Battery device, energy storage device, energy storage system and charging network

Abstract

The utility model discloses a battery device, an energy storage device, an energy storage system and a charging network, and relates to the technical field of batteries, the battery device comprises an isolation plate, a plurality of connecting sheets, a plurality of battery cells and a flat cable, the number of the connecting sheets and the number of the battery cells are both multiple, and the connecting sheets are connected with the isolation plate. The battery cells are electrically connected with the connecting sheets, and each connecting sheet is electrically connected with at least one battery cell. And the flat cable is connected with the isolation plate and is electrically connected with the connecting sheet. As the flat cable is of an integrated design structure, the problem that a plurality of wire harnesses cannot be stably fixed due to mutual displacement in related technologies is not easy to occur, so that the flat cable is conveniently and stably fixed, and the risk of electrical connection failure caused by displacement of the wire harnesses is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery device, an energy storage device, an energy storage system, and a charging network. Background Technology

[0002] The battery assembly includes a separator assembly in which aluminum busbars and wire harnesses are fixedly mounted. The number of wire harnesses is usually multiple, and the multiple wire harnesses are fixed by cable ties. Because the wire harnesses are usually cylindrical, the cable ties are difficult to secure multiple wire harnesses stably, which may cause some wire harnesses to detach from the separator. Utility Model Content

[0003] This application aims to provide a battery device, energy storage device, energy storage system, and charging network that at least solves the problem of wiring harnesses in battery devices easily detaching from the separator.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, embodiments of this application propose a battery device, which includes a separator, connecting tabs, battery cells, and ribbon cables. The device comprises multiple connecting tabs and battery cells, with each connecting tab connected to the separator. The battery cells are electrically connected to the connecting tabs, and each connecting tab is electrically connected to at least one battery cell. The ribbon cables are connected to the separator and also electrically connected to the connecting tabs.

[0006] As an integrated cable structure, the ribbon cable replaces the scattered multiple wire bundles in related technologies. The flat design of the ribbon cable reduces the space occupied by the cables, making the component structure mounted on the separator plate more compact, effectively reducing the size and height of the battery module, and thus improving the energy density of the battery pack. Replacing loose wire bundles with ribbon cables solves the problem of loosening and difficulty in fixing caused by the dispersed arrangement of cylindrical wires in related technologies. This is because the ribbon cable's integrated design reduces the likelihood of multiple wire bundles shifting and becoming unstable, thus facilitating stable fixing and reducing the risk of electrical connection failure due to wire bundle displacement. Furthermore, the integrated design of the ribbon cable reduces the use of individual cables, lowers material costs, and improves production efficiency, making it particularly suitable for applications with high requirements for battery performance, safety, and cost control.

[0007] In one possible technical solution, the first side of the ribbon cable is adjacent to the connecting piece, and the second side of the ribbon cable is opposite to the connecting piece. The direction from the first side to the second side of the ribbon cable is the first direction. The ribbon cable includes multiple wire bundles, which are distributed sequentially along the first direction.

[0008] The ribbon cable is positioned on the side of the connecting piece, with its first side close to the connecting piece and its second side away from it. Multiple wire bundles within the ribbon cable are arranged sequentially along a first direction, from the first side to the second side. In this configuration, the multiple wire bundles occupy only the width of the separator, preventing the ribbon cable from excessively occupying the thickness of the separator. This reduces the thickness of the separator and consequently, the overall size of the battery assembly.

[0009] In one possible technical solution, a portion of the isolation plate is bent to form a first receiving groove, and the cable is fixed in the first receiving groove.

[0010] Because the ribbon cable is installed within the first receiving slot, it will not protrude beyond the separator plate, or protrude excessively, making it less likely to interfere with other structures and thus reducing the cable's damage rate. Furthermore, housing the ribbon cable within the first receiving slot is equivalent to retracting it into the separator plate, thereby reducing the thickness of the overall structure formed by the ribbon cable and separator plate, and minimizing the space occupied by this structure within the battery device.

