component 200. The first heat exchange component 200 forms a receiving groove 210 with an opening facing the battery pack 100 on one side. Thermally conductive adhesive is disposed in the receiving groove 210 and thermally connects the first heat exchange component 200 and the battery pack 100.

[0136] It should be noted that by configuring the first heat exchange component 200 to exchange heat with the battery pack 100 located on one side of the first heat exchange component 200, the temperature of the battery pack 100 can be adjusted so that the temperature of the battery pack 100 can be maintained within a suitable temperature range during operation. This not only improves the working performance and safety of the battery pack 100, but also extends the service life of the battery pack 100.

[0137] It is worth noting that in this application, the first heat exchange component 200 is configured to have a receiving groove 210 for accommodating thermally conductive adhesive, and the thermally conductive adhesive is disposed in the receiving groove 210 and thermally connected to the first heat exchange component 200 and the battery pack 100. This allows the first heat exchange component 200 to not only exchange heat with the battery pack 100, but also to use the receiving groove 210 to limit the thermally conductive adhesive, thereby reducing the risk of displacement or overflow of the thermally conductive adhesive. This improves the thermal conductivity of the thermally conductive adhesive and reduces the risk of the thermally conductive adhesive contaminating other components in the battery device 1000, further enhancing the performance of the battery device 1000.

[0138] Meanwhile, by setting the receiving groove 210 to have an opening facing the battery pack 100 on one side, the opening reduces the difficulty of filling the thermally conductive adhesive into the receiving groove 210, and also allows the thermally conductive adhesive in the receiving groove 210 to effectively conduct heat to the first heat exchange component 200 and the battery pack 100. The thermally conductive adhesive is mainly used to establish an efficient heat transfer channel to quickly transfer the heat generated by the battery cell 110 during operation to the first heat exchange component 200, so that the battery cell 110 can operate within the optimal temperature window.

[0139] In a specific example, by placing the thermally conductive adhesive inside the receiving groove 210, the first heat exchange component 200 can be used to prevent the overflow of the thermally conductive adhesive that has not fully solidified, thereby reducing the risk of the thermally conductive adhesive contaminating other components in the battery device 1000. It can also, to a certain extent, prevent the thermally conductive adhesive from affecting the sealing and safety of the battery device 1000. Furthermore, by using the first heat exchange component 200 to prevent the overflow of the thermally conductive adhesive that has not fully solidified, the thermally conductive adhesive can be accurately applied, reducing material waste and lowering the cost of using the thermally conductive adhesive.

[0140] Understandably, compared to the prior art, this application not only provides a first heat exchange component 200 between two adjacent battery packs 100, but also sets the first heat exchange component 200 to have a receiving groove 210 for accommodating thermally conductive adhesive. This allows the first heat exchange component 200 to not only exchange heat with the battery pack 100, but also to limit the position of the thermally conductive adhesive, thereby reducing the risk of displacement or overflow of the thermally conductive adhesive. This improves the thermal conductivity of the thermally conductive adhesive and reduces the risk of the thermally conductive adhesive contaminating other components in the battery device 1000, thus improving the performance of the battery device 1000.

[0141] In some embodiments, the battery device 1000 further includes a second heat exchange component (not shown), which is disposed on at least one side of the battery assembly 600 in the first direction. The second heat exchange component can be used to exchange heat with the battery pack 100 disposed at the end of the battery assembly 600, so that all the battery packs 100 in the battery assembly 600 can be effectively cooled, which is beneficial to improving the working performance of the battery assembly 600.

[0142] It should be noted that the second heat exchange component being disposed on at least one side of the battery assembly 600 in the first direction means that the second heat exchange component can be disposed on one side of the battery assembly 600 in the first direction, or it can be disposed on opposite sides of the battery assembly 600 in the first direction.

[0143] In some embodiments, the battery assembly 600 includes two battery packs 100, a first heat exchange assembly 200, and a second heat exchange assembly. The two battery packs 100 are arranged along a first direction. The second heat exchange assembly is disposed at the bottom of the battery assembly 600 and exchanges heat with the battery pack 100 located at the bottom of the battery assembly 600. The first heat exchange assembly 200 is disposed between two adjacent battery packs 100 and exchanges heat with the battery pack 100 located at the top of the battery assembly 600. This allows the two battery packs 100 in the battery device 1000 to be effectively cooled, thereby improving the heat dissipation performance of the battery device 1000.

[0144] In some implementations, the structures of the second heat exchange component and the first heat exchange component 200 may be the same or different, and no specific restrictions are imposed without application.

