Energy-saving energy storage cabinet

Abstract

The utility model provides an energy-saving energy storage cabinet, which belongs to the technical field of energy storage cabinets and comprises a cabinet body, a cold liquid tank, a Peltier refrigerator, a heat storage water tank, a cold liquid circulating pipeline and a solar power generation panel, a battery pack is arranged in the cabinet body, the cold liquid tank and the heat storage water tank are arranged outside the cabinet body, the Peltier refrigerator is positioned between the cold liquid tank and the heat storage water tank, and the cold liquid circulating pipeline is communicated with the cold liquid circulating pipeline. The refrigerating end of the Peltier refrigerator is attached to the cold liquid tank, the heating end of the Peltier refrigerator is attached to the heat storage water tank, the cold liquid circulation pipeline is arranged in the cabinet body, the liquid inlet end and the liquid outlet end of the cold liquid circulation pipeline are both communicated with the cold liquid tank and used for cooling the battery pack, the solar power generation panel is arranged on the cabinet body and electrically connected with the Peltier refrigerator, and the solar power generation panel is arranged on the cabinet body. The power supply is used for supplying power to the Peltier refrigerator. According to the energy-saving energy storage cabinet provided by the utility model, the external solar power generation panel supplies power to the Peltier refrigerator, so that the electric power burden of the battery pack is reduced, and the charging and discharging efficiency of the energy storage cabinet is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage cabinets, and more specifically, relates to an energy-saving energy storage cabinet. Background Art

[0002] During the charging and discharging process of an energy storage cabinet, the batteries inside generate heat, necessitating timely cooling. Currently, most energy storage cabinet manufacturers install liquid cooling units within the cabinet to cool the batteries, ensuring they operate at optimal temperatures. The charge and discharge efficiency of mainstream liquid-cooled energy storage cabinets currently on the market is less than 88%, while the charge and discharge efficiency of the batteries within the cabinet is approximately 95%. This loss in efficiency is primarily due to the consumption of battery power by auxiliary electrical equipment within the cabinet, which increases the power burden on the batteries and reduces the cabinet's charge and discharge efficiency. Among the auxiliary electrical equipment, liquid cooling units consume the largest amount of power. Therefore, reducing the power consumption of auxiliary equipment is a key measure to improve the operating efficiency of energy storage cabinets. Utility Model Content

[0003] The purpose of the utility model is to provide an energy-saving energy storage cabinet, aiming to solve the problem that the auxiliary equipment of the existing liquid-cooled energy storage cabinet consumes a lot of electricity, resulting in low operating efficiency of the energy storage cabinet.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is to provide an energy-saving energy storage cabinet, comprising:

[0005] A cabinet body, wherein a battery pack is arranged in the cabinet body;

[0006] A cold liquid tank is provided outside the cabinet, and coolant is provided in the cold liquid tank;

[0007] A Peltier cooler is provided on one side of the cold liquid tank, wherein a cooling end of the Peltier cooler is in contact with the cold liquid tank and is used to cool the coolant;

[0008] a heat storage tank, provided outside the cabinet, on a side of the Peltier cooler away from the cold liquid tank, the heat storage tank being in contact with the heating end of the Peltier cooler and being used to absorb heat generated by the Peltier cooler;

[0009] A cold liquid circulation pipeline is provided in the cabinet, wherein the liquid inlet and the liquid outlet of the cold liquid circulation pipeline are both connected to the cold liquid tank for cooling the battery pack;

[0010] A solar power generation panel is arranged on the cabinet, and the solar power generation panel is electrically connected to the Peltier cooler to provide electrical energy for the Peltier cooler.

[0011] In a possible implementation, a dual power switch is provided in the cabinet, and the battery pack and the solar panel are electrically connected to the Peltier cooler through the dual power switch respectively.

[0012] In a possible implementation, the exterior of the cold liquid tank and the hot water storage tank are both wrapped with a thermal insulation layer.

[0013] In a possible implementation, the solar power generation panel is installed above the top of the cabinet through a photovoltaic bracket, and the cold liquid tank and the hot water storage tank are both arranged on the top of the cabinet and located below the solar power generation panel.

[0014] In a possible implementation, a circulation pump is connected in series to the cold liquid circulation pipeline.

[0015] In a possible implementation, a liquid level gauge is provided outside the hot water storage tank, and the liquid level gauge is in communication with the hot water storage tank for monitoring the water level in the hot water storage tank.

