Energy storage container and energy storage system

Abstract

The utility model provides an energy storage container and an energy storage system. The energy storage container comprises a container body, a door plate and a heat dissipation unit. The box body is provided with a first opening and is used for accommodating the battery module; the door plate is installed at the first opening and provided with an air inlet and a first air outlet, and the air inlet and the first air outlet both penetrate through the door plate in the thickness direction of the door plate. The heat dissipation unit is installed on the door plate, and the air inlet, the heat dissipation unit and the first air outlet are sequentially arranged in the height direction of the door plate. When the door plate is in a closed state, the door plate covers the first opening, the air inlet and the first air outlet communicate with the interior of the box body, and the heat dissipation unit is located in the box body. According to the embodiment of the invention, the installation mode of the internal unit of the energy storage container can be adjusted, and the energy density of the energy storage container is improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage container and an energy storage system. Background Art

[0002] With the large-scale application of new energy sources such as solar energy and wind energy, electrochemical energy storage has become popular because it is not restricted by geographical terrain and can quickly store and release electrical energy. The construction of electrochemical energy storage power stations usually requires the layout of energy storage devices. Existing energy storage devices usually use containers as carriers for convenient transportation. However, due to the limited internal space of the energy storage container, there is little space available for the installation of battery modules, resulting in a low energy density of the energy storage container. Utility Model Content

[0003] Based on this, the present application provides an energy storage container and an energy storage system, which can adjust the installation method of the internal units of the energy storage container and improve the energy density of the energy storage container.

[0004] In a first aspect, the present application provides an energy storage container, which includes a box body, a door panel, and a heat dissipation unit. The box body is provided with a first opening, and the box body is used to accommodate a battery module. The door panel is installed at the first opening, and the door panel is provided with an air inlet and a first air outlet, and the air inlet and the first air outlet both penetrate the door panel along the thickness direction of the door panel. The heat dissipation unit is installed at the door panel, and the air inlet, the heat dissipation unit, and the first air outlet are sequentially arranged along the height direction of the door panel. When the door panel is in a closed state, the door panel covers the first opening, and the air inlet and the first air outlet are both connected to the interior of the box body, and the heat dissipation unit is located inside the box body.

[0005] In this embodiment, the heat dissipation unit can transfer the cooling medium to the battery module to dissipate heat from the battery module. The heat dissipation unit can also draw air into the receiving chamber from the air inlet, then take away the heat of the cooling medium in the receiving chamber, and finally discharge the gas from the first air outlet, thereby dissipating the heat outside the chassis.

[0006] In addition, since the battery module and the heat dissipation unit in the energy storage container are separated, the heat dissipation unit is directly installed on the door panel, so that the heat dissipation process of the heat dissipation unit can be carried out separately from the heat dissipation process of the battery module. The air cooling process of the heat dissipation unit can be completed in the area close to the door panel to avoid the air cooling process affecting the temperature of the battery module, resulting in different temperatures at different positions of the battery module, causing inaccurate temperature measurement by the sensor. The battery module can ensure that the temperature of the battery pack at different positions is relatively balanced through liquid cooling, making the temperature of the battery module more controllable, thereby improving the temperature control efficiency.

[0007] Wherein, the first air outlet is located above the air inlet.

[0008] In this embodiment, since the first air outlet is located above the air inlet, the air can flow from bottom to top, which conforms to the chimney effect of air flow, thereby increasing the air flow rate and further improving the heat dissipation efficiency of the heat dissipation unit in the accommodation cavity.

[0009] Furthermore, since the present application arranges the heat dissipation unit on the door panel, the space between the door panel and the battery module can be cleverly utilized, thereby improving the space utilization inside the box, so that the battery module has more installation space, thereby improving the power granularity of the energy storage container and making the energy density of the energy storage container greater.

[0010] In a possible implementation, the energy storage container further includes a power distribution unit, which is installed inside the box body. Along the width direction of the box body, the power distribution unit is located on one side of the battery module and is electrically connected to the battery module, wherein the width direction of the box body is perpendicular to the opening direction of the first opening.