[0145] Specifically, when the bottom space of some vehicle models is irregular and narrow, the battery device 1000 is configured to include two battery packs 100, a first heat exchange component 200 and a second heat exchange component. The two battery packs 100 are arranged vertically. The second heat exchange component is located at the bottom of the battery device 1000 and exchanges heat with the battery pack 100 located at the bottom of the battery device 1000. The first heat exchange component 200 is located between two adjacent battery packs 100 and exchanges heat with the battery pack 100 located at the top of the battery device 1000. The first heat exchange component 200 defines a receiving groove 210 for accommodating thermally conductive adhesive, so that the two battery packs 100 in the battery device 1000 can be effectively cooled.

[0146] It should be noted that the second heat exchange component may not have a receiving groove 210. The housing 400 of the battery device 1000 can be used to limit the thermal conductive adhesive, which can also reduce the risk of displacement or overflow of the thermal conductive adhesive.

[0147] Furthermore, the first heat exchange component 200 located between two adjacent battery packs 100 can simultaneously exchange heat with the battery packs 100 located on both sides of the first heat exchange component 200. This allows the battery pack 100 located at the bottom of the battery device 1000 to exchange heat with both first heat exchange components 200 at the same time, enabling the battery pack 100 to operate within the optimal temperature window.

[0148] In some embodiments, combined with Figure 9 and Figure 10 As shown, the first heat exchange assembly 200 includes a heat exchange body 220 and a blocking member 230. The heat exchange body 220 is disposed between two adjacent battery packs 100 for heat exchange with the battery packs 100. The blocking member 230 surrounds the outer periphery of the heat exchange body 220 and protrudes towards one of the battery packs 100. The blocking member 230 cooperates with the heat exchange body 220 to define a receiving groove 210. By disposing the heat exchange body 220 between two adjacent battery packs 100 for heat exchange with the battery packs 100, heat exchange between the first heat exchange assembly 200 and the battery packs 100 is achieved, reducing the difficulty of heat exchange between the first heat exchange assembly 200 and the battery packs 100, thereby ensuring that the temperature of the battery packs 100 can be maintained within a suitable temperature range during operation.

[0149] Meanwhile, by using the blocking member 230 to cooperate with the heat exchange body 220 to define the receiving groove 210, the molding difficulty of the receiving groove 210 can be reduced, so as to use the first heat exchange component 200 to limit the thermal conductive adhesive.

[0150] In some embodiments, the protrusion height of the blocking member 230 in the first direction ranges from 5mm to 10mm. When the protrusion height of the blocking member 230 in the first direction is too low, its blocking effect on the thermally conductive adhesive is reduced, leading to a risk of displacement or overflow of the thermally conductive adhesive. Conversely, when the protrusion height of the blocking member 230 in the first direction is too high, it increases the molding difficulty of the blocking member 230.

[0151] Based on this, this application sets the value range of the protrusion height of the blocking member 230 in the first direction to 5mm~10mm. While improving the blocking effect of the blocking member 230 on the thermal conductive adhesive, it can also reduce the molding difficulty of the blocking member 230, thereby reducing the molding difficulty of the receiving groove 210. This makes it easier to limit the thermal conductive adhesive using the first heat exchange component 200, thereby reducing the risk of displacement or overflow of the thermal conductive adhesive and improving the performance of the battery device 1000.

[0152] In a specific example, the protrusion height of the blocking member 230 in the first direction is 5mm, 6mm, 7mm, 8mm, 9mm or 10mm.

[0153] In some embodiments, the thickness of the blocking member 230 in the second direction ranges from 2mm to 5mm, and the second direction intersects with the first direction. Here, the second direction can be understood as... Figure 9 As shown in the Y direction, when the thickness of the blocking member 230 in the second direction is too thin, the structural strength of the blocking member 230 will be reduced, thereby reducing the blocking effect of the blocking member 230 on the thermal conductive adhesive, resulting in the risk of displacement or overflow of the thermal conductive adhesive; when the thickness of the blocking member 230 in the second direction is too thick, it will increase the molding difficulty of the blocking member 230.

[0154] Based on this, this application sets the thickness of the blocking member 230 in the second direction to a range of 2mm to 5mm, which not only improves the blocking effect of the blocking member 230 on the thermally conductive adhesive, but also reduces the molding difficulty of the blocking member 230.

[0155] In a specific example, the thickness of the blocking member 230 in the second direction is 2mm, 3mm, 4mm or 5mm.

[0156] Of course, in specific examples, the height and thickness of the blocking component 230 can be designed according to actual needs. The design of the blocking component 230 needs to take into account the setting range of the thermal conductive adhesive, the installation position of the battery pack 100, and the heat dissipation requirements of the first heat exchange component 200.