[0011] In one possible technical solution, the ribbon cable is bonded and fixed in the first receiving groove.

[0012] When installing ribbon cables, the ribbon cables can be glued and fixed to the isolation plate at one time, instead of gluing multiple wire harnesses one by one. This effectively reduces the difficulty of installing ribbon cables and improves the convenience of installation.

[0013] Compared to methods like bundling and locking, adhesive bonding offers advantages in terms of ease of operation and simplification. Fixing the ribbon cable to the isolation plate via adhesive bonding improves the efficiency of ribbon cable assembly.

[0014] In one possible technical solution, the isolation plate is provided with a second receiving groove, and at least a portion of the connecting piece is received in the second receiving groove.

[0015] The second receiving groove serves to position and limit the connecting piece. When the connecting piece is installed into the second receiving groove, it is accurately installed in the predetermined position, eliminating the need for frequent adjustments by workers and improving installation convenience. Furthermore, the limiting effect of the second receiving groove prevents the connecting piece from wobbling, thus enhancing installation stability.

[0016] In one possible technical solution, the isolation plate is provided with a riveting part, the connecting piece is provided with a riveting hole, the riveting part passes through the riveting hole, and the connecting piece is connected to the isolation plate by hot pressing riveting.

[0017] The isolation plate is provided with a riveting part. When installing the connecting piece, the riveting part is passed through the riveting hole on the connecting piece, and the end of the riveting part extends out of the riveting hole. The end of the riveting part is hot-pressed, so that the end of the riveting part is flattened and its width increases. At this time, the end of the riveting part can limit the connecting piece, so that the connecting piece is stably fixed on the surface of the isolation plate.

[0018] In one possible technical solution, the inner wall of any second receiving groove is provided with N riveting parts, and the number of riveting holes on each connecting piece is N, where N is greater than or equal to 2.

[0019] When there are two or more riveting parts, at least two riveting parts can limit the connection piece, making it less likely for the connection piece to twist in a small range, which helps to further improve the installation stability of the connection piece.

[0020] In one possible technical solution, the isolation plate is provided with a third receiving groove, which connects the first receiving groove and the second receiving groove, and a portion of the ribbon cable extends into the third receiving groove and is connected to the connecting piece.

[0021] A third receiving groove is provided between the first receiving groove and the second receiving groove. Both the first and second receiving grooves are connected to the third receiving groove. A bent portion of the wire harness can extend from the first receiving groove into the third receiving groove. This arrangement can reduce the damage rate of the wire harness.

[0022] In one possible technical solution, the partition is a thermoformed partition.

[0023] Compared to injection-molded separators in related technologies, vacuum-formed separators are thinner and lighter, reducing the overall weight of the battery device while maintaining sufficient mechanical strength, thus further meeting the requirements for energy density and lightweight design.

[0024] Secondly, embodiments of this application propose an energy storage device, which includes any of the battery devices described above.

[0025] Thirdly, this application provides an energy storage system, which includes the above-mentioned energy storage devices.

[0026] Fourthly, this application provides a charging network including the above-mentioned energy storage system.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of the structure of a battery device according to an embodiment of the present utility model;

[0030] Figure 2 This is one of the structural schematic diagrams of the isolation plate and connecting piece according to an embodiment of the present utility model;

[0031] Figure 3 This is a second structural schematic diagram of the isolation plate and connecting piece according to an embodiment of the present utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the isolation plate, connecting piece and wire harness according to an embodiment of the present utility model;

[0033] Figure 5 This is a structural schematic diagram of the isolation plate and the riveting part according to an embodiment of the present utility model;

[0034] Figure 6 This is a schematic diagram of the structure of the isolation plate according to an embodiment of the present utility model;

[0035] Figure 7 This is a schematic diagram of the charging network according to an embodiment of the present utility model;

[0036] Figure 8 A schematic block diagram of an energy storage system and a power generation device in an embodiment of the present invention is shown.