[0011] In this embodiment, the power distribution group and the battery module are separated to separate the working area of ​​the power distribution group and the working area of ​​the battery module, thereby reducing the temperature impact of the battery module on the power distribution group and improving the reliability and stability of the power distribution group.

[0012] In a possible embodiment, the box body also includes a partition, which is installed inside the box body. The partition extends along the height direction of the box body, and the partition divides the interior of the box body into a battery compartment and a distribution compartment. Along the width direction of the box body, the battery compartment and the distribution compartment are arranged in sequence, the battery module is installed in the battery compartment, and the distribution unit is installed in the distribution compartment.

[0013] Among them, the box body also includes a second side panel and a third side panel, there is a receiving cavity between the second side panel and the third side panel, the partition is located between the second side panel and the third side panel, there is a battery compartment between the partition and the second side panel, and there is a power distribution compartment between the partition and the third side panel.

[0014] In this embodiment, the power distribution unit and the battery module are isolated by a partition, thereby reducing the electromagnetic interference of the battery module on the power distribution unit. At the same time, the temperature impact of the battery module on the power distribution unit can be reduced, and the heat generated by the battery module during operation can be prevented from increasing the temperature around the power distribution unit, ensuring that the power distribution unit can operate within a safe temperature range. When the battery module in the battery compartment has thermal runaway, the barrier effect of the partition prevents the thermal runaway from spreading to the power distribution compartment, thereby improving the reliability and stability of the power distribution unit.

[0015] The power distribution unit is arranged close to the third side panel, and the power distribution unit can directly lead out the wires from one side of the third side panel, so that the operator can connect the power distribution unit to the external power equipment. Avoid the battery module blocking the outlet position of the power distribution unit, and ensure that the power distribution unit has a larger area for leading out the wires, so as to facilitate the flexible connection between the power distribution unit and the external power equipment. Since the power distribution unit is close to the box panel of the energy storage container, the length of the wires leading out of the power distribution unit does not need to be configured too long. The wires can connect the power distribution unit to the external equipment, so the length of the wires is shorter, thereby reducing the loss of the wires in the power transmission and making the power utilization rate higher.

[0016] In a possible implementation, the power distribution unit includes a fire protection component, a cluster control box and a junction box, which are arranged in sequence along the height direction of the box, and the junction box connects the cluster control box and the battery module.

[0017] In a possible implementation, the heat dissipation unit includes a liquid cooling component, a fan and a pipeline. The liquid cooling component, the fan and the air inlet are arranged in sequence along the height direction of the door panel, and the pipeline connects the liquid cooling component and the battery module.

[0018] In this embodiment, when the fan is working, air can be sucked in from the air inlet of the box to form an airflow blowing toward the liquid cooling component, so that the heat of the liquid cooling component can be transferred to the air more quickly, thereby increasing the heat dissipation rate of the cooling medium in the liquid cooling component, and increasing the exchange rate between the cooling medium and the battery module, so that the heat dissipation rate of the battery module is improved.

[0019] In a possible implementation manner, the width of the box body ranges from 1.2 m to 1.5 m, the length of the box body ranges from 2.4 m to 2.8 m, and the height of the box body ranges from 2.5 m to 3 m.

[0020] In this embodiment, the volume of the box can be adaptively set according to actual use requirements. When the use scenario requires the energy storage container to have a larger power granularity, the width, length and height of the box can be increased to provide a larger installation space for the battery module to increase the number or size of battery packs in the battery module. When the use scenario requires the energy storage container to have a smaller power granularity, the width, length and height of the box can be reduced to reduce the volume of the box and reduce the number or size of battery packs in the battery module.

[0021] In a possible implementation manner, the width of the liquid cooling component ranges from 0.2 m to 0.3 m, and the width direction of the liquid cooling component is the thickness direction of the door panel.

[0022] In this embodiment, since the battery module needs to be replaced or repaired in time when a problem occurs, the battery module cannot be blocked by other units of the energy storage container, resulting in the inability to effectively utilize the space between the door panel in the receiving cavity and the battery module.

