Hot air isolation type energy storage box

Abstract

The utility model discloses a hot air isolation type energy storage box, which belongs to the technical field of battery energy storage and comprises a box body, the box body is formed by combining a door body and a plate body, airflow cavities are arranged on bodies of the door body and the plate body, a plurality of groups of air heating devices are arranged in an inner cavity of the box body, and the air heating devices can generate hot air flow. Airflow outlets of the multiple sets of air heating devices communicate with the airflow cavities in the corresponding positions, and hot air isolation layers are formed on the door body and the plate body by filling hot air flow into the airflow cavities; therefore, according to the scheme, a hot air isolation layer capable of effectively isolating cold air is formed on the wall of the box body through the airflow cavity and the air heating device, then the purpose of heat preservation of the energy storage box is achieved, the overall service life of the energy storage box in a low-temperature environment is prolonged, and the safety of the energy storage box in the low-temperature environment is improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery energy storage technology, and in particular relates to a hot air isolated energy storage box. Background Technology

[0002] Energy storage power stations play a vital role in supplementing the power grid and adjusting peak and valley loads. When the load is low or there is no power curtailment, intermittent renewable energy or the power grid charges the energy storage system; when the load is high or there is power curtailment, the energy storage device discharges to the power grid as a backup capacity, playing a role in peak shaving and valley filling.

[0003] Currently, traditional energy storage devices typically use external air conditioning systems for temperature control to ensure that the battery cells in the energy storage system are in a suitable temperature environment. However, this method is only suitable for outdoor environments with temperatures around -40°C, and it is difficult to meet the requirements of outdoor environments with temperatures below -40°C.

[0004] Therefore, based on the above phenomena, designing a solution that can effectively prevent cold air from entering the energy storage box is a technical problem that this application urgently needs to solve. Utility Model Content

[0005] The purpose of this invention is to provide a hot air isolation type energy storage box, which can effectively isolate cold air from entering the box 100, provide the best operating temperature for the battery pack inside the energy storage box, and improve the overall lifespan and safety of the energy storage box.

[0006] This application provides a hot air isolation type energy storage box, including a box body composed of a door and a panel. Both the door and the panel are provided with airflow cavities, and multiple sets of air heating devices are provided in the inner cavity of the box body. The air heating devices can generate hot airflow. The airflow outlets of the multiple sets of air heating devices are connected to the airflow cavities at corresponding positions. By filling the airflow cavities with hot airflow, a hot air isolation layer is formed on the door and the panel.

[0007] As a preferred embodiment of this application: the main body of the door and the panel is a thermal insulation composite structure, which includes an outer protective layer, a thermal insulation and flame retardant layer and an inner lining layer from the outside to the inside, and the airflow cavity is disposed on the thermal insulation and flame retardant layer.

[0008] As a preferred embodiment of this application: the heat-insulating and flame-retardant layer is a sandwich cavity structure, which penetrates at least one side of the heat-insulating and flame-retardant layer to form the airflow cavity.

[0009] As a preferred embodiment of this application: the thermal insulation and flame retardant layer comprises thermal insulation material and flame retardant material, the thermal insulation material is disposed on the side close to the outer protective layer, the flame retardant material is disposed on the side close to the inner lining layer, and the airflow cavity is disposed on the flame retardant material.

[0010] As a preferred embodiment of this application, both the outer protective layer and the inner lining layer are made of steel plates.

[0011] As a preferred embodiment of this application: the main body of the door and the plate is provided with an installation cavity communicating with the airflow cavity, and the air heating device is fixed in the installation cavity and forms an integral part with the main body.

[0012] As a preferred embodiment of this application: the air heating device includes a heating element, a heat dissipation element, and a control unit. The heating element is capable of generating heat energy, and the heat dissipation element can release the heat energy to the outside to generate a hot airflow.

[0013] As a preferred embodiment of this application, the air heating device is a fan heater.

[0014] As a preferred embodiment of this application, the fan heater specifically adopts the TX030-CR series fan heater.

