Battery module and energy storage module

Abstract

A battery module and an energy storage module. The battery module comprises a housing assembly (1) arranged in the shape of a polygonal prism, wherein an external port (15) is arranged on a side wall of the housing assembly (1); a battery cell energy storage member (2), which is mounted inside the housing assembly (1); and an electrically conductive ring assembly (3), which is disposed inside the housing assembly (1) and electrically connected to the battery cell energy storage member (2), wherein an output external member (5) is connected to the electrically conductive ring assembly (3) by means of the external port (15).

Description

Battery module and energy storage module

[0001] The present application claims priority to the Chinese patent application No. 2024207984867, filed on April 16, 2024, the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of batteries, in particular to a battery module and an energy storage module. BACKGROUND

[0003] At present, the related portable energy storage battery pack is a single battery pack. When the battery pack is out of power, another battery pack needs to be replaced for power supply. At this time, if the number of electrical appliances connected to the battery pack is large, the electrical appliances need to be powered off and removed one by one, and then reconnected to the new battery pack for continuous use, which is very inconvenient. TECHNICAL SOLUTION

[0004] In a first aspect, the present application provides a battery module, comprising:

[0005] An outer shell assembly arranged in a multi-prism shape, the side wall of the outer shell assembly is provided with an external port;

[0006] An electric core energy storage piece, which is installed inside the outer shell assembly;

[0007] A conductive ring assembly, which is arranged inside the outer shell assembly, the conductive ring assembly is electrically connected to the electric core energy storage piece, and an output external connecting piece is connected to the conductive ring assembly through the external port.

[0008] In a second aspect, the present application provides an energy storage module, comprising:

[0009] The output external connecting piece;

[0010] The battery module described above, the output external connecting piece is inserted into the external port of the outer shell assembly and electrically connected to the conductive ring assembly. ADVANTAGEOUS EFFECTS

[0011] The conductive ring assembly and the outer shell assembly are ingeniously matched, so that the electric core energy storage piece can output electric energy from different directions, achieving the purpose of multi-directional power output of the battery module. The structure is simple and convenient for production and assembly. More importantly, when the electric quantity of the electric core energy storage piece is low, the unconnected external port of the outer shell assembly can be connected in parallel to another battery module, thereby achieving the purpose of improving the required electric capacity of all electrical appliances without removing the electrical appliances from the battery module, and ensuring the continuous and stable use of each electrical appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG1 is a first overall structural diagram of a battery module of the present application;

[0013] FIG2 is a second overall structural diagram of a battery module of the present application;

[0014] FIG3 is a partial exploded structural diagram of a battery module of the present application;

[0015] FIG4 is a partial assembly structure diagram of a battery module of the present application;

[0016] FIG5 is a first partial exploded view of the battery cell energy storage component and the conductive ring assembly in the present application;

[0017] FIG6 is a second partial exploded view of the battery cell energy storage component and the conductive ring assembly in the present application;

[0018] FIG7 is a schematic diagram of the assembly structure of an energy storage module of the present application;

[0019] FIG8 is a schematic diagram of three structures of output external components in this application;

[0020] FIG9 is a schematic diagram of the assembly structure of an energy storage module of the present application;

[0021] FIG10 is a first assembly distribution diagram of an energy storage module of the present application;

[0022] FIG11 is a second assembly distribution diagram of an energy storage module of the present application;

[0023] FIG12 is a third assembly distribution diagram of an energy storage module of the present application.

[0024] Icons: 1-Outer shell assembly, 11-Energy storage outer box, 12-Outer shell bottom cover, 13-Outer shell top cover, 14-Heat dissipation vent, 15-External port, 16-Sealing protection plug, 17-Energy storage inner cavity, 18-Limiting frame structure, 19-Pole ring limiting port, 2-Battery cell energy storage component, 21-Battery cell unit, 22-CCS assembly, 221-Flexible circuit board, 222-Base frame structure, 223-Top frame structure, 224-Module support frame, 23-Current-carrying conductor, 24-Main positive wiring harness, 25-Main negative wiring harness, 3-Conductive ring assembly, 31-Positive conductive ring, 32-Negative conductive ring, 41-Switch button, 42-Display light, 5-Output external components, 51-Charging module, 52-USB output module, 53-DC output module, 54-Conductive connection bar. Modes for Carrying Out the Invention

[0025] Specifically, please refer to FIG. 1 and FIG. 2, the application discloses a battery module, comprising a battery energy storage element 2, a conductive ring assembly 3, and a shell assembly 1 in a multi-prism structure. In some embodiments, the shell assembly 1 is made of hard plastic, and the shell assembly 1 has an energy storage outer box 11, a shell bottom cover 12, and a shell top cover 13. The shell bottom cover 12 and the shell top cover 13 are respectively installed and fixed on the two opposite sides of the energy storage outer box 11. In some embodiments, the installation and fixation is a bolt connection, and can also be a clamping connection or a welding connection.