[0023] The present application connects the heat dissipation unit to the door panel so that when the door panel is opened, the battery module can be exposed, thereby facilitating maintenance operations by the staff. When the door panel is closed, the heat dissipation unit can be located between the door panel and the battery module, thereby effectively utilizing the space between the door panel and the battery module, so that most of the space inside the receiving cavity can be used for installing the battery module. The larger the volume of the battery module, the larger the granularity of the power of its energy storage container, thereby achieving the effect of improving the energy density of the energy storage container.

[0024] In a possible implementation, the energy storage container further includes a first side panel, the box body is provided with a second opening, the second opening and the first opening are arranged opposite to each other along the length direction of the box body, and when the first side panel is in a closed state, the first side panel and the door panel are arranged opposite to each other in the length direction of the box body, and the first side panel covers the second opening.

[0025] In this embodiment, both sides of the energy storage container along the length direction can be opened. When the door panel and the first side panel are opened, the opposite sides of the battery module can be exposed, thereby facilitating operators to adjust or repair the battery module.

[0026] In a possible implementation, the battery module includes a plurality of batteries, and the plurality of batteries are stacked in sequence along a height direction of the box.

[0027] In a possible implementation manner, a second air outlet is provided on the top of the box body, and the second air outlet is communicated with the interior of the box body.

[0028] In actual use, even if one of the first air outlet and the second air outlet of the energy storage container is blocked, the box still has another air outlet for air to flow in. The air outlet of the box will not be completely closed, so as to ensure that the heat dissipation unit inside the box can dissipate heat in time through air cooling, and avoid the heat dissipation unit being unable to dissipate the temperature of the cooling medium, resulting in a large amount of heat accumulation in the battery module, which makes it unable to work normally or explode.

[0029] In a second aspect, the present application provides an energy storage system, the energy storage system comprising at least two energy storage containers as described above, wherein along the width direction of the energy storage containers, at least two energy storage containers are arranged side by side and at intervals.

[0030] In this embodiment, since the energy storage containers can take in air from the air inlets of the door panels, arranging the energy storage containers side by side in the width direction will not affect the air intake process of the energy storage containers, and the two energy storage containers can be placed as close to each other as possible, thereby reducing the distance between the two energy storage containers, thereby reducing the floor space of the energy storage system, and improving the granularity of the electricity consumption of the energy storage system per unit floor space.

[0031] In a possible implementation manner, the distance between two adjacent energy storage containers is less than or equal to 1.5 m.

[0032] In a third aspect, the present application provides an energy storage system, the energy storage system comprising at least two energy storage containers as described above, wherein along the length direction of the energy storage containers, at least two energy storage containers are arranged side by side and at intervals.

[0033] In this embodiment, the energy storage system is suitable for an installation site with a small width and a large length. Two energy storage containers can be arranged side by side along the length direction of the installation site.

[0034] In a possible implementation manner, the distance between two adjacent energy storage containers is less than or equal to 0.6 m. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.

[0036] Figure 1 is a structural schematic diagram of an energy storage container provided in an embodiment of the present application, wherein a door panel of the energy storage container is in a closed state;

[0037] Figure 2 yes Figure 1 The schematic diagram of the structure of the energy storage container shown, wherein the door panel of the energy storage container is in an open state;

[0038] Figure 3 yes Figure 2 A schematic diagram of the structure of the frame shown;

[0039] Figure 4 yes Figure 2 The schematic diagram of a part of the structure of the energy storage container from a top view is shown, wherein the door panel and the first side panel are in an open state;

[0040] Figure 5 yes Figure 4 The schematic diagram of a part of the structure of the energy storage container from a top view is shown, wherein the door panel and the first side panel are in a closed state;

[0041] Figure 6 It is composed of two Figure 1 A structural schematic diagram of an energy storage system composed of energy storage containers shown;

[0042] Figure 7 It is composed of two Figure 1 Another structural schematic diagram of an energy storage system composed of energy storage containers shown;

[0043] Figure 8 It consists of four Figure 1 A structural schematic diagram of an energy storage system composed of energy storage containers is shown. DETAILED DESCRIPTION

[0044] The specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can also be implemented in other ways different from those described herein, and therefore, the present application is not limited to the following embodiments.

