Full liquid cooling energy storage cabinet
The fully liquid-cooled energy storage cabinet solves the heat dissipation problem of traditional energy storage cabinets in high-heat or sandstorm environments through the design of liquid cooling plates and liquid cooling units, achieving efficient cooling and airtightness, and improving system reliability and maintenance convenience.
Patent Information
- Application Number
- CN202423244016.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Traditional energy storage cabinets cannot dissipate heat in time in high-heat or sandy environments, resulting in heat accumulation and heat island effect, which affects reliability and safety. In addition, air-cooling methods are susceptible to dust intrusion.
The system adopts a fully liquid-cooled energy storage cabinet design, which is thermally connected to the energy storage PACK and converter through a liquid cooling plate. Combined with the liquid cooling unit and heat transfer medium, it achieves efficient cooling. A mixed solution of ethanol and pure water is used as the coolant, and the coolant is circulated to dissipate heat.
The energy storage cabinet has improved airtightness and cooling performance, adapts to harsh environments, enhances system reliability and ease of maintenance, and ensures stable device temperature.
Smart Images
Figure CN223771165U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of heat dissipation technology for energy storage cabinets, and particularly relates to a fully liquid-cooled energy storage cabinet. Background Technology
[0002] Traditional energy storage cabinets often use air cooling to dissipate heat from the energy storage converter and even the battery pack. In some hot regions or sites, this can lead to insufficient heat dissipation, resulting in heat accumulation and a heat island effect, posing potential reliability and safety risks. Furthermore, compared to air cooling, liquid-cooled cabinets offer better sealing and are more effective at handling harsh weather conditions such as sandstorms. In summary, fully liquid-cooled energy storage cabinets, by simultaneously cooling the energy storage battery pack and energy storage converter through a single liquid cooling unit, effectively enhance system reliability and adaptability to complex environments, promoting the development of energy storage technology and meeting the needs of new energy consumption.
[0003] After the battery modules are installed in the enclosure, the entire system, including the enclosure, is called a PACK. An energy storage converter is a power conversion system, mainly composed of a DC / AC bidirectional converter and a control unit. It can invert the direct current (DC) from the battery into alternating current (AC) to supply the grid or power AC loads; simultaneously, it can also rectify the grid's AC power back into DC to charge the battery. Liquid cooling units utilize the high thermal conductivity of liquids, using pumps to transport liquid from the condenser to the equipment or system requiring cooling, absorbing the heat generated by the equipment, and then flowing back to the condenser for further cooling, repeating the cycle to achieve efficient cooling. Utility Model Content
[0004] The purpose of this disclosure is to provide a fully liquid-cooled energy storage cabinet that can at least solve one of the above-mentioned technical problems.
[0005] To achieve the above objectives, one or more embodiments of this disclosure provide a fully liquid-cooled energy storage cabinet, including a cabinet body, in which an energy storage PACK and an energy storage converter are disposed; the energy storage PACK and the energy storage converter are thermally connected to a liquid-cooled plate; a water pipe is laid inside the liquid-cooled plate, and has inlet and outlet water interfaces; a liquid-cooling unit is also disposed inside the cabinet body, the liquid-cooling unit being connected to the water pipe in the liquid-cooled plate through a liquid-cooling pipe, the liquid-cooling unit being used to supply coolant to the liquid-cooling pipe.
[0006] Furthermore, the cabinet is also equipped with an energy storage PACK bracket for placing the energy storage PACK.
[0007] Furthermore, the energy storage converter is located in the cabinet below the energy storage PACK bracket.
[0008] Furthermore, the energy storage converter has a liquid cooling plate inside it, and an inlet and an outlet connected to the liquid cooling pipeline are provided on the outer surface of the energy storage converter.
[0009] Furthermore, the energy storage PACK support has multiple layers for placing multiple layers of energy storage PACKs.
[0010] Furthermore, a heat-conducting medium and a liquid cooling plate are respectively provided below each layer of energy storage PACK, and the liquid cooling plate is thermally connected to the layer of energy storage PACK through the heat-conducting medium.
[0011] Furthermore, the thermally conductive medium is a thermally conductive silicone pad.
[0012] Furthermore, the liquid cooling unit drives the coolant to circulate within the liquid cooling pipeline.
[0013] Furthermore, the coolant is a mixed solution of ethanol and pure water.
