Box body, battery unit and battery system

Abstract

The utility model relates to a box body, a battery unit and a battery system, the box body comprises a box body and a connecting structure, the box body is internally provided with a cavity for storing a working fluid box, and the outer side of the box body is provided with a first connecting surface for being connected with an electric pile module; the connecting structure is arranged on the first connecting surface and comprises a liquid connector and an electric connector; the liquid connector is detachably connected to the electric pile module and the working liquid box through the pipe group; the electric connector is detachably connected to the electric pile module. According to the box body disclosed by the invention, the connecting structure is arranged on the first connecting surface, so that the electric pile module arranged on the first connecting surface can be detachably connected with the working liquid box positioned in the cavity through the liquid connector of the connecting structure and can also be electrically connected with the box body through the electric connector of the connecting structure; the connecting structure between the galvanic pile module and the working liquid tank is simplified, and disassembly, assembly and replacement of the galvanic pile module and the working liquid tank are facilitated.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery energy storage, and in particular to a box, a battery unit, and a battery system. Background Art

[0002] With the development of society and the increasing energy demand of various devices and systems, it is necessary to develop high-energy-density batteries to meet power supply requirements. Currently, the connection structure between the stack module and the working fluid tank that provides electrolyte to the stack module is complex and occupies a large space, making it difficult to disassemble and replace, which affects the performance of the battery system. Utility Model Content

[0003] The purpose of the present disclosure is to provide a box, a battery unit and a battery system to improve the efficiency of disassembly and assembly of the working fluid tank and the battery stack module arranged inside and outside the box, thereby at least partially solving the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the present disclosure provides a box body, including: a box body, having a cavity for storing a working fluid tank inside, and a first connecting surface on the outside for connecting to a battery stack module; and a connecting structure, arranged on the first connecting surface, including a liquid connector and an electrical connector; the liquid connector is detachably connected to the battery stack module and the working fluid tank through a tube group, so that the electrolyte in the working fluid tank can circulate in the battery stack module and the working fluid tank; the electrical connector is detachably connected to the battery stack module to output the electrical energy of the battery stack module.

[0005] Optionally, the liquid connector includes a first liquid connector and a second liquid connector, one of the first liquid connector and the second liquid connector is connected to the working liquid tank and the battery stack module through the liquid inlet pipe group of the pipe group, and the other is connected to the working liquid tank and the battery stack module through the liquid outlet pipe group of the pipe group.

[0006] Optionally, the first liquid connector and the second liquid connector are spaced apart and arranged close to an edge of the first connecting surface.

[0007] Optionally, the first liquid connector and the second liquid connector are both configured in plurality, and the plurality of the first liquid connectors and the plurality of the second liquid connectors are alternately arranged in sequence on the first connecting surface.

[0008] Optionally, the first connecting surface is rectangular, and the plurality of first liquid connectors and the plurality of second liquid connectors are extended along an extension direction of any edge of the first connecting surface.

[0009] Optionally, the box body further includes a positioning structure, which can be inserted into the box body to position the box body on the first connecting surface.

[0010] Optionally, there are multiple positioning structures, and the multiple positioning structures are located at the edge of the first connecting surface and are arranged at intervals along the extension direction of the edge of the first connecting surface.

[0011] Optionally, the positioning structure is constructed as a protruding structure.

[0012] According to a second aspect of the present disclosure, a battery cell is provided, comprising a stack module, a working fluid tank and the above-mentioned box body, wherein the stack module is arranged on the first connection surface and connected to the electrical connector, and the working fluid tank is arranged in the cavity and connected to the stack module through the liquid connector.

[0013] The third aspect of the present disclosure provides a battery system, including an intermediate liquid tank, a heat dissipation module and the above-mentioned battery unit; the intermediate liquid tank is arranged on the first connecting surface to be adjacent to the battery stack module, and is connected to the working liquid tank for replacing the waste liquid in the working liquid tank, and the heat dissipation module is arranged in the tank body and / or the first connecting surface for cooling the electrolyte in the working liquid tank.