[0026] In this embodiment, the conductive ring assembly 3 is arranged inside the shell assembly 1, and the conductive ring assembly 3 and the battery energy storage element 2 are electrically connected. The largest surface of the shell bottom cover 12 is defined as the bottom cover large surface, the largest surface of the shell top cover 13 is defined as the top cover large surface, the direction perpendicular to the bottom cover large surface is the height direction of the shell assembly 1, and after assembly, the top cover large surface and the bottom cover large surface are distributed in parallel. The above-mentioned multi-prism should be understood as that the top cover large surface and the bottom cover large surface are both polygons, i.e. a planar figure composed of three or more line segments connected in order, and each quadrilateral outer side surface of the energy storage outer box 11 is perpendicular to the bottom cover large surface.

[0027] This embodiment takes a hexagonal prism as an example, i.e. the top cover large surface and the bottom cover large surface are both hexagons, to better describe the structure and connection relationship of the battery module, but is not limited to the shell assembly 1 in a hexagonal prism structure. Generally, the energy storage outer box 11, the shell bottom cover 12, and the shell top cover 13 will form a relatively closed energy storage inner cavity 17, and the above-mentioned battery energy storage element 2 is installed in the energy storage inner cavity 17 inside the shell assembly 1.

[0028] Specifically, the energy storage inner cavity 17 is configured with one or more limiting rack structures 18, and the one or more limiting rack structures 18 cooperate to form an installation station suitable for the battery energy storage element 2, and the battery energy storage element 2 is embedded into the installation station. This not only realizes quick positioning of the battery energy storage element 2 during assembly, improves the assembly efficiency of the battery module, but also realizes stable positioning of the battery energy storage element 2 after assembly, and guarantees the structural stability and use stability of the battery module.

[0029] Unexpectedly, the conductive ring assembly 3 can also be mounted and fixed on the limiting frame structure 18, specifically, the limiting frame structure 18 is formed with a polar ring limiting opening 19, and the conductive ring assembly 3 is embedded and fixed in the polar ring limiting opening 19, which not only can well ensure that the conductive ring assembly 3 is mounted and fixed on the outer shell assembly 1, ensures the efficiency and convenience of the conductive ring assembly 3 in the assembly process, and reduces the assembly difficulty of the battery module. At the same time, as shown in FIG. 4, in the height direction of the outer shell assembly 1, the cell energy storage piece 2 will be within the conductive ring assembly 3 in the orthographic projection range, then the distance between the circumferential side of the conductive ring assembly 3 and the side wall of the energy storage outer box body 11 will be reduced.

[0030] In some embodiments, specifically as shown in FIG. 7, the side wall of the outer shell assembly 1 is provided with an external port 15, and the output external piece 5 connects the conductive ring assembly 3 through the external port 15, specifically, each quadrilateral outer side surface of the energy storage outer box body 11 of the outer shell assembly 1 is provided with an external port 15, that is, any side wall of the outer shell assembly 1 is provided with an external port 15, and the external port 15 penetrates the side wall of the energy storage outer box body 11.

[0031] In this way, the circumferential side of the conductive ring assembly 3 reduces the distance between the external ports 15 on the energy storage outer box body 11, and in some embodiments, the conductive ring assembly 3 and the external port 15 are correspondingly arranged, that is, the conductive ring assembly 3 corresponds to the external port 15, and the conductive ring assembly 3 is in the extension direction of the external port 15, so that the distance between the conductive ring assembly 3 and the external port 15 is minimized, then the output external piece 5 is inserted into the side surface of the outer shell assembly 1, and the butt joint part of the output external piece 5 penetrates the external port 15 and is electrically connected to the conductive ring assembly 3, the contact area between the butt joint part of the output external piece 5 and the conductive ring assembly 3 is increased, which helps to improve the stability of the electrical connection between the butt joint part and the conductive ring assembly 3.

[0032] As can be seen from the above, the conductive ring assembly 3 and the outer shell assembly 1 are cleverly matched, so that the cell energy storage piece 2 can output electrical energy from different directions, achieving the purpose of multiple direction power output of the battery module, and the structure is simple and convenient for production and assembly.