[0014] Furthermore, the liquid cooling pipeline includes two lines. One end of the right liquid cooling pipeline is connected to the right outlet of the liquid cooling unit, and the other end is connected to multiple inlet liquid cooling branches. Each inlet liquid cooling branch is connected to the right inlet of a liquid cooling plate. One end of the left liquid cooling pipeline is connected to the left inlet of the liquid cooling unit, and the other end is connected to multiple outlet liquid cooling branches. Each outlet liquid cooling branch is connected to the left outlet of a liquid cooling plate.
[0015] The beneficial effects of one or more of the above technical solutions are as follows:
[0016] This utility model adopts a liquid-cooled energy storage cabinet, which has a higher level of protection and airtightness than the existing air-cooled energy storage cabinet. It is free from the limitation of dust entering the air-cooled type, making it easier to adapt to harsh environments. The layout of components inside the cabinet is more convenient for later maintenance. At the same time, liquid cooling has better heat dissipation performance than air cooling, making it easier to adapt to high-heat areas. Attached Figure Description
[0017] The dimensions and scales in the accompanying drawings do not represent the actual dimensions and scales of the product. The drawings are for illustrative purposes only, and some non-essential elements or features have been omitted for clarity.
[0018] Figure 1 , Figure 2 This is a schematic diagram of the internal structure of the liquid-cooled energy storage cabinet of this utility model.
[0019] Figure 3 , Figure 4 This is a schematic diagram of the liquid cooling pipeline of the liquid-cooled energy storage cabinet of this utility model.
[0020] The attached diagram is labeled as follows: 1. Energy storage PACK; 2. Energy storage converter; 3. Liquid cooling unit; 4. Liquid cooling pipeline; 5. Liquid cooling unit inlet; 6. Liquid cooling unit outlet; 7. Liquid cooling plate outlet; 8. Liquid cooling plate inlet; 9. High-voltage box; 10. Fire protection system; 11. Distribution box. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0024] In this utility model, terms such as "upper", "lower", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.
[0025] In this utility model, terms such as "connection" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of the above terms in this utility model based on the specific circumstances, and they should not be construed as limitations on this utility model.
[0026] Where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0027] The fully liquid-cooled energy storage cabinet includes a liquid-cooled energy storage cabinet body; the cabinet body includes an energy storage PACK bracket, an energy storage PACK1 is mounted on the energy storage PACK bracket, and an energy storage converter 2 is mounted below the energy storage PACK bracket inside the cabinet body; the bottom of the energy storage PACK1 is connected to the liquid cooling plate through a heat-conducting medium; the energy storage converter 2 has a liquid cooling plate installed inside;
[0028] The liquid cooling plate has an S-shaped water pipe inside and two interfaces: the left side is the water outlet 7 and the right side is the water inlet 8.
[0029] A liquid-cooled unit 3 is located on one side of the energy storage PACK bracket within the cabinet. The liquid-cooled unit 3 is connected to the liquid-cooled plate below the energy storage PACK 1 and the liquid-cooled interface of the energy storage converter 2 via liquid-cooled pipes 4. The liquid-cooled unit 3 has an inlet 5 on its left and an outlet 6 on its right. The liquid-cooled pipes 4 contain coolant. The liquid-cooled unit 3 operates in three modes: cooling, heating, and self-circulation. The unit defaults to self-circulation mode, where heat is transferred to the coolant, which is then heated. The coolant continuously circulates within the liquid-cooled pipes 4. The cooling mode is activated once the unit detects that a certain temperature has been reached. The coolant is a mixture of ethanol and pure water.
[0030] The liquid cooling pipeline 4 includes two lines. One end of the right-side liquid cooling pipeline 4 is connected to the right outlet of the liquid cooling unit 3, and the other end is connected to multiple inlet liquid cooling branches. Each inlet liquid cooling branch is connected to the right inlet of a liquid cooling plate. The other end of the left-side liquid cooling pipeline 4 is connected to the left inlet of the liquid cooling unit 3, and the other end is connected to multiple outlet liquid cooling branches. Each outlet liquid cooling branch is connected to the left outlet of a liquid cooling plate. The liquid cooling unit 3 drives the coolant to circulate within the liquid cooling pipeline 4 and the liquid cooling plates, achieving efficient cooling of the cabinet. Furthermore, the simultaneous cooling of the energy storage PACK 1 and the energy storage converter 2 by the liquid cooling unit 3 effectively enhances system reliability and cooling timeliness.