[0037] Figure label:

[0038] 10 Energy storage device, 100 Battery device, 110 Separator plate, 111 First receiving slot, 112 Second receiving slot, 113 Riveting part, 114 Third receiving slot, 120 Connecting piece, 121 Riveting hole, 130 Battery cell, 140 Cable, 141 Wire harness, 20 Energy storage system, 210 Energy storage converter, 30 Charging network, 310 Charging pile, 40 Power generation device. Detailed Implementation

[0039] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0040] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The following is combined Figures 1-8 This invention describes a battery device, an energy storage device, an energy storage system, and a charging network according to embodiments of the present invention.

[0044] With the rapid development of industries such as energy storage power stations, battery modules, as the core unit for energy storage and output, require their internal cells to be connected in series or parallel through conductive connecting pieces to form the required voltage and capacity. At the same time, parameters such as cell voltage and temperature need to be collected through wiring harnesses and transmitted to the battery management system to meet the needs of safety monitoring and control.

[0045] Because the electronic wires are cylindrical, they need to be enclosed in a frame using a partition and secured with cable ties to prevent them from moving around during transport. However, if there are many wires, they may still come out of the partition.

[0046] In related technologies, wire harnesses are typically cylindrical and are installed as separate individuals. Each wire needs to be individually arranged and secured, making it difficult to ensure the precision and stability of their relative positions. During the installation of battery devices, due to the large number of wire harnesses, they are prone to tangling and friction. Furthermore, when subjected to external forces such as vibration and impact, the wire harnesses are susceptible to relative displacement, leading to loosening of the harnesses.

[0047] Based on the above considerations, in order to improve the installation stability of the connecting lines on the separator plate, this application proposes a battery device. In the battery device, a ribbon cable is used to connect to the separator plate, and the ribbon cable is electrically connected to the connecting piece on the separator plate. The ribbon cable replaces the multiple wire harnesses in related technologies. The ribbon cable is an integrated structure formed by arranging multiple wires in parallel according to certain rules and encapsulating them together. It is an integrated cable assembly, and the relative positions of each wire are fixed, preventing dispersion and displacement. During installation, the ribbon cable can be arranged and fixed as a whole, better maintaining its original shape and structure, and reducing the problem of installation instability caused by loose wire harnesses.

[0048] 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 power stations can store electrical energy during off-peak hours and provide power to users or electrical equipment during peak hours. Wind power generation systems collect wind energy from wind turbines, convert it into electricity, and then store it in energy storage devices. Solar power generation systems convert solar energy into electricity, store it in energy storage devices, and supply it to users as needed. Mobile power systems can supply power to electrical equipment in areas inaccessible by the mains grid, such as remote mountainous areas and isolated wilderness areas. Temporary power supply systems can provide power to users when there is insufficient electricity.

[0049] Energy storage devices can be energy storage containers, energy storage cabinets, etc.

[0050] In the embodiments of this application, a battery device, an energy storage device, an energy storage system, and a charging network are proposed.

[0051] Figure 7 This is a schematic diagram of the structure of a charging network 30 provided in some embodiments of this application. The embodiments of this application provide a charging network 30, which includes a charging pile 310 for charging electrical equipment. The charging network 30 may also include an energy storage device 10, which is electrically connected to the charging pile 310 and provides power to the charging pile 310.

[0052] It should be noted that the charging pile 310 and the battery cells in the energy storage device 10 are electrically connected via cables, and the battery cells can supply the charging pile 310 with their stored electrical energy. The charging pile 310 has a connector that can be connected to electrical equipment, thereby replenishing the energy of the equipment. The application of the energy storage device 10 in the charging network 30 can effectively improve the security of the charging network 30 and also help to improve the flexibility of the charging network 30 during deployment.

[0053] In a charging network 30, there can be one charging pile 310, and the energy storage device 10 provides power to the one charging pile 310. There can also be multiple charging piles 310, and the energy storage device 10 provides power to multiple charging piles 310.

[0054] As an example, such as Figure 7 As shown, the charging network 30 includes an energy storage device 10 and two charging piles 310, with the energy storage device 10 providing power to the two charging piles 310.