[0045] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0046] Multiple: refers to two or more than two.

[0047] Connection: should be understood in a broad sense. For example, A and B are connected, which can be either direct or indirect through an intermediary.

[0048] The specific implementation of the present application will be clearly described below in conjunction with the accompanying drawings.

[0049] At present, energy storage systems can use the conversion between electrical energy and chemical energy to achieve the storage and output of electrical energy. Energy storage systems are mainly divided into two application scenarios: industrial and commercial energy storage scenarios and power station energy storage scenarios. Industrial and commercial energy storage scenarios usually use energy storage cabinets as carriers, and the power granularity is generally around 200KWh, which is commonly used in large and small factories, commercial office buildings, stations and other scenarios. Power station energy storage scenarios usually use energy storage containers as carriers, and the power granularity is generally at the megawatt-hour level, which is commonly used in large photovoltaic ground power stations, etc.

[0050] The energy storage system provided in the embodiment of the present application is mainly used in power station energy storage scenarios. The energy storage system may include multiple energy storage containers. Multiple energy storage containers are arranged at intervals. Multiple energy storage containers can be connected in series or in parallel, so as to be electrically connected to electrical equipment outside the energy storage system.

[0051] Please refer to Figure 1 and Figure 2 , Figure 1is a schematic diagram of the structure of an energy storage container 10 provided in an embodiment of the present application, wherein a door panel of the energy storage container 10 is in a closed state. Figure 2 yes Figure 1 The schematic structural diagram of the energy storage container 10 is shown, wherein the door panel of the energy storage container 10 is in an open state.

[0052] In the figure, the X direction is the width direction of the energy storage container 10. The width range of the energy storage container 10 is between 1.2m-1.5m (including the endpoint values ​​1.2m and 1.5m). In the figure, the Y direction is the length direction of the energy storage container 10. The length range of the energy storage container 10 is between 2.4m-2.8m (including the endpoint values ​​2.4m and 2.8m). In the figure, the Z direction is the height direction of the energy storage container 10. The height range of the energy storage container 10 is between 2.5m-3m (including the endpoint values ​​2.5m and 3m).

[0053] The energy storage container 10 includes a box body 11, a door panel 16, a battery module 12, a heat dissipation unit 13 and a power distribution unit 14. The box body 11 is provided with a receiving cavity 151, and the receiving cavity 151 is provided with an opening in the length direction of the box body 11. When the door panel 16 is in a closed state, the door panel 16 covers the opening of the receiving cavity 151, and the battery module 12, the heat dissipation unit 13 and the power distribution unit 14 are all installed in the receiving cavity 151. When the door panel 16 is in an open state, the door panel 16 exposes the opening of the receiving cavity 151, and the battery module 12 and the power distribution unit 14 are all installed in the receiving cavity 151, and at least part of the heat dissipation unit 13 is located outside the receiving cavity 151.

[0054] Specifically, the receiving chamber 151 includes a battery compartment 152 and a power distribution compartment 153. The battery compartment 152 and the power distribution compartment 153 are arranged in sequence along the X direction. When the door panel 16 is in a closed state, the battery module 12 and the heat dissipation unit 13 are installed in the battery compartment 152. The power distribution unit 14 is installed in the power distribution compartment 153. Among them, the battery module 12 is used to store electricity. The heat dissipation unit 13 is used to dissipate heat for the battery module 12. The power distribution unit 14 can control or assist the battery module 12 to work.

[0055] The box body 11 includes a frame 154 and a box plate 155. The box plate 155 can be fixedly connected to the frame 154. Figure 3 , Figure 3 yes Figure 2 The structural diagram of the frame 154 is shown. The frame 154 includes a bottom beam 156, a top beam 157, a vertical beam 158 and a support beam 159. The top beam 157 and the bottom beam 156 are arranged opposite to each other in the height direction of the frame 154. The vertical beam 158 and the support beam 159 are connected between the top beam 157 and the bottom beam 156.

