Battery cabinet with heat management function and use method thereof

Abstract

The invention provides a battery cabinet with heat management and a use method thereof, the battery cabinet is formed by stacking a plurality of battery packs up and down, each battery pack is composed of a battery box body, and a battery module, a liquid cooling plate, a heat conduction block and a heat conduction film which are arranged in the battery box body; a top cover is mounted on the top layer of the battery box body, and a bottom support is mounted on the bottom layer of the battery box body; the liquid cooling plate is mounted above the battery module, heat conduction blocks arranged in an array are mounted on the upper surface of the liquid cooling plate, and heat conduction films are mounted on the heat conduction blocks; when the two battery packs are stacked up and down, the bottom of the top cover is in close contact with the heat conducting film in the bottom support. The top and the bottom of the battery module in the battery pack are simultaneously heated / cooled through the liquid cooling plate, the three-dimensional temperature field of the battery is more uniform, and the service life of the battery is prolonged.

Description

Technical Field

[0001] This invention relates primarily to the field of energy storage technology, specifically to a battery cabinet with thermal management and its usage method. Background Technology

[0002] With the development of new energy technologies, battery cabinets, as the core equipment of energy storage systems, have attracted much attention regarding their safety, reliability, and energy density. Batteries generate a large amount of heat during charging and discharging; if this heat cannot be dissipated in time, it can lead to excessively high battery temperatures, affecting battery performance and lifespan, and even causing safety accidents.

[0003] Existing battery cabinets typically cool or heat the bottom or sides of the batteries, but neglect the areas where the batteries generate the most heat, such as the terminals and inter-cell connectors. This results in uneven three-dimensional temperature distribution within the batteries, affecting battery performance. Furthermore, the traditional battery cabinet design requires additional connectors and insulation between battery packs, increasing the cabinet's size and weight. Summary of the Invention

[0004] This invention provides a battery cabinet with thermal management and its usage method to solve the technical problems mentioned in the background section.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0006] A battery cabinet with thermal management includes multiple battery packs stacked on top of each other. The battery pack consists of a battery box, battery modules, liquid cooling plates, heat-conducting blocks and heat-conducting films inside the battery box.

[0007] A top cover is installed at the top of the battery box, and a bottom support is installed at the bottom of the battery box.

[0008] The liquid cooling plate is installed on top of the battery module, and an array of heat-conducting blocks are installed on the upper surface of the liquid cooling plate. A heat-conducting film is attached to the heat-conducting blocks. When multiple battery packs are stacked one on top of the other, the bottom of the battery box of the upper battery pack is in close contact with the heat-conducting film in the lower battery pack.

[0009] Furthermore, multiple battery modules are installed inside the battery housing, and a liquid cooling plate is installed on top of the battery modules.

[0010] Furthermore, the heat-conducting block is attached to the liquid cooling plate by pasting or welding, and the heat-conducting film is pasted onto the heat-conducting block.

[0011] Furthermore, the heat-conducting block is made of an insulating, lightweight, and rigid material with a thermal conductivity of ≥20W / mK.

[0012] Furthermore, the thermal conductive film is made of an insulating, lightweight, and elastic material with a thermal conductivity ≥2W / mK.

[0013] Based on the above technical solution for a battery cabinet with thermal management, a method for using a battery cabinet with thermal management will also be provided, including the following steps:

[0014] Step 1: Stack multiple battery packs one on top of the other to form a battery cabinet. When stacking, make sure that the bottom of the battery box of the upper battery pack is in close contact with the heat-conducting film in the lower battery pack.

[0015] Step 2: When the battery module temperature exceeds the set threshold, the liquid cooling system is activated, and the liquid cooling plate heats or cools the upper part of the battery module in the battery pack.

[0016] Step 3: The heat / cold energy in the liquid cooling plate is conducted to the bottom of the battery modules in the upper battery pack through the heat-conducting block, heat-conducting film, and battery box of the upper battery pack for heating or cooling.

[0017] Furthermore, during the stacking of battery packs in step one, the bottom of the upper battery box and the thermal conductive film in the lower battery pack are tightly bonded together with large-area contact.

[0018] Furthermore, through steps two and three, the top and bottom of the battery module can be heated or cooled simultaneously.

[0019] Furthermore, by increasing the number of battery packs stacked vertically, the volume of the battery cabinet can be easily and quickly expanded, and the battery capacity of the cabinet can be increased.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] Firstly, this invention uses a liquid cooling plate to heat / cool the top of the battery modules within the battery pack, while simultaneously transferring heat / cooling to the upper battery pack's battery housing via heat-conducting blocks and films, thus regulating the temperature of the bottom of the upper battery modules. This top-plus-bottom bidirectional thermal management method results in a more uniform three-dimensional temperature field for the battery modules, preventing performance degradation caused by localized overheating or overcooling and extending battery life.