[0033] It should be noted that, specifically as shown in FIG. 7 and FIG. 8, the output external piece 5 of the battery module can be a charging module 52, can be a USB output module 52, and can also be a direct current output module 53. The output external piece 5 is provided with a plurality of output ports, so that through the output external piece 5, the number of external ports 15 on the outer shell assembly 1 can be well increased and expanded. The output port of the output external piece 5 can be a USB socket, and can also be a direct current double jack for connecting a wire plug, so that through the output external piece 5, the applicability of the battery module can be well improved.

[0034] It should be noted that in addition to the manner of installing and fixing the conductive ring assembly 3 to the outer shell assembly 1, the conductive ring assembly 3 can also be installed and fixed on the battery energy storage 2.

[0035] In the above, the conductive ring assembly 3 can be a circular ring structure, and in some embodiments, the conductive ring assembly 3 is a polygonal structure that is adapted to the outer shell assembly 1, that is, the shape enclosed by the side of the conductive ring assembly 3 is adapted to the shape of the large surface of the bottom cover of the outer shell assembly 1, and in some embodiments of the present embodiment, it is a hexagon.

[0036] In some embodiments, as shown in FIGS. 3, 4, 5 and 6, one side of the battery energy storage 2 is a positive electrode end and the other side is a negative electrode end, and the conductive ring assembly 3 includes a positive electrode conductive ring 31 and a negative electrode conductive ring 32. The positive electrode conductive ring 31 and the negative electrode conductive ring 32 are separately arranged on the two opposite sides of the battery energy storage 2, that is, the positive electrode conductive ring 31 and the negative electrode conductive ring 32 are installed and fixed on the two opposite sides of the limiting frame structure 18, so that a safety distance is formed between the positive electrode conductive ring 31 and the negative electrode conductive ring 32. The positive electrode conductive ring 31 is electrically connected to the positive electrode end of the battery energy storage 2, and the negative electrode conductive ring 32 is electrically connected to the negative electrode end of the battery energy storage 2.

[0037] In some embodiments, the above-mentioned external port 15 includes a positive electrode external port and a negative electrode external port, and the positive electrode external port and the negative electrode external port are arranged on the same side of the outer shell assembly 1.

[0038] In some embodiments, as shown in FIGS. 4, 5 and 6, the battery energy storage 2 further includes a battery cell 21, and in order to ensure that the battery module has sufficient electrical energy, the number of battery cells 21 is configured to be multiple, and one or more battery cells 21 are connected in series and parallel through a current-carrying conductor 23. The CCS assembly 22 includes a flexible circuit board 221 and a plastic structural member, and the flexible circuit board 221 is fixedly connected to the plastic structural member. The battery cell 21 is detachably connected to the plastic structural member, so that the installation of one or more battery cells 21 is more compact, and under the action of the plastic structural member, the risk of short circuit of the battery energy storage 2 is avoided.

[0039] In some embodiments, as shown in FIGS. 4, 5 and 6, the plastic structure includes a bottom frame structure 222, a top frame structure 223, and a module support frame 224 arranged on the top frame structure 223. The bottom frame structure 222 and the top frame structure 223 are each provided with one or more insertion slots for inserting the battery cell units 21. The shape and size of each insertion slot are adapted to the shape and size of each battery cell unit 21. The battery cell units 21 are installed between the bottom frame structure 222 and the top frame structure 223, so that each battery cell unit 21 is well positioned and constrained, achieving the purpose of stable assembly of the battery cell units 21, and making the overall installation of one or more battery cell units 21 more compact.

[0040] In some embodiments, as shown in FIGS. 4 and 6, the flexible circuit board 221 is fixedly connected to the module support frame 224. The module support frame 224 is provided with a plurality of support columns corresponding to the assembly holes of the flexible circuit board 221. Each support column is provided with a threaded hole. At least one fastener (bolt or screw) passes through the assembly hole of the flexible circuit board 221 and is screwed into the threaded hole, so as to ensure that the flexible circuit board 221 is stably fixed on the module support frame 224. The flexible circuit board 221 has a positive electrode conductive end and a negative electrode conductive end. The positive electrode conductive end of the flexible circuit board 221 is connected to the positive electrode conductive ring 31 through the positive electrode wire harness 24, and the negative electrode conductive end of the flexible circuit board 221 is connected to the negative electrode conductive ring 32 through the negative electrode wire harness 25, so as to achieve the purpose that the positive electrode conductive ring 31 and the negative electrode conductive ring 32 are electrically connected to the battery cell units 21 through the flexible circuit board 221.