[0055] The energy storage device 10 may include a battery device 100, which is electrically connected to the charging pile 310 so that the battery device 100 can provide power to the charging pile 310.

[0056] like Figure 8 As shown in the figure, this application embodiment provides an energy storage system 20. The energy storage system 20 includes an energy storage converter 210, which can be electrically connected to a generator 40 to convert the electrical power provided by the generator 40. The energy storage system 20 may also include an energy storage device 10, which is electrically connected to the energy storage converter 210. The energy storage converter 210 converts the electrical energy provided by the generator 40 and stores it in the energy storage device 10.

[0057] The energy storage converter 210 is used to connect between the power generation device 40 and the energy storage device 10. The power generation device 40 generates electrical energy and stores the generated electrical energy in the energy storage device 10 via the energy storage converter 210. The application of the energy storage device 10 in the energy storage system 20 can effectively improve the operational safety of the energy storage system 20. In specific implementations, the power generation equipment can be solar panels, hydroelectric power generation equipment, thermal power generation equipment, etc. The specific type of power generation equipment is not limited in this application.

[0058] As an example, such as Figure 8 As shown, the energy storage system 20 includes an energy storage device 10 and an energy storage converter 210. The two power generation devices 40 respectively transmit the generated electrical energy to the energy storage converter 210, and the energy storage converter 210 introduces the electrical energy into the energy storage device 10 for storage.

[0059] Combination Figure 1 and Figure 2 As shown in some embodiments of this application, a battery device 100 is proposed. The battery device 100 includes a separator 110, connecting pieces 120, battery cells 130, and ribbon cables 140. There are multiple connecting pieces 120 and battery cells 130. Multiple connecting pieces 120 are connected to the separator 110. Battery cells 130 are electrically connected to the connecting pieces 120, and each connecting piece 120 is electrically connected to at least one battery cell 130. Ribbon cables 140 are connected to the separator 110 and are also electrically connected to the connecting pieces 120.

[0060] The isolation plate 110, as a basic support and isolation component, is usually made of a material with good insulation properties. Its structural design can provide a basis for fixing and positioning other components, and through the insulation properties of the material, it can physically separate the high-voltage conductive parts and low-voltage signal parts in the battery module, preventing short circuits caused by accidental contact between components with different potentials, and providing basic protection for the electrical safety of the entire battery device 100.

[0061] The connecting piece 120 is connected to the isolation plate 110. The connecting piece 120 is generally made of metal, such as copper or aluminum. The connecting piece 120 has good conductivity. Each connecting piece 120 is electrically connected to the positive and negative terminals of at least one battery cell 130. By combining multiple connecting pieces 120, multiple battery cells 130 can be connected in series or in parallel according to design requirements to achieve effective storage and release of electrical energy.

[0062] As the core energy storage unit of the battery device 100, each cell 130 is electrically connected to the corresponding connecting piece 120 through its own positive and negative terminals. The connecting piece 120 serves as a bridge for current transmission, connecting each cell 130 into the circuit architecture to ensure that multiple cells 130 can work together.

[0063] The main function of the ribbon cable 140 is to transmit the key parameter acquisition signals such as voltage and temperature of the battery cell 130 to the control system. In some cases, it may also serve as an auxiliary power transmission function, providing necessary power support for the monitoring components (such as temperature sensors) related to the battery cell 130.

[0064] As an integrated cable structure, the ribbon cable 140 replaces the scattered multiple wire harnesses in related technologies. The flattened design of the ribbon cable 140 reduces the space occupied by the cables, making the component structure mounted on the separator 110 more compact, effectively reducing the volume and height of the battery module, and thus improving the energy density of the battery pack. The ribbon cable 140's replacement of loose wire harnesses solves the problem of loosening and difficulty in fixing caused by the scattered arrangement of cylindrical wires in related technologies. This is because the ribbon cable 140's integrated design reduces the likelihood of multiple wire harnesses shifting and becoming unstable, thus facilitating stable fixing of the ribbon cable 140 and reducing the risk of electrical connection failure due to wire harness displacement. Furthermore, the integrated design of the ribbon cable 140 reduces the use of individual cables, lowers material costs, and improves production efficiency, making it particularly suitable for applications with high requirements for battery performance, safety, and cost control.