[0022] Secondly, in this invention, the battery box serves as both the base support for its own battery modules and the top cover for the upper battery pack, eliminating the need for additional support or isolation components in traditional structures. This significantly reduces the overall weight of the battery cabinet, saves stacking space, and increases the energy storage density per unit volume.

[0023] Third, the present invention allows multiple battery packs to be stacked up and down to quickly form a battery cabinet, and the volume and total capacity of the battery cabinet can be flexibly expanded by increasing the number of stacks, adapting to the energy storage needs in different scenarios. The deployment process is simple and efficient, without the need for complicated assembly procedures.

[0024] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is an exploded view of the present invention;

[0026] Figure 2 This is a schematic diagram of the liquid cooling plate of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the heat-conducting block and heat-conducting film of the present invention;

[0028] Figure 4 This is a flowchart of the present invention.

[0029] In the diagram: 1. Top cover; 2. Liquid cooling plate; 3. Battery module; 4. Battery housing; 5. Base support; 6. Heat-conducting block; 7. Heat-conducting film. Detailed Implementation

[0030] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] This application provides a battery cabinet with thermal management and its usage method. A schematic diagram of the battery cabinet with thermal management is shown below. Figure 1-4 As shown. The battery cabinet with thermal management consists of multiple battery packs stacked on top of each other. The battery pack is composed of a battery box 4, a battery module 3, a liquid cooling plate 2, a heat-conducting block 6 and a heat-conducting film 7 inside the battery box;

[0034] A top cover 1 is installed on the top layer of the battery box 4, and a bottom support 5 is installed on the bottom layer of the battery box 4.

[0035] The liquid cooling plate 2 is installed above the battery module 3. The upper surface of the liquid cooling plate 2 is equipped with an array of heat-conducting blocks 6, and the heat-conducting film 7 is pasted on the heat-conducting blocks 6. When multiple battery packs are stacked up and down, the bottom of the battery box 4 of the upper battery pack is in close contact with the heat-conducting film 7 in the lower battery pack.

[0036] It should be noted that in this embodiment, multiple battery packs are stacked one on top of the other to form a battery cabinet. Through the close contact between the bottom of the battery box 4 of the upper battery pack and the heat-conducting film 7 in the lower battery pack, a stable heat / cold transfer channel is constructed at the bottom of the battery module in the upper battery pack, providing a structural basis for the bidirectional thermal management of the battery module 3.

[0037] The stacking design makes the battery cabinet structure compact and allows for flexible adjustment of the number of battery packs stacked according to needs, balancing space utilization and expandability.

[0038] Optional, please refer to the appendix Figure 1 Each battery box contains multiple battery modules 3, and a liquid cooling plate 2 is installed on the top of each battery module 3.

[0039] In this embodiment, multiple battery modules 3 are installed inside each battery pack housing, and a liquid cooling plate 2 is installed on top of the battery modules.

[0040] Optional, please refer to the appendix Figure 2 and 3 A heat-conducting block 6 is attached or welded to the upper surface of the liquid cooling plate 2, and a heat-conducting film is attached to the heat-conducting block 6.

[0041] In this embodiment, the liquid cooling plate 2 and the heat-conducting block 6 are connected by adhesive or welding, and the heat-conducting block 6 and the heat-conducting film are connected by adhesive to ensure tight fit between the components and improve the heat / cold conduction rate.

[0042] The above process is simple, easy to mass-produce and assemble, and can improve manufacturing efficiency.

[0043] Optional, please refer to the appendix Figure 1 and 2 The heat-conducting block 6 is made of insulating, lightweight, and rigid material with a thermal conductivity of ≥20W / mK. The material of the heat-conducting block 6 can be ceramic, corundum, quartz, etc.

[0044] In this embodiment, the heat-conducting block 6 is made of rigid, lightweight ceramic material with a thermal conductivity of ≥20W / mK, which can efficiently transfer heat / cold energy, maintain structural stability due to its rigidity, and reduce the overall weight of the battery cabinet due to its lightweight properties.

[0045] Optional, please refer to the appendix Figure 1 and 2The thermal conductive film 7 is made of insulating, lightweight, and elastic material with a thermal conductivity of ≥2W / mK; the material of the thermal conductive film 7 can be thermally conductive silicone sheet or thermally conductive polyurethane film, etc.

[0046] In this embodiment, the thermal conductive film 7 is an insulating, lightweight, and elastic thermal conductive silicone sheet with a thermal conductivity of ≥2W / mK. While ensuring the heat conduction rate, the insulation properties can effectively prevent short circuits between batteries when installing the liquid cooling plate; the elastic properties ensure close contact with the bottom of the upper battery box 4, increasing the heat conduction area.

[0047] Based on the same inventive concept, this embodiment also provides a method for using a battery cabinet with thermal management, including the following steps:

[0048] Step 1: Stack multiple battery packs one on top of the other to form a battery cabinet. When stacking, ensure that the bottom of the battery box 4 of the upper battery pack is in close contact with the heat-conducting film 7 in the lower battery pack.