[0016] In a possible implementation, the upper portion of the hot water storage tank is connected to a water injection pipe, and the lower portion of the hot water storage tank is connected to a drainage pipe.

[0017] In a possible implementation, the photovoltaic support includes at least two spaced-apart and parallel beams, the solar panel is mounted on the beams, and both ends of the beams are fixed to the top of the cabinet through a first column and a second column respectively.

[0018] In one possible implementation, the top of the first column is hinged to the crossbeam, and a slider is provided on the crossbeam corresponding to one end of the second column and slides along its length direction. The second column is an electric telescopic rod, and the telescopic end of the electric telescopic rod is hinged to the slider. The electric telescopic rod is extended and retracted to rotate the crossbeam to adjust the inclination angle of the solar panel.

[0019] In one possible implementation, a controller and a temperature sensor are provided in the cabinet, the temperature sensor is electrically connected to the controller, and the controller is electrically connected to the Peltier cooler. The temperature sensor is used to sense the temperature of the battery pack and generate a temperature signal. The controller is used to receive the temperature signal and control the opening and closing of the Peltier cooler according to the temperature signal.

[0020] The beneficial effects of the energy-saving energy storage cabinet provided by the present invention are as follows: Compared with the existing technology, the energy-saving energy storage cabinet provided by the present invention utilizes a Peltier cooler, which is powered by an external solar panel. This allows the Peltier cooler to cool the coolant in the cold liquid tank, which is then transported through the cold night circulation pipeline to cool the battery pack within the cabinet. During this cooling process, the Peltier cooler does not consume the power of the battery pack, directly reducing the power burden on the battery pack and thereby improving the charging and discharging efficiency of the energy storage cabinet. Furthermore, the low cost of the Peltier cooler can also reduce the investment cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of an energy-saving energy storage cabinet provided in an embodiment of the utility model;

[0023] Figure 2 A top view of a photovoltaic support provided by an embodiment of the present utility model;

[0024] Figure 3 This is a front view of the photovoltaic bracket provided in an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Cabinet; 2. Cold liquid tank; 21. Liquid filling port; 3. Peltier cooler; 4. Hot water storage tank; 41. Water filling pipe; 42. Drain pipe; 5. Solar panel; 6. Photovoltaic bracket; 61. Crossbeam; 611. Connecting rod; 62. First column; 63. Second column; 64. Slider; 7. Liquid level gauge. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0031] See also Figure 1 , an energy-saving energy storage cabinet provided by the utility model is now described. The energy-saving energy storage cabinet includes a cabinet body 1, a cold liquid tank 2, a Peltier cooler 3, a hot water storage tank 4, a cold night circulation pipeline and a solar power generation panel 5, wherein a battery pack is provided in the cabinet body 1, the cold liquid tank 2 is provided outside the cabinet body 1, and coolant is provided in the cold liquid tank 2. The Peltier cooler 3 is provided on one side of the cold liquid tank 2, and the cooling end of the Peltier cooler 3 is in contact with the cold liquid tank 2 for cooling the coolant. The hot water storage tank 4 is provided outside the cabinet body 1 and is located on the side of the Peltier cooler 3 away from the cold liquid tank 2. The hot water storage tank 4 is in contact with the heating end of the Peltier cooler 3 for absorbing the heat generated by the Peltier cooler 3. The cold liquid circulation pipeline is provided in the cabinet body 1, and the liquid inlet and liquid outlet of the cold liquid circulation pipeline are both connected to the cold liquid tank 2 for cooling the battery pack. The solar power generation panel 5 is provided on the cabinet body 1, and the solar power generation panel 5 is electrically connected to the Peltier cooler 3 for providing electrical energy to the Peltier cooler 3.

[0032] In this embodiment, Peltier cooler 3 is based on a semiconductor material (bismuth telluride) and operates according to the Peltier effect. It can be used as an electronic component in a small heat pump. By applying a low DC voltage across both ends of Peltier cooler 3, heat flows from one end of Peltier cooler 3 to the other. At this point, the temperature at one end of Peltier cooler 3 decreases while the temperature at the other end increases. A circulating pump is connected in series to the coolant circulation pipeline and is electrically connected to the battery pack. The circulating pump circulates the coolant in the coolant tank 2, allowing the coolant in the coolant tank 2 to exchange heat with the battery pack, thereby cooling the battery pack.