[0041] The unexpected effect is that the flexible circuit board 221 is installed and fixed on the top frame structure 223 through the module support frame 224, which can effectively reduce the overall volume of the battery cell energy storage device 2, so that the battery cell energy storage device 2 occupies less space in the outer shell assembly 1. At the same time, it is also convenient for the flexible circuit board 221 to be connected to the positive electrode conductive ring 31 and the negative electrode conductive ring 32.

[0042] In some embodiments, as shown in FIGS. 1 and 3, when the battery cell energy storage device 2 is embedded into the installation station, the bottom frame structure 222 and the top frame structure 223 of the plastic structure will abut against the limiting frame structure 18, so that the plastic structure can be stably installed and fixed on the outer shell assembly 1.

[0043] As the battery cell unit 21 releases a large amount of heat during charging and discharging, in order to avoid the heat released by the battery cell unit 21 and the battery energy storage 2 from being retained and accumulated in the energy storage cavity 17 of the outer shell assembly 1, and the heat released by the battery energy storage 2 is usually located on one side of the chassis structure 222, that is, the heat is most concentrated on the side of the battery energy storage 2 close to the chassis structure 222, therefore, in order to solve this problem, in some embodiments, as shown in FIG. 1, the outer shell bottom cover 12 of the outer shell assembly 1 is provided with a heat dissipation opening 14, and after installation, the chassis structure 222 is arranged on the side close to the outer shell bottom cover 12, so that the heat released by the battery energy storage 2 can be discharged outside the outer shell assembly 1 in time through the heat dissipation opening 14.

[0044] In some embodiments, as shown in FIG. 2, the outer shell top cover 13 is provided with a switch button 41 and / or a display lamp 42, and the switch button 41 and / or the display lamp 42 are electrically connected to the flexible circuit board 221 of the CCS assembly 22, wherein the switch button 41 is used to control the on-off of the battery module to deliver power, and the display lamp 42 is used to show the real-time running state and power storage amount of the battery module. In this way, the design of the switch button 41 and / or the display lamp 42 on the outer shell top cover 13 makes the appearance of the outer shell assembly 1 more simple and improves the overall aesthetics of the battery module.

[0045] In some embodiments, as shown in FIGS. 1, 2 and 3, the battery module further comprises a sealing protection plug 16, which is arranged in the external port 15 of the outer shell assembly 1, so that under the action of the sealing protection plug 16, the unused external port 15 can be sealed in time, thereby avoiding the problem that dust or water droplets outside the outer shell assembly 1 enter the energy storage cavity 17 of the outer shell assembly 1 through the external port 15, causing the battery energy storage 2 to be open or short-circuited.

[0046] In addition, based on the structure and connection relationship of the above-mentioned battery module, as shown in FIGS. 9 to 12, the inventor also discloses an energy storage module, which comprises an output external connecting piece 5 and the above-mentioned battery module, the output external connecting piece 5 is inserted into the external port 15 of the outer shell assembly 1 of the battery module and is electrically connected to the conductive ring assembly 3.

[0047] In some embodiments, as shown in FIG. 9, at least two battery modules are provided, and the output external connecting piece 5 is connected in parallel to the adjacent two battery modules through the external connecting port 15, so that when the electric quantity of the electric cell energy storage piece 2 is in a lower state, the parallel connection can be made from the external connecting port 15 of the shell assembly 1 which is not connected for use to another battery module, and the electric quantity of the electric cell energy storage piece 2 of the battery module is concentrated to supply the electric quantity of the electric cell energy storage piece 2 in the lower state, thereby achieving the purpose of improving the required electric capacity of all electric appliances without removing the electric appliances from the battery module, ensuring the overall endurance, and realizing the continuous and stable use of each electric appliance.

[0048] Specifically, as shown in FIG. 9, the output external connecting piece 5 is provided with a positive output external connecting piece and a negative output external connecting piece, both ends of the positive output external connecting piece are connected through the positive external connecting port of the adjacent two battery modules and the positive conductive ring 31 of the conductive ring assembly 3, and both ends of the negative output external connecting piece are connected through the negative external connecting port of the adjacent two battery modules and the negative conductive ring 32 of the conductive ring assembly 3. In this way, the purpose of connecting the output external connecting piece 5 in parallel to the adjacent two battery modules through the external connecting port 15 is achieved. In some embodiments, the output external connecting piece 5 here adopts the conductive connecting row 54.