[0049] Step 2: When the battery module temperature exceeds the set threshold, the liquid cooling system is activated, and the liquid cooling plate 2 heats or cools the upper part of the battery module 3 in the battery pack.

[0050] Step 3: The heat / cold energy in the liquid cooling plate 2 is conducted to the bottom of the battery module 3 in the upper battery pack through the heat-conducting block 6, the heat-conducting film 7, and the battery box 4 of the upper battery pack for heating or cooling.

[0051] In this embodiment, the stacking operation in step one is simple, which can quickly assemble the battery cabinet and ensure the heat transfer path; steps two and three realize the bidirectional thermal regulation of the liquid cooling plate 2 on its own battery pack and the upper battery pack, so that the temperature regulation of the battery module 3 is faster and more accurate.

[0052] Optional, please refer to the appendix Figure 1 and 3 In step one, when stacking the battery packs, the bottom of the top cover 1 is tightly bonded to the thermal conductive film 7 in the lower battery pack with a large surface contact.

[0053] In this embodiment, the bottom of the top cover 1 is closely attached to the large surface of the lower heat-conducting film 7, which increases the heat exchange area and improves the heat / cold transfer rate.

[0054] Optional, please refer to the appendix Figure 1 and 3 Steps two and three are performed simultaneously to heat or cool the top and bottom of battery module 3 at the same time.

[0055] In this embodiment, steps two and three are performed simultaneously to achieve simultaneous heating / cooling of the top and bottom of the battery module 3, making the three-dimensional temperature field of the battery more uniform and avoiding the battery performance and lifespan being affected by excessive local temperature differences.

[0056] Optional, please refer to the appendix Figure 1 and 3 It also includes increasing the number of stacked battery packs, expanding the volume of the battery cabinet, and increasing the battery cabinet's capacity.

[0057] In this embodiment, the volume and capacity of the battery cabinet are expanded by increasing the number of stacked battery packs. The expansion method is flexible and convenient, and can adapt to the energy storage needs of different scenarios, thereby improving the applicability and practicality of the battery cabinet.

[0058] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A battery cabinet with thermal management, characterized in that, It includes multiple battery packs stacked on top of each other, and the battery pack consists of a battery box (4), a battery module (3), a liquid cooling plate (2), a heat-conducting block (6) and a heat-conducting film (7) inside the battery box (4); The top of the battery box (4) is equipped with a top cover (1), and the bottom of the battery box (4) is equipped with a bottom support (5). The liquid cooling plate (2) is installed on the top of the battery module (3). The upper surface of the liquid cooling plate (2) is equipped with an array of heat-conducting blocks (6), and a heat-conducting film (7) is installed on the heat-conducting blocks (6). When multiple battery packs are stacked up and down, the bottom of the battery box (4) of the upper battery pack is in close contact with the heat-conducting film (7) in the lower battery pack.

2. The battery cabinet with thermal management according to claim 1, characterized in that, Multiple battery modules (3) are installed inside the battery housing (4).

3. The battery cabinet with thermal management according to claim 1, characterized in that, The heat-conducting block (6) is attached to the liquid cooling plate (2) by pasting or welding, and the heat-conducting film (7) is attached to the heat-conducting block (6).

4. The battery cabinet with thermal management according to claim 1, characterized in that, The heat-conducting block (6) is made of insulating, lightweight, and rigid material with a thermal conductivity of ≥20W / mK.

5. The battery cabinet with thermal management according to claim 1, characterized in that, The thermal conductive film (7) is made of insulating, lightweight, and elastic material with a thermal conductivity of ≥2W / mK.

6. A method of using a battery cabinet with thermal management, for implementing the battery cabinet with thermal management as described in any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Stack multiple battery packs one on top of the other to form a battery cabinet. When stacking, make the bottom of the battery box (4) of the upper battery pack in close contact with the heat-conducting film (7) in the lower battery pack. Step 2: When the temperature of the battery module (3) exceeds the set threshold, the liquid cooling system is activated, and the liquid cooling plate (2) heats or cools the upper part of the battery module (3) in the battery pack. Step 3: The heat / cold energy in the liquid cooling plate (2) is conducted to the bottom of the battery module (3) in the upper battery pack through the heat-conducting block (6), the heat-conducting film (7), and the battery box (4) of the upper battery pack for heating or cooling.

7. The method of using the battery cabinet with thermal management according to claim 6, characterized in that, When installing the battery pack in the stacked manner in step one, the bottom of the top cover (1) is closely attached to the heat-conducting film (7) in the battery pack in a large-area contact manner.

8. The method of using the battery cabinet with thermal management according to claim 6, characterized in that, Through steps two and three, the top and bottom of the battery module (3) can be heated or cooled simultaneously.

9. The method of using the battery cabinet with thermal management according to claim 6, characterized in that, By increasing the number of battery packs stacked vertically, the volume of the battery cabinet is expanded and the battery capacity of the cabinet is increased.

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