[0014] Through the above technical solution, the box body of the present invention is provided with a connecting structure on the first connecting surface, so that the battery stack module arranged on the first connecting surface can be detachably connected to the working liquid tank located in the cavity through the liquid connector of the connecting structure, and can be electrically connected to the box body through the electrical connector of the connecting structure. As a result, the connection structure between the battery stack module and the working liquid tank is simplified, and the disassembly and replacement of the two are facilitated. In addition, such an arrangement can also reduce the space occupied by the working liquid tank and the battery stack module after being arranged on the box body.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0017] Figure 1 This is a front view of the box provided by the embodiment of the present disclosure;

[0018] Figure 2 is a top view of the box provided by an embodiment of the present disclosure;

[0019] Figure 3 Schematic diagram of a battery system provided by an embodiment of the present disclosure.

[0020] Description of Reference Numerals

[0021] 1-box body; 101-cavity; 102-first connection surface; 2-connection structure; 21-liquid connector; 211-first liquid connector; 212-second liquid connector; 22-electrical connector; 3-tube group; 31-liquid inlet tube group; 32-liquid outlet tube group; 4-positioning structure; 401-raised structure; 5-fuel cell stack module; 51-fuel cell stack unit; 6-working liquid tank; 7-intermediate liquid tank; 8-heat dissipation module. DETAILED DESCRIPTION

[0022] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0023] In this disclosure, unless otherwise specified, directional terms such as "inside" and "outside" refer to the "inside" and "outside" relative to the outline of the corresponding component itself. In addition, the terms "first" and "second" used in this disclosure are intended to distinguish one element from another and do not have sequential or importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate this disclosure and should not be understood as limiting this disclosure.

[0024] The box, battery unit and battery system in exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0025] refer to Figures 1 to 3As shown, the first aspect of the present disclosure provides a box body, including a box body 1 and a connecting structure 2, wherein the interior of the box body 1 has a cavity 101 for storing the working fluid tank 6, and the outside has a first connecting surface 102 for connecting to the battery stack module 5; the connecting structure 2 is arranged on the first connecting surface 102, including a liquid connector 21 and an electrical connector 22; the liquid connector 21 is detachably connected to the battery stack module 5 and the working fluid tank 6 through the tube group 3, so that the electrolyte in the working fluid tank 6 can circulate in the battery stack module 5 and the working fluid tank 6; the electrical connector 22 is detachably connected to the battery stack module 5 to output the electrical energy of the battery stack module 5. The working fluid tank 6 located in the cavity 101 and the battery stack module 5 located on the first connection surface 102 can be detachably connected together through a liquid connector 21. In this way, when the battery system is working, the electrolyte in the working fluid tank 6 will circulate between the working fluid tank 6 and the battery stack module 5 to ensure the normal operation of the battery system. The electrical connector 22 can be set at any position of the first connection surface 102 to connect with the bottom of the battery stack module 5 to ensure the output of electrical energy of the battery stack module 5. Based on this, the present disclosure simplifies the connection structure 2 between the battery stack module 5 and the working fluid tank 6, which facilitates the disassembly and replacement of the two. In addition, this arrangement also reduces the space occupied by the working fluid tank 6 and the battery stack module 5.

[0026] In the embodiments of the present disclosure, Figure 1 and Figure 2 As shown, since the electrolyte needs to first flow into the battery stack module 5, react in the battery stack module 5, and then flow out of the battery stack module 5, the liquid connector 21 may include a first liquid connector 211 and a second liquid connector 212. One of the first liquid connector 211 and the second liquid connector 212 is connected to the working liquid tank 6 and the battery stack module 5 through the liquid inlet pipe group 31 of the pipe group 3, and the other is connected to the working liquid tank 6 and the battery stack module 5 through the liquid outlet pipe group 32 of the pipe group 3. That is, the electrolyte in the working liquid tank 6 will first enter the battery stack module 5 through the liquid inlet pipe group 31, and then flow out of the battery stack module 5 through the liquid outlet pipe group 32 and flow back into the working liquid tank 6. At this point, a circulation process of the electrolyte is completed.

[0027] Among them, such as Figure 2As shown, the first liquid connector 211 and the second liquid connector 212 are spaced apart and arranged near the edge of the first connection surface 102. The stack module 5 can have multiple stacks, and the multiple stacks can be arranged in sequence along the height direction of the stack module 5. Since the interface of the stack is located on its side, the arrangement of the present disclosure can facilitate the connection of the interface of the stack in the stack module 5 with the first liquid connector 211 and the second liquid connector 212. Specifically, when the stack module 5 is connected to the first connection surface 102, the interface of the stack on it can face one side of the first liquid connector 211 and the second liquid connector 212, so that the distance between the interface of the stack and the liquid connector 21 is the shortest, and the stack module 5 can be connected to the liquid connector 21 without setting an overly long tube group 3.