[0065] Combination Figure 1 , Figure 2 and Figure 4 As shown, in one possible embodiment, the first side of the ribbon cable 140 is adjacent to the connecting piece 120, and the second side of the ribbon cable 140 is away from the connecting piece 120. The direction from the first side of the ribbon cable 140 to the second side of the ribbon cable 140 is the first direction. Figure 1 (The arrow at L in the middle points to). The ribbon cable 140 includes multiple wire bundles 141, which are distributed sequentially along the first direction.

[0066] The ribbon cable 140 includes multiple wire bundles 141. The multiple wire bundles 141 with conductive function are arranged closely in a preset direction. The ribbon cable 140 is a flat composite wire assembly formed by the overall encapsulation of multiple wire bundles 141 through a flexible insulating substrate. Structurally, it is a strip-shaped form with a width significantly greater than its thickness.

[0067] The ribbon cable 140 is disposed on the side of the connecting piece 120, with its first side close to the connecting piece 120 and its second side away from the connecting piece 120. Multiple wire bundles 141 within the ribbon cable 140 are arranged sequentially along a first direction, from the first side of the ribbon cable 140 to the second side. In this configuration, the multiple wire bundles 141 within the ribbon cable 140 occupy only the space along the width direction of the separator 110, preventing the ribbon cable 140 from excessively occupying the space along the thickness direction of the separator 110. This reduces the size of the separator 110 along the thickness direction, thereby reducing the overall size of the battery device 100.

[0068] Combination Figure 1 , Figure 2 and Figure 3As shown, in one possible embodiment, a portion of the partition plate 110 is bent to form a first receiving groove 111, and the ribbon cable 140 is fixed in the first receiving groove 111.

[0069] A portion of the structure of the isolation plate 110 is bent so that a portion of the structure of the isolation plate 110 is recessed to one side, thereby forming a first receiving groove 111 on the isolation plate 110. When the ribbon cable 140 is installed, the ribbon cable 140 can be accommodated in the first receiving groove 111.

[0070] Since the ribbon cable 140 is installed within the first receiving groove 111, the ribbon cable 140 will not protrude beyond the separator 110, or the ribbon cable 140 will not protrude excessively beyond the separator 110, making it less likely for the ribbon cable 140 to interfere with other structures, thereby helping to reduce the damage rate of the ribbon cable 140. Furthermore, accommodating the ribbon cable 140 within the first receiving groove 111 is equivalent to retracting the ribbon cable 140 into the separator 110, thereby reducing the thickness of the overall structure formed by the ribbon cable 140 and the separator 110, and reducing the space occupied by the overall structure formed by the ribbon cable 140 and the separator 110 within the battery device 100.

[0071] In one possible embodiment, the ribbon cable 140 is bonded and fixed within the first receiving groove 111.

[0072] In this embodiment, the ribbon cable 140 is fixed in the first receiving groove 111 by adhesive bonding. Compared with multiple scattered wire harnesses, the ribbon cable 140 in this embodiment is an integral integrated structure. When installing the ribbon cable 140, the ribbon cable 140 can be glued and fixed to the isolation plate 110 at one time, without having to glue multiple wire harnesses one by one. This effectively reduces the installation difficulty of the ribbon cable 140 and improves the installation convenience of the ribbon cable 140.

[0073] Compared with binding and locking, the bonding method is easier to operate and simpler to implement. Fixing the ribbon cable 140 to the isolation plate 110 by bonding helps to improve the assembly efficiency of the ribbon cable 140.

[0074] For example, the partition plate 110 is shaped downward to avoid the cable 140, which is fixed in the first receiving groove 111 with double-sided tape.

[0075] Combination Figure 1 , Figure 3 and Figure 5 As shown, in one possible embodiment, the isolation plate 110 is provided with a second receiving groove 112, and at least a portion of the connecting piece 120 is received in the second receiving groove 112.