[0056] The bottom beam 156 includes two first beams 1561 and two second beams 1562. The two first beams 1561 extend along the length direction of the box body 11 and are spaced opposite to each other along the width direction of the box body 11. The two second beams 1562 extend along the width direction of the box body 11 and are spaced opposite to each other along the length direction of the box body 11. One first beam 1561, one second beam 1562, another first beam 1561 and another second beam 1562 are connected end to end in sequence.

[0057] The top beam 157 includes two third cross beams 1571, two fourth cross beams 1572, a fifth cross beam 1573 and a sixth cross beam 1574. The two third cross beams 1571 extend along the length direction of the box body 11 and are spaced opposite to each other along the width direction of the box body 11. The two fourth cross beams 1572 extend along the width direction of the box body 11 and are spaced opposite to each other along the length direction of the box body 11. One third cross beam 1571, one fourth cross beam 1572, another third cross beam 1571 and another fourth cross beam 1572 are connected end to end in sequence. In the height direction of the box body 11, the third cross beam 1571 of the top beam 157 is arranged opposite to the first cross beam 1561 of the bottom beam 156, and the fourth cross beam 1572 of the top beam 157 is arranged opposite to the second cross beam 1562 of the bottom beam 156.

[0058] The fifth cross beam 1573 is located between the two third cross beams 1571. The fifth cross beam 1573 is spaced apart from the third cross beam 1571. The fifth cross beam 1573 extends along the length direction of the box body 11. Both ends of the fifth cross beam 1573 are connected to the two fourth cross beams 1572 respectively.

[0059] The sixth cross beam 1574 is located between the two fourth cross beams 1572. The sixth cross beam 1574 is spaced apart from the fourth cross beam 1572. The sixth cross beam 1574 intersects with the fifth cross beam 1573. The sixth cross beam 1574 extends along the width direction of the box body 11. Both ends of the sixth cross beam 1574 are connected to the two third cross beams 1571 respectively.

[0060] There are four vertical beams 158. The four vertical beams 158 are connected between the top beam 157 and the bottom beam 156. The four vertical beams 158 extend along the height direction of the box body 11. One end of each vertical beam 158 is connected to the intersection of the first cross beam 1561 and the second cross beam 1562, and the other end is connected to the intersection of the third cross beam 1571 and the fourth cross beam 1572.

[0061] The frame 154 includes a first side portion 1541 and a second side portion 1542. The first side portion 1541 and the second side portion 1542 are opposite to each other in the length direction of the frame 154. The first side portion 1541 is provided with two vertical beams 158, a second horizontal beam 1562 and a fourth horizontal beam 1572. The second side portion 1542 is provided with another two vertical beams 158, another second horizontal beam 1562 and another fourth horizontal beam 1572.

[0062] The support beam 159 is located at the first side portion 1541. The support beam 159 extends along the height direction of the box body 11. The support beam 159 is located between the two vertical beams 158. One end of the support beam 159 is connected to the second cross beam 1562, and the other end is connected to the fourth cross beam 1572.

[0063] Please refer to Figure 1 , Figure 2 and Figure 4 , Figure 4 yes Figure 2 The schematic diagram of the partial structure of the energy storage container 10 in a top view is shown, wherein the door panel 16 and the first side panel 1553 are in an open state. The box panel 155 includes a first side panel 1553, a second side panel 1551, a third side panel 1552, a top panel 1554, a bottom panel 1555 and a partition panel 1556. The first side panel 1553, the second side panel 1551, the third side panel 1552, the top panel 1554, the bottom panel 1555 and the partition panel 1556 are all connected to the frame 154.

[0064] Please refer to Figure 1 and Figure 3 The periphery of the second side plate 1551 is fixedly connected to two vertical beams 158 , a first cross beam 1561 and a third cross beam 1571 .