[0049] In some embodiments, as shown in FIG. 10, one or more battery modules are arranged along a first direction, which is the extension direction perpendicular to the side of the large surface of the bottom cover and along the radius of the incircle of the large surface of the bottom cover, that is, at least two battery modules are connected in parallel through the output external connecting piece 5. Alternatively, as shown in FIG. 11, one or more battery modules can also be arranged in an interlaced manner along the first direction. Alternatively, as shown in FIG. 12, one or more battery modules are arranged in a honeycomb-like structure.

[0050] In this way, the energy storage module can better adapt to various scenes, and the splicing style of the energy storage module can be flexibly adjusted according to different environmental scenes, achieving better applicability. At the same time, the parallel connection of multiple battery modules can improve the output power and provide more electric energy.

[0051] It should be noted that, as shown in FIG. 9, when one or more battery modules are arranged in a honeycomb-like structure, one or more side walls of the battery module will be in contact with the side wall of the adjacent battery module, but the battery module is only electrically connected to one of the adjacent battery modules. In some embodiments, in order to avoid the risk of short circuit, the external connecting port 15 of the battery module which is not electrically connected through the conductive connecting row can be sealed with a sealing protection plug 16.

Claims

1. A battery module, comprising: a plurality of outer shell assemblies (1) arranged in a polygonal shape, each of the outer shell assemblies (1) being provided with an external port (15); a plurality of battery energy storage units (2) arranged in the inner part of the outer shell assemblies (1); a plurality of conductive ring assemblies (3) arranged in the inner part of the outer shell assemblies (1), the conductive ring assemblies (3) being electrically connected to the battery energy storage units (2), and an output external connector (5) being connected to the conductive ring assemblies (3) through the external port (15).

2. The battery module of claim 1, wherein: The conductive ring assemblies (3) are arranged in a polygonal shape matching the outer shell assemblies (1).

3. The battery module of claim 2, wherein: Each of the outer shell assemblies (1) is provided with the external port (15).

4. The battery module of claim 1 or 2 or 3, wherein: Each of the battery energy storage units (2) has a positive terminal and a negative terminal, and each of the conductive ring assemblies (3) comprises a positive conductive ring (31) and a negative conductive ring (32), the positive conductive ring (31) being electrically connected to the positive terminal of the battery energy storage unit (2), and the negative conductive ring (32) being electrically connected to the negative terminal of the battery energy storage unit (2).

5. The battery module of claim 4, wherein: The external port (15) comprises a positive external port and a negative external port, and the positive external port and the negative external port are arranged on the same side of the outer shell assembly (1).

6. The battery module of claim 1, wherein: The outer shell assembly (1) comprises an energy storage outer box (11), an outer shell bottom cover (12), and an outer shell top cover (13), the outer shell bottom cover (12) being provided with a heat dissipation opening (14), and the outer shell bottom cover (12) and the outer shell top cover (13) being respectively arranged on two opposite sides of the energy storage outer box (11), the outer shell top cover (13) being provided with a switch button (41) and / or a display lamp (42). 7.The battery module of claim 1 or 2 or 3 or 5 or 6, further comprising a sealing protection plug (16) arranged in the external port (15).

8. The battery module of claim 1 or 2 or 3 or 5 or 6, wherein: The outer shell assembly (1) is provided with one or more limiting frame structures (18), each of the limiting frame structures (18) being provided with a polar ring limiting opening (19), and each of the conductive ring assemblies (3) being embedded and fixed in the polar ring limiting opening (19). 9.A battery energy storage module, comprising: the output external connector (5); the battery module of any one of claims 1 to 8, the output external connector (5) being arranged in the external port (15) of the outer shell assembly (1) and being electrically connected to the conductive ring assembly (3). 10.The battery energy storage module of claim 9, wherein:

11. The energy storage module of claim 10, wherein: at least two of the battery modules are arranged in parallel, and the output external connector (5) is connected in parallel to the adjacent two battery modules through the external port (15). At least two of the battery modules are connected in parallel or staggered through the output external connector (5).

12. The energy storage module of claim 11, wherein: The output external connecting piece (5) is provided with a positive output external connecting piece and a negative output external connecting piece, two ends of the positive output external connecting piece are connected with positive conductive rings (31) of the conductive ring assembly (3) through positive external connecting ports of two adjacent battery modules respectively, and two ends of the negative output external connecting piece are connected with negative conductive rings (32) of the conductive ring assembly (3) through negative external connecting ports of two adjacent battery modules respectively.

13. The energy storage module of claim 11, wherein: The output external connecting piece (5) is a charging module (51), a USB output module (52) or a direct current output module (53).

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