[0076] A second receiving groove 112 is also provided on the isolation plate 110. The second receiving groove 112 can be formed by bending a part of the structure of the isolation plate 110, or by thinning a part of the structure of the isolation plate 110 to form the second receiving groove 112.

[0077] The second receiving groove 112 can position and limit the connecting piece 120. When the connecting piece 120 is installed in the second receiving groove 112, the connecting piece 120 is accurately installed in the predetermined installation position, eliminating the need for frequent adjustments by the operator and improving the ease of installation. Moreover, under the limiting effect of the second receiving groove 112, the connecting piece 120 is less prone to shaking, thus improving the installation stability of the connecting piece 120.

[0078] Since the connecting piece 120 is installed within the second receiving groove 112, it will not protrude excessively from the separator 110. This reduces the possibility of interference between the connecting piece 120 and other structures, thereby helping to reduce the damage rate of the connecting piece 120. Furthermore, accommodating the connecting piece 120 within the second receiving groove 112 is equivalent to retracting the connecting piece 120 into the separator 110, which reduces the thickness of the overall structure formed by the connecting piece 120 and the separator 110, and reduces the space occupied by the overall structure formed by the connecting piece 120 and the separator 110 within the battery device 100.

[0079] Combination Figure 2 and Figure 5 As shown, in one possible embodiment, the isolation plate 110 is provided with a riveting part 113, the connecting piece 120 is provided with a riveting hole 121, the riveting part 113 passes through the riveting hole 121, and the connecting piece 120 is connected to the isolation plate 110 by hot pressing riveting.

[0080] The isolation plate 110 is provided with a riveting part 113. When installing the connecting piece 120, the riveting part 113 is passed through the riveting hole 121 on the connecting piece 120, and the end of the riveting part 113 extends out of the riveting hole 121. The end of the riveting part 113 is hot-pressed, so that the end of the riveting part 113 is flattened and its width increases. At this time, the end of the riveting part 113 can limit the connecting piece 120, so that the connecting piece 120 is stably fixed on the surface of the isolation plate 110.

[0081] The connecting piece 120 is installed on the isolation plate 110 by hot riveting, which helps to improve the installation reliability of the connecting piece 120.

[0082] Combination Figure 2 and Figure 5As shown, in one possible embodiment, the inner wall of any second receiving groove 112 is provided with N riveting parts 113, and the number of riveting holes 121 on each connecting piece 120 is N, where N is greater than or equal to 2.

[0083] The riveting part 113 is provided on the inner wall of the second receiving groove 112, making full use of the space inside the second receiving groove 112, so that it does not need to occupy the space outside the second receiving groove 112.

[0084] The number of riveting portions 113 in the second receiving groove 112 is at least two, and the number of riveting holes 121 on the connecting piece 120 is equal to the number of riveting portions 113 in the second receiving groove 112. When the number of riveting portions 113 is two or more, at least two riveting portions 113 can limit the connecting piece 120, making it less prone to small-range torsion, which helps to further improve the installation stability of the connecting piece 120.

[0085] Combination Figure 1 , Figure 5 and Figure 6 As shown, in one possible embodiment, the isolation plate 110 is provided with a third receiving groove 114, which connects the first receiving groove 111 and the second receiving groove 112. A portion of the ribbon cable 140 extends into the third receiving groove 114 and is connected to the connecting piece 120.

[0086] A portion of the wire harness 141 in the ribbon cable 140 is bent and connected to the connecting piece 120. Since both the ribbon cable 140 and the connecting piece 120 are installed in the receiving groove, in this embodiment, a third receiving groove 114 is provided between the first receiving groove 111 and the second receiving groove 112. The first receiving groove 111 and the second receiving groove 112 are both connected to the third receiving groove 114. The bent portion of the wire harness 141 can extend from the first receiving groove 111 into the third receiving groove 114. This arrangement can reduce the damage rate of the wire harness 141. A portion of the structure of the isolation plate 110 will not lift the wire harness 141 and damage it.