[0157] In some embodiments, combined with Figure 9 and Figure 11As shown, the heat exchange body 220 includes a first heat exchange element 221 and a second heat exchange element 222 arranged along a first direction. A heat exchange space 223 is formed between the first heat exchange element 221 and the second heat exchange element 222, and the heat exchange space 223 is suitable for filling with a heat exchange medium. This allows the heat exchange body 220 to be filled with a heat exchange medium, reducing the difficulty of filling the heat exchange medium. The heat exchange medium is used to improve the heat exchange performance of the heat exchange body 220, enabling the heat exchange body 220 to effectively exchange heat with the battery pack 100, thereby improving the performance, lifespan, and safety of the battery device 1000.

[0158] The heat exchange medium mentioned here can be water, coolant, etc.

[0159] In some embodiments, such as Figure 11 As shown, the heat exchange space 223 is connected to an external cooling medium circulation system. The heat exchange space 223 is provided with a heat exchange channel 700. The heat exchange channel 700 can limit the flow direction of the heat exchange medium so that the heat exchange medium can flow in a predetermined direction, thereby improving the uniformity of heat exchange between the heat exchange body 220 and the battery pack 100 and improving the heat exchange effect of the first heat exchange component 200.

[0160] In some embodiments, such as Figure 11 and Figure 12 As shown, a heat exchange channel 700 is formed within the first heat exchange component 200 and / or the second heat exchange component. The heat exchange channel 700 is used to guide the flow of the heat exchange medium. This means that the heat exchange channel 700 is formed within the first heat exchange component 200; or, the heat exchange channel 700 is formed within the second heat exchange component; or, both the first heat exchange component 200 and the second heat exchange component have heat exchange channels 700 formed. By using the heat exchange channel 700 to guide the flow of the heat exchange medium, the uniformity of heat exchange between the heat exchange body 220 and the battery pack 100 is improved.

[0161] In some embodiments, when a heat exchange channel 700 is formed within the first heat exchange component 200, such as Figure 11 As shown, the heat exchange channel 700 is provided on at least one of the first heat exchanger 221 and the second heat exchanger 222.

[0162] In a specific example, the first heat exchanger 221 and the second heat exchanger 222 are made by stamping, and the heat exchange channel 700 can be machined by CNC milling. Because the stamping process has the advantages of high processing efficiency, low cost and high material utilization, it can significantly improve the production efficiency of the heat exchanger body 220.

[0163] Optionally, the first heat exchanger 221 and / or the second heat exchanger 222 are made of aluminum alloy. Aluminum alloy has good thermal conductivity and corrosion resistance, thereby improving the thermal conductivity of the first heat exchanger 200 and making it easier to meet the heat dissipation requirements of the battery device 1000.

[0164] In some embodiments, combined with Figure 5 , Figure 6 and Figure 11 As shown, the first heat exchanger 221 is disposed between the second heat exchanger 222 and the battery pack 100 on one side. The blocking member 230 is connected to the outer periphery of the first heat exchanger 221 and protrudes in a direction away from the second heat exchanger 222. By connecting the blocking member 230 to the outer periphery of the first heat exchanger 221, the connection difficulty between the blocking member 230 and the heat exchange body 220 can be reduced. At the same time, by setting the blocking member 230 to protrude in a direction away from the second heat exchanger 222, the blocking member 230 can surround the outer periphery of the heat exchange body 220 and protrude towards the battery pack 100 on one side. This allows the blocking member 230 and the heat exchange body 220 to cooperate in defining the receiving groove 210, further reducing the molding difficulty of the receiving groove 210, so as to facilitate the use of the first heat exchange assembly 200 to limit the thermally conductive adhesive.

[0165] In some embodiments, the blocking member 230 and the first heat exchanger 221 are integrally formed. This can also be understood as the blocking member 230 and the first heat exchanger 221 being manufactured using an integral processing technology, which not only improves the processing efficiency of the blocking member 230, but also improves the structural strength and durability of the blocking member 230, thereby enhancing the blocking performance of the blocking member 230 against the thermally conductive adhesive. At the same time, it also improves the sealing performance of the connection between the blocking member 230 and the first heat exchanger 221, so that the blocking member 230 can effectively prevent the thermally conductive adhesive from shifting or overflowing.

[0166] Optionally, the barrier 230 is formed by stamping so that the barrier 230 and the first heat exchanger 221 are integrated into one piece.

[0167] Meanwhile, stamping is a mature processing technology with advantages such as high processing precision and good surface quality, which can improve the reliability and stability of the blocking component 230.

[0168] In a specific example, during the processing of the first heat exchanger 221, a certain width of plate can be reserved at the edge of the first heat exchanger 221. The reserved plate is then folded upwards by a stamping process to form a baffle structure, which is then formed as the blocking member 230.