[0015] Compared with the prior art, this utility model has significant advantages:

[0016] This application improves the door and panel structure of the energy storage box. Specifically, an airflow cavity is provided on the main body of the door and panel, and multiple sets of air heating devices are also installed inside the box. These air heating devices can heat the air to generate hot airflow. The air heating devices are connected to the airflow cavity, and by filling the airflow cavity with hot airflow, a hot air insulation layer is formed on the door and panel. At the same time, a hot air insulation layer is also generated at the joint between the door and panel. This hot air insulation layer can effectively prevent external cold air from entering the box. It can be seen that this solution forms a hot air insulation layer on the box wall through the airflow cavity and air heating devices, which can effectively isolate cold air, thereby achieving the purpose of heat preservation of the energy storage box and improving the overall lifespan and safety of the energy storage box in low-temperature environments. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the hot air isolation type energy storage box provided in the embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of a door provided in an embodiment of the present utility model.

[0019] Figure 3 Provided for the embodiments of this utility model Figure 2 A schematic diagram of the cross-sectional structure along the CC direction.

[0020] Figure 4 Provided for embodiments of this utility model Figure 3 A magnified view of a portion of point A in the middle.

[0021] Figure 5 This is a top view of the internal structure of the energy storage box provided in an embodiment of the present utility model.

[0022] Figure 6 Provided for the embodiments of this utility model Figure 5 A top-section view of the structure along the BB direction.

[0023] Figure 7 Provided for the embodiments of this utility model Figure 5 A schematic diagram of the structure in top sectional view along the AA direction.

[0024] Figure Labels

[0025] 100 is the enclosure; 101 is the double door; 102 is the end panel; 103 is the single door; 104 is the top panel; 105 is the bottom panel; 201 is the outer protective layer; 202 is the insulation material; 203 is the flame-retardant material; 204 is the inner lining layer; 205 is the airflow cavity; 206 is the mounting cavity; 301 is the battery compartment; 302 is the electrical compartment; 303 is the liquid cooling compartment; 304 is the fire-fighting compartment; 401 is the air heating device; 501 is the installation channel. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present invention.

[0027] like Figure 1 As shown, this embodiment provides a hot air isolation type energy storage box, including a box body 100, which is composed of a door and a panel. The door includes a double door 101 and a single door 103, which are designed for opening and closing. The panel includes a fixed bottom plate 105, an end plate 102, and a top plate 104. In this embodiment, airflow cavities 205 are provided on the main body of the door and the panel. Multiple sets of air heating devices 401 are provided in the inner cavity of the box body 100. The air heating devices 401 can generate hot airflow. The airflow outlets of the multiple sets of air heating devices 401 are connected to the airflow cavities 205 at corresponding positions. By filling the airflow cavities 205 with hot airflow, a hot air isolation layer is formed on the door and the panel.

[0028] Specifically, in this embodiment, an airflow cavity 205 for hot air circulation is provided on the main body constituting the door and panel (which can also be referred to as the side wall of the box 100). The hot air generated by multiple sets of air heating devices 401 circulates in the airflow cavity 205, thereby blocking external cold air from entering the box 100 through the door and panel. At the same time, by providing airflow cavities 205 on the door and panel respectively, hot air can be generated at the joint gap of the door and panel, thereby blocking cold air from entering the box 100 through the joint gap, thus achieving the effect of thermal insulation of the joint gap. It is understood that the size of the airflow cavity 205 should correspond to the size of the corresponding door and panel, so as to effectively improve the heat preservation effect of the box 100. In addition, it is understood that the airflow speed in the airflow cavity 205 can be dynamically adjusted according to the outdoor environment and the temperature inside the box 100, so as to achieve thermal insulation while using the airflow flowing out of the airflow cavity 205 to reheat the inside of the box 100, thereby achieving efficient utilization of hot air.

[0029] In summary, this solution forms a hot air insulation layer on the wall of the housing 100 through the airflow cavity 205 and the air heating device 401, which can effectively isolate cold air, thereby achieving the purpose of heat preservation of the energy storage box and improving the overall lifespan and safety of the energy storage box in low-temperature environments.