[0065] The periphery of the third side plate 1552 is fixedly connected to the other two vertical beams 158, another first cross beam 1561 and another third cross beam 1571. The third side plate 1552 and the second side plate 1551 are spaced apart from each other in the width direction of the box body 11.

[0066] The receiving cavity 151 is located between the third side plate 1552 and the second side plate 1551. Figure 4 The receiving cavity 151 includes a first opening 1581 and a second opening 1582 that are oppositely arranged along the length direction of the energy storage container 10. The first opening 1581 and the second opening 1582 are arranged opposite to each other in the length direction of the box body 11. The opening direction of the first opening 1581 is toward one side in the length direction of the box body 11. The opening direction of the second opening 1582 is toward the other side in the length direction of the box body 11. The first opening 1581 is located at the first side portion 1541. The second opening 1582 is located at the second side portion 1542.

[0067] Please refer to Figure 2 and Figure 3 , the partition 1556 is located in the receiving cavity 151. The periphery of the partition 1556 can be connected to a fifth crossbeam 1573 and a support beam 159 respectively. The partition 1556 can be spaced opposite to the second side plate 1551 in the width direction of the box body 11, and the battery compartment 152 is between the partition 1556 and the second side plate 1551. The partition 1556 and the third side plate 1552 are spaced opposite to each other in the width direction of the box body 11. The distribution compartment 153 is between the partition 1556 and the third side plate 1552. The material of the partition 1556 can be a fireproof plate, such as a steel plate.

[0068] Please refer to Figure 3 and Figure 4 , the first side plate 1553 is located at the second side portion 1542 of the frame 154. The first side plate 1553 can be connected to a second cross beam 1562, a fourth cross beam 1572 and two vertical beams 158 of the second side portion 1542. The first side plate 1553 can cover the openings (second openings 1582) of the battery compartment 152 and the power distribution compartment 153 in the length direction of the box body 11.

[0069] In some possible embodiments, the first side plate 1553 may be rotatably connected to a vertical beam 158. The first side plate 1553 may include a closed state and an open state. When the first side plate 1553 is in the closed state, the first side plate 1553 covers the second opening 1582 of the accommodating cavity 151, that is, the first side plate 1553 may cover the openings of the battery compartment 152 and the power distribution compartment 153 at the second side portion 1542. When the first side plate 1553 is in the open state, the first side plate 1553 exposes the second opening 1582, that is, the first side plate 1553 exposes the openings of the battery compartment 152 and the power distribution compartment 153 at the second side portion 1542.

[0070] In this embodiment, the first side panel 1553 can open the openings of the battery compartment 152 and the power distribution compartment 153, thereby providing an operating space for the operator to install or repair the battery module 12 in the battery compartment 152 and the power distribution unit 14 in the power distribution compartment 153.

[0071] Please refer to Figure 1 and Figure 3 The periphery of the top plate 1554 is fixedly connected to the two third cross beams 1571 and the two fourth cross beams 1572 of the top beam 157. The middle area of ​​the top plate 1554 can be connected to the fifth cross beam 1573 and the sixth cross beam 1574. The top plate 1554 covers the openings at the top of the battery compartment 152 and the power distribution compartment 153.

[0072] The top plate 1554 may be provided with a second air outlet 1557. The second air outlet 1557 penetrates the top plate 1554 along the thickness direction of the top plate 1554. The orthographic projection of the second air outlet 1557 along the height direction of the box body 11 may be located between the second side plate 1551 and the partition plate 1556. The second air outlet 1557 communicates with the battery compartment 152 and the outside of the box body 11.

[0073] In this embodiment, the third cross beam 1571, the fourth cross beam 1572, the fifth cross beam 1573 and the sixth cross beam 1574 jointly support the top plate 1554 to prevent cracks and collapse on the surface of the top plate 1554, thereby making the top plate 1554 more stable.

[0074] The bottom plate 1555 and the top plate 1554 are arranged opposite to each other along the height direction of the box body 11. The periphery of the bottom plate 1555 is fixedly connected to the two first cross beams 1561 and the two second cross beams 1562 of the bottom beam 156. The bottom plate 1555 covers the openings at the bottom of the battery compartment 152 and the power distribution compartment 153.