[0169] Of course, in some other embodiments, the blocking member 230 and the first heat exchanger 221 can also be separate parts. After the blocking member 230 and the first heat exchanger 221 are processed and formed separately, the blocking member 230 and the first heat exchanger 221 can be welded or riveted together to connect the blocking member 230 to the outer periphery of the first heat exchanger 221.

[0170] In some other embodiments, the blocking member 230 may also be connected to the outer periphery of the second heat exchanger 222 and protrude toward and out of the first heat exchanger 221. This also allows the blocking member 230 to surround the outer periphery of the heat exchange body 220 and protrude toward one side of the battery pack 100, thereby defining the receiving groove 210 by the cooperation of the blocking member 230 and the heat exchange body 220.

[0171] The connection method between the blocking member 230 and the second heat exchanger 222 can be referred to the connection method between the blocking member 230 and the first heat exchanger 221, and will not be described in detail here.

[0172] In some other embodiments, both the outer periphery of the second heat exchanger 222 and the outer periphery of the first heat exchanger 221 may be provided with blocking members 230. The blocking member 230 located on the outer periphery of the second heat exchanger 222 is sleeved on the blocking member 230 located on the outer periphery of the first heat exchanger 221 and the two blocking members 230 are connected to each other. This also allows the blocking member 230 to surround the outer periphery of the heat exchange body 220 and protrude toward the battery pack 100 on one side.

[0173] In some embodiments, combined with Figures 7-10 As shown, the receiving groove 210 includes a connecting region 211 and an overflow region 231. The connecting region 211 is disposed opposite to the battery pack 100 along a first direction, and the overflow region 231 extends beyond the battery pack 100 in a direction perpendicular to the first direction. A portion of the thermally conductive adhesive is contained in the overflow region 231. In other words, the overflow region 231 can be used to contain excess thermally conductive adhesive and contain it at a position beyond the battery pack 100, thereby preventing excess thermally conductive adhesive from overflowing to the outside of the blocking member 230 to a certain extent. This, in turn, prevents the thermally conductive adhesive from contaminating other components within the battery device 1000 and improves the performance of the battery device 1000.

[0174] It should be noted that the direction perpendicular to the first direction can be understood as... Figure 9 The X and Y directions are shown.

[0175] In some embodiments, combined with Figure 9 and Figure 10 As shown, the overflow area 231 is defined by a partial blocking member 230 protruding in a direction away from the receiving groove 210. This reduces the molding difficulty of the overflow area 231.

[0176] Of course, in some other embodiments, a groove recessed towards the outer surface of the blocking member 230 can also be formed on the inner surface of the blocking member 230, so as to define an overflow area 231 that connects to the receiving groove 210 on the inner surface of the blocking member 230, thereby reducing the molding difficulty of the overflow area 231.

[0177] In some embodiments, combined with Figure 9 and Figure 10 As shown, the overflow area 231 includes multiple areas, which are arranged at intervals. The multiple overflow areas 231 work together to prevent excess thermally conductive adhesive from overflowing to the outside of the barrier 230, further reducing the risk of thermally conductive adhesive contaminating other components within the battery device 1000 and improving the performance of the battery device 1000.

[0178] In some embodiments, combined with Figure 3 and Figure 5 As shown, the battery device 1000 also includes a housing 400, which defines a mounting cavity 410. At least two battery packs 100 are disposed within the mounting cavity 410, and the first heat exchange component 200 is fixedly connected to the housing 400. By placing at least two battery packs 100 within the mounting cavity 410, the battery packs 100 are housed within the housing 400. This allows the housing 400 to support and protect the battery packs 100 when subjected to external impacts or vibrations. This improves the structural stability of the battery packs 100, extends their service life, and enhances their safety during use.

[0179] Meanwhile, by fixing the first heat exchange component 200 to the housing 400, the housing 400 is used to support the first heat exchange component 200, thereby improving the positional stability of the first heat exchange component 200 and ensuring the working performance of the first heat exchange component 200.

[0180] In some embodiments, combined with Figure 5 , Figure 7 and Figure 9 As shown, the housing 400 includes support beams 430, which are disposed on opposite sides of the battery pack 100 in the second direction. A connecting plate 240 is provided on the first heat exchange assembly 200, connecting the support beams 430. The second direction intersects the first direction. By distributing the support beams 430 on opposite sides of the battery pack 100 in the second direction, the battery pack 100 can be supported using the support beams 430, thereby improving the positional stability of the battery pack 100.

[0181] Meanwhile, by setting a connecting plate 240 on the first heat exchange component 200 to connect the support beam 430, the fixed connection between the first heat exchange component 200 and the shell 400 can be achieved, and the connection difficulty between the first heat exchange component 200 and the shell 400 can be reduced, so that the first heat exchange component 200 and the shell 400 can be assembled together, thereby facilitating the use of the shell 400 to support the first heat exchange component 200 and improving the positional stability of the first heat exchange component 200.