[0030] The main body of the door and panel is a thermal insulation composite structure, which, from the outside to the inside, includes an outer protective layer 201, a thermal insulation and flame-retardant layer, and an inner lining layer 204. An airflow cavity 205 is disposed on the thermal insulation and flame-retardant layer. Figure 2-4 The diagram shown illustrates the structure of the airflow cavity 205 using a double door 101 as an example in this embodiment. It is understood that since both the door and the panel are equipped with airflow cavities 205, those skilled in the art should understand that the arrangement and structure of the airflow cavities 205 on other doors and panels are the same. Figure 4 It can be seen that the airflow cavity 205 is located in the middle of the body and the plate, that is, it is located on the heat insulation and flame retardant layer.

[0031] The airflow cavity 205 can be an S-shaped channel structure set on the heat insulation and flame retardant layer, or it can be an interlayer gap set on the heat insulation and flame retardant layer. In this embodiment, the latter is preferred, that is, the heat insulation and flame retardant layer is set as an interlayer cavity structure. The interlayer cavity penetrates at least one side of the heat insulation and flame retardant layer, thereby forming a dynamic airflow cavity 205. Setting the airflow cavity 205 in the interlayer of the heat insulation and flame retardant layer can reduce the heat loss of the hot airflow and make the heat energy circulation more durable. On the other hand, it can improve the safety of the heating device.

[0032] The thermal insulation and flame retardant layer includes thermal insulation material 202 and flame retardant material 203. The thermal insulation material 202 is disposed on the side near the outer protective layer 201, and the flame retardant material 203 is disposed on the side near the inner lining layer 204. The airflow cavity 205 is disposed on the flame retardant material 203. It can be understood that the main purpose of the airflow cavity 205 is to prevent cold air from entering the box 100, rather than to radiate heat energy into the box 100. Therefore, in this embodiment, the airflow cavity 205 is preferably disposed on the side near the outer protective layer 201.

[0033] Both the outer protective layer 201 and the inner lining layer 204 are steel plates. The outer protective layer 201 and the inner lining layer 204 together form a cavity, and the heat-insulating and flame-retardant layer is placed inside the cavity.

[0034] The air heating device 401 is fixed by bolts. It can be understood that the air heating device 401 can be fixed at any position within the housing 100 to deliver hot airflow to the corresponding airflow cavity 205 of the main body. In this embodiment, a mounting cavity 206 is preferably provided on the main body of the door and panel, and the air heating device 401 is fixed in the mounting cavity 206 to form an integral structure with the main body. This ensures that the opening and closing of the door is not affected by the air heating device 401. In this embodiment, the specific location of the mounting cavity 206 depends on the layout of the door and panel. For the door and end panel 102 (side panel), since they are both vertically fixed to the bottom plate 105, it is preferable to provide the mounting cavity 206 near the bottom. See [reference needed]. Figure 4 Specifically, an opening is made in the inner lining layer 204 and extends through the flame-retardant material 203 to form an embedded groove that communicates with the airflow cavity 205. This embedded groove is the mounting cavity 206, and the air heating device 401 is horizontally fixed in the mounting cavity 206. For the bottom plate 105 and the top plate 104, since they are horizontally arranged, it is preferable to make an opening in the inner lining layer 204 at any position of the bottom plate 105 and the top plate 104 and extend through the flame-retardant material 203 to form a sunken groove that communicates with the airflow cavity 205. The air heating device 401 is vertically installed in the sunken groove.

[0035] In this embodiment, the inner cavity of the housing 100 is divided into a battery compartment 301, an electrical compartment 302, a liquid cooling compartment 303, and a fire-fighting compartment 304. The number of air heating devices 401 installed in each compartment varies depending on their volume; see details below. Figure 5-7 It is understandable that since all compartments share the same floor plate 105 and top plate 104, the number of air heating devices 401 installed in each compartment is mainly determined by the structure of the side panels (door panels and end plates 102), such as... Figure 6 As shown is a top sectional view of the battery compartment 301 provided in this embodiment. Multiple sets of air heating devices 401 are horizontally and equidistantly arranged on both side panels of the battery compartment 301 near the bottom; as Figure 7The figure shows a top sectional view of the liquid cooling chamber 303 and the fire-fighting chamber 304 provided in this embodiment. As can be seen from the figure, the number and location of the air heating devices 401 in each chamber are selected according to actual needs. Compared with the traditional box 100, in order to facilitate the installation of the air heating devices 401, an installation channel can be set between the side wall of the box 100 and the battery rack in this embodiment. On the one hand, this avoids damage to the air heating devices 401, and on the other hand, it is conducive to airflow.