[0075] Please refer to Figure 1 and Figure 2 , the door panel 16 is connected to the first side portion 1541 of the frame 154. The door panel 16 and the first side panel 1553 are arranged opposite to each other along the length direction of the box body 11. The door panel 16 can be rotatably connected to a vertical beam 158 of the first side portion 1541. The door panel 16 includes an open state and a closed state. When the door panel 16 is in the closed state, the door panel 16 can be connected to the two vertical beams 158 of the first side portion 1541, the second cross beam 1562 and the fourth cross beam 1572, and the door panel 16 covers the first opening 1581 of the accommodating cavity 151, that is, the door panel 16 can cover the openings of the battery compartment 152 and the power distribution compartment 153 at the first side portion 1541. When the door panel 16 is in the open state, the door panel 16 exposes the openings of the battery compartment 152 and the power distribution compartment 153 at the first side portion 1541.

[0076] The door panel 16 is provided with an air inlet 161 and a first air outlet 162. The air inlet 161 penetrates the door panel 16 along the thickness direction of the door panel 16. The air inlet 161 is located at the bottom area of ​​the door panel 16. When the door panel 16 is in a closed state, the air inlet 161 communicates with the battery compartment 152 and the outside of the box body 11.

[0077] Exemplarily, the air inlet 161 may include a plurality of ventilation holes arranged in an array (not shown). Each ventilation hole penetrates the door panel 16 along the thickness direction of the door panel 16. Two adjacent ventilation holes are arranged at intervals. Among them, the position where the door panel 16 is provided with the air inlet 161 may be a grid plate with a plurality of ventilation holes. Alternatively, the air inlet 161 may also be a single through hole with a larger aperture to reduce obstruction to airflow. In addition, a reminder sign may be provided on the door panel 16 to remind the operator to pay attention to the position of the main ventilation hole to prevent the operator from accidentally touching the battery module 12 in the battery compartment 152 from the position of the air inlet 161.

[0078] In this embodiment, since the aperture of the ventilation holes is small, larger objects can be blocked outside the box body 11 of the energy storage container 10, thereby preventing foreign objects from passing through the air inlet 161 and impacting the battery module 12 inside the box body 11, thereby ensuring that the battery module 12 is minimized from impact by foreign objects.

[0079] The first air outlet 162 is located at the top area of ​​the door panel 16. The first air outlet 162 penetrates the door panel 16 along the thickness direction of the door panel 16. The first air outlet 162 and the air inlet 161 are spaced apart along the height direction of the door panel 16. When the door panel 16 is in a closed state, the first air outlet 162 communicates with the battery compartment 152 and the outside of the box body 11.

[0080] See also Figure 4 In this embodiment, the door panel 16 and the first side panel 1553 can be opened simultaneously to expose the first opening 1581 and the second opening 1582 so that the operator can adjust or replace the battery module 12, the power distribution unit 14 and the heat dissipation unit 13 inside the box body 11.

[0081] Please refer to Figure 2 , the battery module 12 is installed in the battery compartment 152 of the box body 11. The battery module 12 includes a plurality of battery packs 121. The length of the battery pack 121 can be between 1.7m and 2.2m (including the endpoint values ​​1.7m and 2.2m), and the thickness of the battery pack 121 can be 275mm. The battery cells in the battery pack 121 can be blade cells. The battery pack 121 can have a thermal and electrical isolation function, that is, the liquid cooling and heat dissipation components in the battery pack 121 are isolated from the electrical connection components.

[0082] The number of battery packs 121 may be eight, and the eight battery packs 121 are stacked in the thickness direction. The battery packs 121 are inserted into the battery compartment 152 from the first opening 1581 along the length direction thereof. Exemplarily, the number of battery packs 121 may also be nine, and the number of battery packs 121 may be adjusted according to the requirements for power granularity in actual use.