[0028] In some embodiments, as Figure 1 and Figure 2 As shown, a plurality of first liquid connectors 211 and a plurality of second liquid connectors 212 are provided, and the plurality of first liquid connectors 211 and the plurality of second liquid connectors 212 are alternately arranged on the first connection surface 102. The battery stack module 5 may include a plurality of battery stack units 51 according to different needs, and each battery stack unit 51 includes at least one battery stack, and each battery stack needs to be connected to the liquid connector 21 through the tube group 3. Correspondingly, a first liquid connector 211 and a second liquid connector 212 arranged adjacent to the first liquid connector 211 can be configured as a liquid connector group, and each liquid connector group is connected to the battery stack in a battery stack unit 51 through the tube group 3. Thus, the arrangement of the plurality of first liquid connectors 211 and the second liquid connector 212 can be adapted to battery systems of various specifications, thereby increasing the scope of application of the box body 1.

[0029] In addition, if Figure 2 As shown, the first connection surface 102 can be rectangular, and the plurality of first liquid connectors 211 and the plurality of second liquid connectors 212 can be arranged along the extension direction of any edge of the first connection surface 102. As a result, the interfaces of the stack in the stack module 5 can all be located on one side, so that the arrangement of the pipelines in the tube group 3 is more neat, which facilitates the connection between the stack module 5 and the liquid connectors 21.

[0030] In the embodiments of the present disclosure, Figure 1 and Figure 2As shown, the box body 1 also includes a positioning structure 4, which can be inserted into the box body 1 to position the box body 1 on the first connection surface 102. The positioning structure 4 can facilitate the staff to quickly locate the stack module 5 in the correct installation position when installing the stack module 5 on the box body 1, thereby improving the installation efficiency of the stack module 5. In addition, the positioning structure 4 can also limit the movement of the box body 1 on the first connection surface 102, ensuring the stability of the stack module 5 after connection with the first connection surface 102.

[0031] Among them, such as Figure 1 and Figure 2 As shown, multiple positioning structures 4 can be configured, and multiple positioning structures 4 are located at the edge of the first connection surface 102 and are spaced apart along the extension direction of the edge of the first connection surface 102. The provision of multiple positioning structures 4 can position the box body 1 from multiple directions, further improving the stability of the stack module 5 after it is connected to the first connection surface 102.

[0032] Specifically, if Figure 1 and Figure 2 As shown, the positioning structure 4 can be constructed as a protruding structure 401, and correspondingly, a positioning groove adapted to the protruding structure 401 can be provided on the battery stack module 5, or the positioning groove is provided on the first connecting surface 102, and the protruding structure 401 is provided on the battery stack module 5, that is, the battery stack module 5 and the first connecting surface 102 can be positioned by plug-in fitting, thereby improving the positioning efficiency of the battery stack module 5.

[0033] In the second aspect of the present disclosure, Figure 3 As shown, a battery cell is provided, including a stack module 5, a working fluid tank 6, and the aforementioned housing. The stack module 5 is disposed on the first connection surface 102 and connected to the electrical connector 22. The working fluid tank 6 is disposed in the cavity 101 and connected to the stack module 5 via the liquid connector 21. Under the action of the pump, the electrolyte in the working fluid tank 6 enters the stack of the stack unit 51 through the liquid inlet pipe assembly 31 and the first liquid connector 211, and then flows from the stack through the liquid outlet pipe assembly 32 and the second liquid connector 212 back to the working fluid tank 6, thus completing the electrolyte circulation and ensuring the normal operation of the battery cell.

[0034] The third aspect of the present disclosure is as follows Figure 3As shown, a battery system is provided, including an intermediate liquid tank 7, a heat dissipation module 8, and the above-mentioned battery cells; the intermediate liquid tank 7 is arranged on the first connection surface 102 so as to be adjacent to the stack module 5 and connected to the working liquid tank 6, and is used to replace the waste liquid in the working liquid tank 6. The heat dissipation module 8 is arranged in the tank body 1 and / or the first connection surface 102, and is used to cool the electrolyte in the working liquid tank 6. Spare electrolyte can be placed in the intermediate liquid tank 7. When the electrolyte in the working liquid tank 6 needs to be replaced, the spare electrolyte in the intermediate liquid tank 7 can directly replace the electrolyte in the working liquid tank 6, thereby improving the efficiency of liquid replacement. In addition, the heat dissipation module 8 can dissipate heat from the battery system when it is in operation, ensuring the normal operation of the battery system.