[0182] The connection between the connecting plate 240 and the support beam 430 can be achieved by welding, bonding, or bolting.

[0183] In some embodiments, combined with Figure 5 , Figure 7 and Figure 11 As shown, the first heat exchange assembly 200 includes a first heat exchange element 221 and a second heat exchange element 222 arranged at intervals along a first direction. A heat exchange space 223 is formed between the first heat exchange element 221 and the second heat exchange element 222. The heat exchange space 223 is suitable for filling with a heat exchange medium. The first heat exchange element 221 is disposed between the second heat exchange element 222 and a battery pack 100 on one side. A connecting plate 240 is provided on the second heat exchange element 222. This arrangement of the connecting plate 240 on the first heat exchange assembly 200 reduces the difficulty of fixing the connecting plate 240, thereby facilitating the fixed connection between the first heat exchange assembly 200 and the housing 400 using the connecting plate 240.

[0184] In some embodiments, the connecting plate 240 and the second heat exchanger 222 are integrally formed. This can also be understood as the connecting plate 240 and the second heat exchanger 222 being manufactured using an integral forming process. This improves the connection strength between the connecting plate 240 and the second heat exchanger 222 while also increasing the processing efficiency of the connecting plate 240. This facilitates the fixed connection between the first heat exchanger assembly 200 and the housing 400 using the connecting plate 240, and enhances the connection strength between the first heat exchanger assembly 200 and the housing 400, thereby improving the positional stability of the first heat exchanger assembly 200.

[0185] Optionally, the connecting plate 240 is formed by stamping so that the connecting plate 240 and the second heat exchanger 222 are integrated into one piece; at the same time, stamping is a mature processing technology with advantages such as high processing accuracy and good surface quality, which can improve the reliability and stability of the connecting plate 240.

[0186] In some other embodiments, the connecting plate 240 and the second heat exchanger 222 can also be separate parts. After the connecting plate 240 and the second heat exchanger 222 are individually processed and formed, they can be connected together by welding, bonding or other methods, which can also improve the connection strength between the connecting plate 240 and the second heat exchanger 222.

[0187] In some other embodiments, the connecting plate 240 may also be provided on the first heat exchanger 221, or simultaneously on the first heat exchanger 221 and the second heat exchanger 222, without any specific limitation.

[0188] In specific examples, such as Figure 11As shown, the first heat exchange component 200 has a blocking member 230 and a connecting plate 240. The blocking member 230 is connected to the first heat exchange component 221 and the two can be formed as one piece. The connecting plate 240 is connected to the second heat exchange component 222 and the two can be formed as one piece. This allows the blocking member 230 and the connecting plate 240 to be on different heat exchange components, thereby avoiding interference between the blocking member 230 and the connecting plate 240 to a certain extent. This not only improves the working performance of the blocking member 230 and the connecting plate 240, but also reduces the molding difficulty of the blocking member 230 and the connecting plate 240.

[0189] In some embodiments, combined with Figure 5 and Figure 11 As shown, the battery device 1000 also includes a support member 500. A receiving groove 210 is provided on one side of the first heat exchange component 200. The support member 500 is supported on the other side of the first heat exchange component 200 and extends along a second direction. Support beams 430 are connected to opposite ends of the support member 500. By supporting the support member 500 on the other side of the first heat exchange component 200 and extending it along the second direction, interference between the support member 500 and the receiving groove 210 is avoided to a certain extent. Simultaneously, the support member 500 supports the first heat exchange component 200, improving the positional stability of the first heat exchange component 200 and thus enhancing its performance.

[0190] Meanwhile, by connecting the support beams 430 to the opposite ends of the support member 500, the support member 500 can be supported by the support beams 430. This reduces the difficulty of fixing the support member 500 and improves the positional stability of the support member 500, thereby enhancing the working performance of the support member 500.

[0191] The support member 500 and the support beam 430 are fixedly connected by welding, bonding or bolting.

[0192] In a specific example, by setting the support member 500 to support the other side of the first heat exchange component 200 and extend along the second direction, the collapse of the middle part of the first heat exchange component 200 in the second direction can be avoided to a certain extent, thereby improving the structural stability of the first heat exchange component 200. It can also avoid damage to the heat exchange channel 700 to a certain extent, thereby improving the heat exchange performance of the first heat exchange component 200.

[0193] In some embodiments, such as Figure 11 As shown, the support member 500 is provided with multiple reinforcing ribs 510. The multiple reinforcing ribs 510 can enhance the structural strength of the support member 500, making it easier to use the support member 500 to stably support the first heat exchange component 200, thereby improving the support performance of the support member 500.