[0036] It is understood that in specific use, the required number or location of air heating devices 401 can be selectively turned on to meet actual needs, that is, the air heating devices 401 in each cabin do not necessarily have to be turned on and off at the same time.

[0037] The air heating device 401 includes a heating element, a heat dissipation element, and a control unit. The heating element generates heat energy, and the heat dissipation element releases the heat energy to the outside to generate a hot airflow. In this embodiment, the control unit is connected to the electrical equipment inside the housing 100. The heating element is preferably a resistance heating element, that is, it uses the thermal effect of resistance to generate heat. The heat dissipation element is preferably a fan. That is, in this embodiment, the air heating device is a fan heater. Specifically, the TX030-CR series fan heater is preferred. This type of heater has good low-temperature resistance and high power, which meets the heating requirements of this embodiment.

[0038] In this embodiment, the number of air heating devices 401 activated and the fan speed can be selectively adjusted according to the outdoor environment or the temperature inside the housing 100. This embodiment uses the example of all air heating devices 401 inside the housing 100 being activated to illustrate the specific operating principle of this hot air isolation type energy storage box:

[0039] When the outdoor ambient temperature is lower than the preset temperature (which can be flexibly adjusted according to actual needs, and is preferably -60℃ to -40℃ in this embodiment), the air heating devices 401 in each compartment of the housing 100 are activated. The heat generated by the air heating devices 401 enters the corresponding airflow cavity 205 and forms a hot air isolation layer in the airflow cavity 205. At the same time, the speed of the fan in the air heating device 401 is adjusted to the maximum. This ensures that the temperature of the hot air in the airflow cavity 205 is within the specified range, thus achieving the purpose of hot air isolation. On the other hand, the circulating hot air is used to heat the inner compartment of the housing 100, improving the utilization efficiency of the hot air and ensuring that the battery cells in the housing 100 are in a suitable temperature environment.

[0040] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various improvements without departing from this utility model, and these improvements should also be considered within the scope of protection of this utility model. These improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of the claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A hot air-insulated energy storage box, comprising a box body, the box body being composed of a door and a panel, characterized in that: Both the door and the panel are provided with airflow cavities, and multiple sets of air heating devices are provided in the inner cavity of the box. These air heating devices can generate hot airflow. The airflow outlets of the multiple sets of air heating devices are connected to the airflow cavities at corresponding positions. By filling the airflow cavities with hot airflow, a hot air isolation layer is formed on the door and the panel.

2. The hot air isolated energy storage box according to claim 1, characterized in that: The main body of the door and panel is a thermal insulation composite structure, which includes an outer protective layer, a thermal insulation and flame retardant layer and an inner lining layer from the outside to the inside. The airflow cavity is arranged on the thermal insulation and flame retardant layer.

3. The hot air isolated energy storage box according to claim 2, characterized in that: The heat-insulating and flame-retardant layer has a sandwich cavity structure, and the sandwich cavity extends through at least one side of the heat-insulating and flame-retardant layer to form the airflow cavity.

4. The hot air isolated energy storage box according to claim 2, characterized in that: The thermal insulation and flame retardant layer comprises thermal insulation material and flame retardant material. The thermal insulation material is disposed on the side close to the outer protective layer, and the flame retardant material is disposed on the side close to the inner lining layer. The airflow cavity is disposed on the flame retardant material.

5. The hot air isolated energy storage box according to claim 2, characterized in that: Both the outer protective layer and the inner lining layer are made of steel plates.

6. The hot air isolated energy storage box according to claim 1, characterized in that: The main body of the door and the panel is provided with an installation cavity that communicates with the airflow cavity, and the air heating device is fixed in the installation cavity and forms an integral part with the main body.

7. The hot air isolated energy storage box according to claim 1, characterized in that: The air heating device includes a heating element, a heat dissipation element, and a control unit. The heating element can generate heat energy, and the heat dissipation element can release the heat energy to the outside to generate a hot airflow.

8. The hot air isolated energy storage box according to claim 6, characterized in that: The air heating device is a fan heater.

9. The hot air isolated energy storage box according to claim 8, characterized in that: The fan heater specifically adopts the TX030-CR series fan heater.

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