[0035] In addition, the battery system of the present disclosure may be an air battery system, such as an aluminum-air battery system, a zinc-air battery system, or a lithium-air battery system, etc., and the present disclosure is not limited to this.

[0036] In summary, the present disclosure exemplarily illustrates the use process of the box body, battery cell and battery system. When assembling the battery system, the working liquid tank 6 is directly placed in the cavity 101 of the box body 1, and the working liquid tank 6 is connected to the liquid connector 21 on the box body 1 to complete the connection between the working liquid tank 6 and the box body 1. The bottom surface of the battery stack module 5 can be connected to the liquid connector 21 and the electrical connector 22 on the first connection surface 102, so that the battery stack module 5 can be connected to the working liquid tank 6 through the liquid connector 21 and can also output electrical energy through the box body 1. At this point, the assembly of the battery cell is completed. Of course, the intermediate liquid The box 7 can also be installed on the first connecting surface 102 and arranged adjacent to the battery stack module 5 to communicate with the interior of the working fluid tank 6 for replacing the waste liquid in the working fluid tank 6. The heat dissipation module 8 can be arranged adjacent to the intermediate fluid tank 7 and / or located in the cavity 101 to dissipate heat for the electrolyte in the working fluid tank 6 or in the tube group 3 between the working fluid tank 6 and the battery stack module 5 to ensure the normal operation of the battery system. Based on this, the present disclosure simplifies the connection structure 2 between the battery stack module 5 and the working fluid tank 6 to facilitate the disassembly, assembly and replacement of the two. In addition, such an arrangement can also reduce the space occupied by the working fluid tank 6 and the battery stack module 5 after being arranged in the box body 1.

[0037] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0039] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A box, characterized in that: include: The box body has a cavity inside for storing the working fluid tank and a first connection surface outside for connecting to the stack module; and a connecting structure, provided on the first connecting surface, comprising a liquid connector and an electrical connector; The liquid connector is detachably connected to the stack module and the working fluid tank through a tube assembly, so that the electrolyte in the working fluid tank can circulate in the stack module and the working fluid tank; The electrical connector is detachably connected to the battery stack module to output electrical energy from the battery stack module.

2. The box according to claim 1, characterized in that The liquid connector includes a first liquid connector and a second liquid connector, one of the first liquid connector and the second liquid connector is connected to the working liquid tank and the battery stack module through the liquid inlet pipe group of the pipe group, and the other is connected to the working liquid tank and the battery stack module through the liquid outlet pipe group of the pipe group.

3. The box according to claim 2, characterized in that: The first liquid connector and the second liquid connector are spaced apart and arranged close to the edge of the first connecting surface.

4. The box according to claim 3, characterized in that: The first liquid connector and the second liquid connector are both configured in plurality, and the plurality of the first liquid connectors and the plurality of the second liquid connectors are alternately arranged in sequence on the first connecting surface.

5. The box according to claim 4, characterized in that: The first connecting surface is rectangular, and the plurality of first liquid connectors and the plurality of second liquid connectors are extended along an extension direction of any edge of the first connecting surface.

6. The box according to claim 1, characterized in that The box body further includes a positioning structure, which can be inserted into the box body to position the box body on the first connecting surface.

7. The box according to claim 6, characterized in that: There are multiple positioning structures, and the multiple positioning structures are located at the edge of the first connecting surface and are spaced apart along the extending direction of the edge of the first connecting surface.

8. The box according to claim 7, characterized in that: The positioning structure is configured as a convex structure.

9. A battery cell, characterized in that: It comprises a battery stack module, a working fluid tank and a box body as described in any one of claims 1-8, wherein the battery stack module is arranged on the first connection surface and connected to the electrical connector, and the working fluid tank is arranged in the cavity and connected to the battery stack module through the liquid connector.

10. A battery system, characterized in that: comprising an intermediate liquid tank, a heat dissipation module, and the battery unit according to claim 9; The intermediate liquid tank is arranged on the first connecting surface to be adjacent to the fuel cell stack module and is connected to the working liquid tank for replacing the waste liquid in the working liquid tank. The heat dissipation module is arranged in the tank body and / or the first connecting surface for cooling the electrolyte in the working liquid tank.

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