[0194] In some embodiments, combined with Figure 5, Figure 7 and Figure 11 As shown, the two ends of the support member 500 are respectively located between the connecting plate 240 and the support beam 430 and are fixedly connected to the connecting plate 240 and the support beam 430. This allows the connecting plate 240, the support member 500, and the support beam 430 to form a fixed connection, thereby forming a fixed connection between the first heat exchange component 200, the support member 500, and the shell 400. This facilitates the use of the shell 400 and the support member 500 to fix the first heat exchange component 200, maximizing the positional stability of the first heat exchange component 200.

[0195] Of course, in some other embodiments, the two ends of the support member 500 may not be located between the connecting plate 240 and the support beam 430, and no specific restrictions are imposed here.

[0196] In some embodiments, the battery device 1000 further includes fasteners (not shown in the figure), which pass through the connecting plate 240, the support member 500 and the support beam 430 in sequence to fix them in place, so that the opposite ends of the support member 500 can be fixedly connected to the connecting plate 240 and the support beam 430 respectively, and the difficulty of fixing them in place is reduced.

[0197] Alternatively, the fastener may be a bolt or screw, etc.

[0198] Of course, in other embodiments, the support member 500 may also be bonded or snapped to the connecting plate 240 and the support beam 430 respectively, and no specific limitation is made here.

[0199] In some embodiments, such as Figure 11 As shown, the support member 500 includes multiple members, which are arranged along a third direction. The third direction, the second direction, and the first direction intersect each other in pairs. Here, the third direction can be understood as... Figure 11 As shown in the X direction, the above-mentioned settings can improve the support effect of the support member 500 on the first heat exchange component 200, thereby improving the positional stability of the first heat exchange component 200.

[0200] In some embodiments, such as Figure 12 As shown, the heat exchange channel 700 includes a first heat exchange section 710, which includes multiple heat exchange segments 711 arranged at intervals. This allows the heat exchange channel 700 to be distributed at different locations on the first heat exchange assembly 200 and / or the second heat exchange assembly to meet heat exchange requirements.

[0201] In some embodiments, the battery pack 100 includes a plurality of battery cells 110 arranged along a third direction, such as Figure 12As shown, multiple heat exchange sections 711 are arranged at intervals along the second direction, and each heat exchange section 711 extends along a third direction. The third direction, the second direction, and the first direction intersect each other. This allows multiple battery cells 110 in each battery pack 100 to contact multiple heat exchange sections 711, and allows each heat exchange section 711 to contact multiple battery cells 110, thereby making the heat exchange of the multiple battery cells 110 more uniform and improving the reliability of the battery assembly 600.

[0202] In some embodiments, such as Figure 12 As shown, the first heat exchange section 710 also includes a bent section 712, which is arc-shaped and bends to connect two adjacent heat exchange sections 711. The arc shape of the bent section 712 can be understood as the bent section 712 extending along an arc, causing the flow direction of the heat exchange medium at both ends of the bent section 712 to have a certain angle. This allows the bent section 712 to change the flow direction of the heat exchange medium, thereby enabling the two connected heat exchange sections 711 to extend and arrange within a predetermined area, thus increasing the heat exchange area of ​​the first heat exchange section 710 and improving its heat exchange efficiency.

[0203] Meanwhile, the arc shape of the bending section 712 can reduce the flow resistance of the heat exchange medium and reduce the pressure drop, thereby increasing the flow rate of the heat exchange medium and further increasing the heat exchange efficiency of the first heat exchange section 710.

[0204] In some embodiments, such as Figure 12 As shown, the first heat exchange component 200 and / or the second heat exchange component have an inlet 810 and an outlet 820. The first heat exchange section 710 is connected to both the inlet 810 and the outlet 820, which are respectively located on opposite sides of the first heat exchange component 200 and / or the second heat exchange component. By configuring the first heat exchange section 710 to be connected to both the inlet 810 and the outlet 820, it is convenient to deliver the heat exchange medium to the first heat exchange section 710 via the inlet 810 and to discharge the heat exchange medium from the first heat exchange section 710 via the outlet 820. This facilitates the circulation of the heat exchange medium within the first heat exchange section 710, making it easier to adjust the temperature of the heat exchange medium so that it can be maintained within a suitable heat exchange temperature range, thereby improving the heat exchange effect between the first heat exchange component 200 and / or the second heat exchange component and the battery pack 100.

[0205] Meanwhile, by setting the inlet 810 and outlet 820 on opposite sides of the first heat exchange component 200 and / or the second heat exchange component, the risk of interference between the inlet 810 and outlet 820 can be reduced, which is conducive to reducing the processing difficulty of the inlet 810 and outlet 820.