[0033] Compared to existing technologies, the energy-saving energy storage cabinet provided by this utility model utilizes a Peltier cooler 3, which is powered by an external solar panel 5. This allows the Peltier cooler 3 to cool the coolant in the cold liquid tank 2, which is then transported through a cold night circulation pipeline to cool the battery pack within the cabinet 1. During this cooling process, the Peltier cooler 3 does not consume the power of the battery pack, directly reducing the power burden on the battery pack and thereby improving the charging and discharging efficiency of the energy storage cabinet.

[0034] In some embodiments, a dual power switch is provided within the cabinet 1, through which the battery pack and the solar panel 5 are electrically connected to the Peltier cooler 3. At night, when the solar panel 5 is not operating, the dual power switch can be used to switch the power supply to the Peltier cooler 3, allowing the battery pack to power the Peltier cooler 3, allowing the Peltier cooler 3 to perform cooling operations at night.

[0035] In some embodiments, a filling port 21 is provided at the upper end of the cold liquid tank 2. During use, the coolant in the cold liquid tank 2 evaporates and is consumed. This filling port 21 allows the coolant to be replenished into the cold liquid tank 2 to prevent insufficient coolant from affecting the cooling effect of the battery pack. In this embodiment, a water filling pipe 41 is connected to the upper portion of the hot water storage tank 4, a drain pipe 42 is connected to the lower portion of the hot water storage tank 4, and a liquid level gauge 7 is provided on the outside of the hot water storage tank 4. The liquid level gauge 7 is in communication with the hot water storage tank 4 and is used to monitor the water level within the hot water storage tank 4. While cooling, the Peltier cooler 3 also generates heat at the other end, which must be taken away in time. By setting up a hot water storage tank 4, the heat generated by the heating end of the Peltier cooler 3 can be absorbed in time. After absorbing the heat, the temperature of the water in the hot water storage tank 4 will rise, and it can be discharged from the hot water storage tank 4 through the provided drain pipe 42 for factory and domestic use. When the water level in the hot water storage tank 4 is too low as observed by the liquid level gauge 7, water can be added to the hot water storage tank 4 through the water injection pipe 41.

[0036] In this embodiment, the outside of the cold liquid tank 2 and the hot water storage tank 4 are both wrapped with an insulation layer by insulation material. By providing the insulation layer, heat exchange between the cold liquid tank 2 and the air can be avoided, resulting in cold loss, and heat exchange between the hot water storage tank 4 and the air can be avoided, resulting in heat loss.

[0037] In some embodiments, see Figure 1 The solar power generation panel 5 is installed on the top of the cabinet 1 through the photovoltaic bracket 6. The cold liquid tank 2 and the hot water storage tank 4 are both arranged on the top of the cabinet 1 and are located below the solar power generation panel 5. This arrangement allows the solar power generation panel 5 to provide shade for the cabinet 1 and the cold liquid tank 2 and the hot water storage tank 4 on the cabinet 1. On the one hand, it reduces the heating effect of the external environment on the cabinet 1. On the other hand, it avoids direct sunlight on the cold liquid tank 2 and the hot water storage tank 4, reducing the aging speed of the cold liquid tank 2 and the hot water storage tank 4. In addition, the installation of the solar photovoltaic panel 5 does not require additional land and ground piles, which makes rational use of space and avoids rainwater erosion causing problems with the appearance and performance of the cabinet 1.

[0038] In some embodiments, see Figures 1 to 3 The photovoltaic bracket 6 includes at least two spaced and parallel beams 61, and the solar panel 5 is mounted on the beam 61. The two ends of the beam 61 are fixed to the top of the cabinet 1 through the first column 62 and the second column 63. In this embodiment, the number of beams 61 is two, and a connecting rod 611 is connected between the two ends of the two beams 61. The connecting rod 611 connects the two beams 61 into one, thereby increasing the structural strength. In this embodiment, the bottom of the first column 62 is bolted to the top of the cabinet 1, and the top of the first column 62 is fixed to the top of the cabinet 1. It is hinged to the crossbeam 61, and a slider 64 is provided on the crossbeam 61 corresponding to one end of the second column 63, which slides along its length direction. The second column 63 is an electric telescopic rod, which is longitudinally arranged on the top of the cabinet 1. The fixed end of the electric telescopic rod is bolted to the cabinet 1, and the telescopic end of the electric telescopic rod is hinged to the slider 64. In use, the electric telescopic rod can drive the crossbeam 61 to rotate around the hinge between the first column 62 and the crossbeam 61, so that the inclination angle of the solar panel 5 can be adjusted to achieve the optimal illumination angle between the photovoltaic panel and the sunlight.