[0087] In one possible embodiment, the partition 110 is a thermoformed partition.

[0088] The vacuum-formed separator can be precisely adapted to the spatial layout of the internal components of the battery device 100 through vacuum forming process. The vacuum-formed separator can be designed with contour-following avoidance areas according to actual needs, so that the separator 110 is closely attached to components such as the ribbon cable 140 and the connecting piece 120, effectively utilizing the limited internal space and solving the space waste problem caused by the fixed size limitation of injection-molded separators in related technologies. The vacuum-formed separator solution can significantly reduce the overall volume and height of the battery device 100 and improve the energy density of the battery device 100.

[0089] Compared to injection-molded separators in related technologies, vacuum-formed separators are thinner and lighter, reducing the overall weight of the battery device 100 while maintaining sufficient mechanical strength, thus further meeting the requirements for energy density and lightweight design.

[0090] The vacuum-formed separator replaces the heavy separator structure that requires additional injection molding in related technologies. Combined with the integrated design of the wiring harness 140, it reduces the complexity of the overall structure and the amount of material used, thereby reducing production costs and process difficulty. At the same time, the lightweight and compact characteristics of the vacuum-formed separator are more suitable for the needs of large-scale automated production, effectively improving the production efficiency and consistency of the battery device 100. It comprehensively achieves multiple technical goals of space optimization, cost control, safety and reliability, and process simplification.

[0091] By replacing the loose wiring harness in the relevant technology with ribbon cable 140 and the injection-molded separator with a vacuum-formed separator, the height of the entire battery device 100 can be reduced, and the ribbon cable 140 is a single unit that will not be scattered during use and does not require the use of cable ties for fixation.

[0092] Compared with the hot-pressing method, the hot riveting method for fixing the connecting piece 120 is more reliable. The double-sided adhesive method for fixing the ribbon cable 140 eliminates the hot pressing step, reducing costs and labor time.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0094] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized by, The battery device comprises: a separation plate; a plurality of connecting pieces connected to the separation plate; a plurality of battery cells, the battery cells being electrically connected to the connecting pieces, each of the connecting pieces being electrically connected to at least one of the battery cells; a cable connected to the separation plate, the cable being electrically connected to the connecting pieces.

2. The battery device according to claim 1, characterized by A first side of the cable is adjacent to the connecting pieces, a second side of the cable is away from the connecting pieces, and a direction from the first side of the cable to the second side of the cable is a first direction. The cable comprises a plurality of wire bundles, and the wire bundles are sequentially distributed along the first direction.

3. The battery device of claim 1, wherein A portion of the separation plate is bent and forms a first accommodating groove, and the cable is fixed in the first accommodating groove.

4. The battery device of claim 3, wherein The cable is adhesively fixed in the first accommodating groove.

5. The battery device of claim 3, wherein The separation plate is provided with a second accommodating groove, and at least a portion of the connecting pieces is accommodated in the second accommodating groove.

6. The battery device of claim 5, wherein, The separation plate is provided with a riveting portion, the connecting pieces are provided with riveting holes, the riveting portion passes through the riveting holes, and the connecting pieces are connected to the separation plate by hot riveting.

7. The battery device of claim 6, wherein An inner wall of any of the second accommodating grooves is provided with N riveting portions, and the number of the riveting holes on each of the connecting pieces is N, N being greater than or equal to 2.

8. The battery device of claim 5, wherein, The separation plate is provided with a third accommodating groove, the third accommodating groove communicates the first accommodating groove and the second accommodating groove, and a portion of the cable extends into the third accommodating groove and is connected to the connecting pieces.

9. The battery device according to any one of claims 1 to 8, characterized by, The separation plate is a blister separation plate.

10. An energy storage device, characterized by, The battery device comprises: The battery device according to any one of claims 1 to 9.

11. An energy storage system characterized by, The energy storage device comprises: The energy storage device according to claim 10.

12. A charging network characterized in that, The energy storage system comprises: The energy storage system according to claim 11.

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