[0206] It should be noted that the inlet 810 and outlet 820 being located on opposite sides of the first heat exchange component 200 and / or the second heat exchange component means that when the inlet 810 and outlet 820 are both located on the first heat exchange component 200, the inlet 810 and outlet 820 are located on opposite sides of the first heat exchange component 200; and when the inlet 810 and outlet 820 are both located on the second heat exchange component, the inlet 810 and outlet 820 are located on opposite sides of the second heat exchange component.

[0207] In specific examples, such as Figure 12 As shown, the heat exchange section 711 of the first heat exchange unit 710 extends along the third direction, and the inlet 810 and outlet 820 are respectively located on opposite sides of the first heat exchange component 200 in the third direction, reducing the difficulty of connecting the first heat exchange unit 710 with the inlet 810 and outlet 820.

[0208] In some embodiments, such as Figure 12 As shown, the heat exchange channel 700 also includes multiple second heat exchange sections 720, each extending along a second direction. These sections are connected to different heat exchange segments 711. Some second heat exchange sections 720 are connected to the inlet 810, while others are connected to the outlet 820. The second direction intersects with the first direction. This allows the second heat exchange sections 720 to facilitate the connection between the first heat exchange section 710 and the inlet 810 and outlet 820, reducing the difficulty of achieving this connection.

[0209] Meanwhile, by setting the second heat exchange section 720 to extend in the second direction, the second heat exchange section 720 and the first heat exchange section 710 can cover different positions, further meeting the heat exchange requirements.

[0210] The energy storage device 1100 of this application is described below with reference to the accompanying drawings.

[0211] like Figure 2 As shown, the energy storage device 1100 of this application embodiment includes the battery device 1000 of the above embodiment.

[0212] Since the battery device 1000 of this application embodiment has the above-mentioned technical effects, the energy storage device 1100 of this application embodiment also has the above-mentioned technical effects. That is, by adopting the battery device 1000 of this application, the working performance of the energy storage device 1100 can be improved, and the safety of the energy storage device 1100 can also be improved.

[0213] The following description of an embodiment of the electrical device 2000 of this application is based on the accompanying drawings.

[0214] like Figure 1As shown, the power-consuming device 2000 of this application embodiment includes the battery device 1000 or energy storage device 1100 of the above embodiments, and the battery device 1000 is used to store or provide electrical energy.

[0215] Since the battery device 1000 or energy storage device 1100 of the present application embodiment has the above-mentioned technical effects, the power consumption device 2000 of the present application embodiment also has the above-mentioned technical effects. That is, by adopting the battery device 1000 or energy storage device 1100 of the present application, the working performance of the power consumption device 2000 can be improved, and the safety of the power consumption device 2000 can also be improved.

[0216] It is understood that the specific structures of other components of the battery device 1000, energy storage device 1100 and power consumption device 2000 according to the embodiments of this application, such as controller 1200, motor 1300, etc., are known to those skilled in the art and will not be described in detail here.

[0217] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0218] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, characterized in that, include: A battery assembly (600) comprising at least two battery packs (100) arranged along a first direction, the battery packs (100) comprising individual battery cells (110). A first heat exchange assembly (200) is disposed between two adjacent battery packs (100). The first heat exchange assembly (200) is configured to exchange heat with a battery pack (100) located on one side of the first heat exchange assembly (200). At least a portion of the structure at the edge of the first heat exchange assembly (200) is folded to form a retaining structure, so that the first heat exchange assembly (200) forms a receiving groove (210) with an opening facing the battery pack (100) on one side. Thermally conductive adhesive is disposed in the receiving groove (210) and thermally connects the first heat exchange component (200) and the battery pack (100).

2. The battery device according to claim 1, characterized in that, The first heat exchange assembly (200) includes a heat exchange body (220) and a blocking member (230). The heat exchange body (220) is disposed between two adjacent sets of the battery packs (100) for heat exchange with the battery packs (100). The blocking member (230) surrounds the outer periphery of the heat exchange body (220) and protrudes toward one side of the battery pack (100). The blocking member (230) cooperates with the heat exchange body (220) to define the receiving groove (210).

3. The battery device according to claim 2, characterized in that, In the first direction, the protrusion height of the blocking member (230) ranges from 5mm to 10mm; and / or, in the second direction, the thickness of the blocking member (230) ranges from 2mm to 5mm, and the second direction intersects with the first direction.

4. The battery device according to claim 2, characterized in that, The heat exchange body (220) includes a first heat exchange element (221) and a second heat exchange element (222) arranged along the first direction. A heat exchange space (223) is formed between the first heat exchange element (221) and the second heat exchange element (222). The heat exchange space (223) is suitable for filling with a heat exchange medium. The first heat exchange element (221) is disposed between the second heat exchange element (222) and the battery pack (100) on one side. The blocking member (230) is connected to the outer periphery of the first heat exchange element (221) and protrudes in a direction away from the second heat exchange element (222).