[0031] Compared to existing air-cooled or air-cooled plus liquid-cooled combined cooling methods, the energy storage cabinet of this invention has better airtightness and cooling performance, so it can be used in sandy or high-heat environments.
[0032] The cabinet contains an energy storage PACK bracket for housing the energy storage PACK1. The energy storage converter 2 is located inside the energy storage cabinet below the energy storage PACK bracket. The bracket provides space for the liquid cooling plate and also facilitates the independent heat dissipation of the energy storage PACK1. As the component that directly connects to external cables, placing the energy storage converter 2 below the energy storage cabinet facilitates its connection to the outside.
[0033] A layer of thermally conductive medium is laid between each energy storage PACK1 and the liquid cooling plate, making heat transfer between the energy storage PACK1 and the liquid cooling plate more efficient. The thermally conductive medium is a thermally conductive silicone pad, which is easy to install and can be laid directly, resulting in higher assembly efficiency and good thermal conductivity.
[0034] Specifically, when the equipment is running, the energy storage PACK1 and the liquid-cooled energy storage converter 2 will generate a lot of heat. This heat is conducted to the bottom of the energy storage PACK1 and the cold plate inside the energy storage converter 2 through the heat transfer medium. Then, the coolant is driven by the liquid cooling unit 3 to circulate through the same liquid cooling pipeline 4 and pass through each cold plate, quickly carrying away the heat to cool it down, thereby maintaining a stable temperature range inside the battery pack and the energy storage converter 2.
[0035] The high-voltage box 9, fire protection system 10, power distribution box 11, and energy storage converter 2 work together to complete the operation of the entire energy storage cabinet, realizing energy conversion, storage, and safety assurance.
[0036] The scope of protection of this utility model is defined only by the claims. Thanks to the teachings of this utility model, those skilled in the art will readily recognize that alternative structures to the disclosed structure can be used as feasible alternative implementations, and that the disclosed implementations can be combined to produce new implementations, which also fall within the scope of the appended claims.
Claims
1. A fully liquid-cooled energy storage tank, characterized by, The cabinet is internally provided with an energy storage PACK and an energy storage converter; the energy storage PACK and the energy storage converter are in heat conduction connection with a liquid cooling plate; the liquid cooling plate is internally provided with a water flow pipeline and has water inlet and outlet interfaces; the cabinet is further internally provided with a liquid cooling unit; the liquid cooling unit is in communication with the water flow pipeline in the liquid cooling plate through a liquid cooling pipeline; and the liquid cooling unit is used for supplying coolant to the liquid cooling pipeline.
2. The all-liquid cooled energy storage tank of claim 1, wherein, The cabinet is further internally provided with an energy storage PACK support for placing the energy storage PACK.
3. The all-liquid cooled energy storage tank of claim 2, wherein, The energy storage converter is arranged in the cabinet below the energy storage PACK support.
4. The all-liquid cooled energy storage tank of claim 1, wherein, The energy storage converter liquid cooling plate is internally provided with a water inlet and a water outlet connected with the liquid cooling pipeline on the outer surface of the energy storage converter.
5. The all-liquid cooled energy storage tank of claim 2, wherein, The energy storage PACK support has multiple layers for placing multiple layers of energy storage PACKs.
6. The all-liquid cooled energy storage tank of claim 5, wherein, A heat conduction medium and a liquid cooling plate are correspondingly arranged below each layer of energy storage PACKs; and the liquid cooling plate is in heat conduction connection with the layer of energy storage PACKs through the heat conduction medium.
7. The all-liquid cooled energy storage tank of claim 6, wherein, The heat conduction medium is a heat conduction silica gel pad.
8. The all-liquid cooled energy storage tank of claim 1, wherein, The liquid cooling unit drives the coolant to circulate and flow in the liquid cooling pipeline.
9. The all-liquid cooled energy storage tank of claim 1, wherein, The coolant is a mixed solution of ethanol and pure water.
10. The all-liquid cooled energy storage tank of claim 1, wherein, The liquid cooling pipeline includes two pipelines; one end of the right side liquid cooling pipeline is connected with the right side water outlet of the liquid cooling unit, and the other end is connected with multiple water inlet liquid cooling branches; each water inlet liquid cooling branch is connected with the right side water inlet of one liquid cooling plate; one end of the left side liquid cooling pipeline is connected with the left side water inlet of the liquid cooling unit, and the other end is connected with multiple water outlet liquid cooling branches; and each water outlet liquid cooling branch is connected with the left side water outlet of one liquid cooling plate.