[0039] In some embodiments, a controller and a temperature sensor are further provided within the cabinet 1. The temperature sensor is electrically connected to the controller, which is electrically connected to the Peltier cooler 3 and the circulating pump, respectively. The temperature sensor is used to sense the temperature of the battery pack and generate a temperature signal. The controller is used to receive the temperature signal and control the Peltier cooler 3 and the circulating pump to start and stop according to the temperature signal. Specifically, when the temperature sensor detects that the battery pack temperature exceeds a predetermined temperature, the controller controls the circulating pump and the Peltier cooler 3 to start and cool the battery pack. When the temperature sensor detects that the battery pack temperature is within the predetermined temperature, the controller controls the circulating pump and the Peltier cooler 3 to stop.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An energy-saving energy storage cabinet, characterized in that: include: A cabinet (1), wherein a battery pack is provided in the cabinet (1); A cold liquid tank (2) is arranged outside the cabinet (1), and a cooling liquid is arranged in the cold liquid tank (2); A Peltier cooler (3) is provided on one side of the cold liquid tank (2), and a cooling end of the Peltier cooler (3) is in contact with the cold liquid tank (2) for cooling the coolant; A heat storage tank (4) is provided outside the cabinet (1) and is located on a side of the Peltier cooler (3) away from the cold liquid tank (2); the heat storage tank (4) is in contact with the heating end of the Peltier cooler (3) and is used to absorb heat generated by the Peltier cooler (3); A cold liquid circulation pipeline is provided in the cabinet (1), wherein the liquid inlet and the liquid outlet of the cold liquid circulation pipeline are both connected to the cold liquid tank (2) for cooling the battery pack; A solar power generation panel (5) is provided on the cabinet (1); the solar power generation panel (5) is electrically connected to the Peltier cooler (3) and is used to provide electrical energy to the Peltier cooler (3).

2. The energy-saving energy storage cabinet according to claim 1, characterized in that: A dual power supply switch is provided in the cabinet (1), and the battery pack and the solar power generation panel (5) are electrically connected to the Peltier cooler (3) via the dual power supply switch.

3. The energy-saving energy storage cabinet according to claim 1, characterized in that: The exteriors of the cold liquid tank (2) and the hot water storage tank (4) are both wrapped with a thermal insulation layer.

4. The energy-saving energy storage cabinet according to claim 1, characterized in that: The solar power generation panel (5) is installed above the top of the cabinet (1) through a photovoltaic bracket (6); the cold liquid tank (2) and the hot water storage tank (4) are both arranged on the top of the cabinet (1) and located below the solar power generation panel (5).

5. The energy-saving energy storage cabinet according to claim 1, characterized in that: A circulation pump is connected in series on the cold liquid circulation pipeline.

6. The energy-saving energy storage cabinet according to claim 1, characterized in that: A liquid level meter (7) is provided outside the hot water storage tank (4), and the liquid level meter (7) is in communication with the hot water storage tank (4) and is used to monitor the water level in the hot water storage tank (4).

7. The energy-saving energy storage cabinet according to claim 6, characterized in that: The upper portion of the hot water storage tank (4) is connected to a water injection pipe (41), and the lower portion of the hot water storage tank (4) is connected to a drainage pipe (42).

8. The energy-saving energy storage cabinet according to claim 4, characterized in that: The photovoltaic support (6) comprises at least two spaced and parallel beams (61), the solar panel (5) is mounted on the beams (61), and the two ends of the beams (61) are fixed to the top of the cabinet (1) via a first column (62) and a second column (63), respectively.

9. The energy-saving energy storage cabinet according to claim 8, characterized in that: The top of the first column (62) is hinged to the crossbeam (61); a slider (64) is provided on the crossbeam (61) corresponding to one end of the second column (63) and sliding along its length direction; the second column (63) is an electric telescopic rod; the telescopic end of the electric telescopic rod is hinged to the slider (64); the electric telescopic rod is extended and retracted to rotate the crossbeam (61) to adjust the inclination angle of the solar panel (5).

10. The energy-saving energy storage cabinet according to claim 1, characterized in that: A controller and a temperature sensor are provided in the cabinet (1); the temperature sensor is electrically connected to the controller, and the controller is electrically connected to the Peltier cooler (3); the temperature sensor is used to sense the temperature of the battery pack and generate a temperature signal; the controller is used to receive the temperature signal and control the opening and closing of the Peltier cooler (3) according to the temperature signal.

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