5. The battery device according to claim 4, characterized in that, The blocking component (230) and the first heat exchange component (221) are an integral part.

6. The battery device according to claim 1, characterized in that, The receiving groove (210) includes a connecting area (211) and an overflow area (231). The connecting area (211) is disposed opposite to the battery pack (100) along the first direction, and the overflow area (231) extends beyond the battery pack (100) in a direction perpendicular to the first direction. A portion of the thermally conductive adhesive is contained in the overflow area (231).

7. The battery device according to claim 6, characterized in that, The glue overflow area (231) is multiple, and the multiple glue overflow areas (231) are arranged at intervals.

8. The battery device according to any one of claims 1-7, characterized in that, It also includes a housing (400) that defines a mounting cavity (410) in which at least two battery packs (100) are disposed, and the first heat exchange assembly (200) is fixedly connected to the housing (400).

9. The battery device according to claim 8, characterized in that, The housing (400) includes a support beam (430) which is disposed on opposite sides of the battery pack (100) in a second direction. A connecting plate (240) is provided on the first heat exchange assembly (200) which connects to the support beam (430). The second direction intersects the first direction.

10. The battery device according to claim 9, characterized in that, The first heat exchange assembly (200) includes a first heat exchange element (221) and a second heat exchange element (222) arranged at intervals along the first direction. A heat exchange space (223) is formed between the first heat exchange element (221) and the second heat exchange element (222). The heat exchange space (223) is suitable for being filled with a heat exchange medium. The first heat exchange element (221) is disposed between the second heat exchange element (222) and the battery pack (100) on one side. The second heat exchange element (222) is provided with the connecting plate (240).

11. The battery device according to claim 10, characterized in that, The connecting plate (240) and the second heat exchanger (222) are an integral part.

12. The battery device according to claim 10, characterized in that, It also includes a support member (500), on one side of the first heat exchange assembly (200) the receiving groove (210) is provided, the support member (500) is supported on the other side of the first heat exchange assembly (200) and extends along the second direction, and the opposite ends of the support member (500) are respectively connected to the support beam (430).

13. The battery device according to claim 12, characterized in that, The two ends of the support member (500) are located between the connecting plate (240) and the support beam (430) and are fixedly connected to the connecting plate (240) and the support beam (430) respectively.

14. The battery device according to claim 12, characterized in that, The support member (500) includes a plurality of members, which are arranged along a third direction, and the third direction, the second direction, and the first direction intersect each other.

15. The battery device according to claim 1, characterized in that, It also includes a second heat exchange assembly disposed on at least one side of the battery assembly (600) in the first direction.

16. The battery device according to claim 15, characterized in that, The first heat exchange component (200) and / or the second heat exchange component have heat exchange channels (700) formed therein, the heat exchange channels (700) being used to guide the flow of heat exchange medium.

17. The battery device according to claim 16, characterized in that, The heat exchange channel (700) includes a first heat exchange section (710), which includes a plurality of heat exchange segments (711) arranged at intervals.

18. The battery device according to claim 17, characterized in that, The battery pack (100) includes a plurality of battery cells (110) arranged along a third direction, and a plurality of heat exchange sections (711) are spaced apart along a second direction, with each heat exchange section (711) extending along the third direction. The third direction, the second direction, and the first direction intersect each other.

19. The battery device according to claim 18, characterized in that, The first heat exchange section (710) further includes a bent section (712), which is arc-shaped and bent and connected between two adjacent heat exchange sections (711).

20. The battery device according to claim 17, characterized in that, The first heat exchange component (200) and / or the second heat exchange component have an inlet (810) and an outlet (820), the first heat exchange section (710) is connected to the inlet (810) and the outlet (820) respectively, and the inlet (810) and the outlet (820) are respectively located on opposite sides of the first heat exchange component (200) and / or the second heat exchange component.

21. The battery device according to claim 20, characterized in that, The heat exchange channel (700) further includes a plurality of second heat exchange sections (720), each of which extends along a second direction. The plurality of second heat exchange sections (720) are respectively connected to different heat exchange segments (711). Some of the second heat exchange sections (720) are connected to the inlet (810), and another part of the second heat exchange sections (720) are connected to the outlet (820). The second direction intersects with the first direction.

22. An energy storage device, characterized in that, It includes a plurality of battery devices according to any one of claims 1-21, the battery devices being used to store or provide electrical energy.

23. An electrical appliance, characterized in that, Includes a battery device according to any one of claims 1-21 or an energy storage device according to claim 22, wherein the battery device is used to store or provide electrical energy.

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