[0083] The bottom battery pack 121 is spaced apart from the bottom plate 1555. The spacing between the bottom battery pack 121 and the bottom plate 1555 is between 30mm and 100mm (including endpoint values ​​of 30mm and 100mm). The spacing between the bottom battery pack 121 and the bottom plate 1555 can provide an installation position for the wiring described below. The top battery pack 121 is spaced apart from the top plate 1554. The distance between the top battery pack 121 and the top plate 1554 can be between 20mm and 100mm (including endpoint values ​​of 20mm and 100mm). The distance between the top battery pack 121 and the top plate 1554 can be used to install a temperature sensor or a carbon monoxide sensor, etc., to monitor the internal environment of the battery compartment 152.

[0084] Please refer to Figure 4 and Figure 5 , Figure 5 yes Figure 4 The schematic diagram of the partial structure of the energy storage container 10 in a top view is shown, wherein the door panel 16 and the first side panel 1553 are in a closed state. When the door panel 16 is in a closed state, the heat dissipation unit 13 is located in the battery compartment 152 of the box body 11.

[0085] See also Figure 2 , the heat dissipation unit 13 includes a liquid cooling component 131, a fan 132 and a pipe 133. The liquid cooling component 131 is installed on the side of the door panel 16 facing the box body 11. The first air outlet 162, the liquid cooling component 131, the fan 132, and the air inlet 161 are arranged in sequence along the height direction of the door panel. The width range of the liquid cooling component 131 is between 0.2m-0.3m, and the width direction of the liquid cooling component 131 is the thickness direction of the door panel 16. The liquid cooling component 131 is connected to the battery module 12 through the pipe 133. The liquid cooling component 131 may include a power device (not shown) and a heat exchanger (not shown), etc. The power device can provide power for the circulation of the cooling medium. The heat exchanger can cool the passing cooling medium.

[0086] In this embodiment, the liquid cooling assembly 131 can transfer the cooling medium from the pipe 133 to the battery pack 121. After the cooling medium absorbs the heat in the battery pack 121, the cooling medium can flow from the battery pack 121 to the heat exchanger of the liquid cooling assembly 131. The cooling medium in the heat exchanger can exchange heat with the outside air through the surface of the heat exchanger, thereby cooling the cooling medium.

[0087] The fan 132 is located on the side of the liquid cooling assembly 131 facing the air inlet 161. The fan 132 is located between the air inlet 161 and the air outlet. The air outlet side of the fan 132 faces the liquid cooling assembly. When the fan 132 is working, air can be sucked into the box body 11 from the air inlet 161, and the air passes through the liquid cooling assembly 131, and then flows out from the first air outlet 162 and / or the second air outlet 1557.

[0088] In this embodiment, when the fan 132 is working, the heat can be taken out of the box 11. The first air outlet 162 and the second air outlet 1557 can discharge air at the same time, thereby preventing the heat of the heat exchanger of the liquid cooling component 131 from accumulating in the box 11, so that the heat can be transferred to the air more quickly, thereby improving the heat dissipation speed of the heat exchanger of the liquid cooling component 131 to the cooling medium.

[0089] Furthermore, the door panel 16 and one side of the top panel 1554 of the box body 11 are both provided with air outlets. In actual use, even if one of the air outlets of the energy storage container 10 is blocked, the energy storage container 10 still has another air outlet for air discharge. The air outlet of the box body 11 will not be completely closed, thereby ensuring that the heat exchanger inside the box body 11 can dissipate heat in time through air cooling. This prevents the heat exchanger from being unable to dissipate the temperature of the cooling medium, resulting in a large amount of heat accumulation in the battery module 12, which makes it unable to work normally or explode.

[0090] In the embodiment of the present application, the air inlet 161 is located at the bottom of the box 11, and the air outlet is located at the top of the box 11, so that the air can flow from bottom to top, which conforms to the chimney effect of air flow, thereby increasing the air flow rate.

[0091] By setting the heat dissipation unit 13 on the door panel 16, the space between the door panel 16 and the battery module 12 can be cleverly utilized, thereby improving the space utilization rate inside the box body 11, so that the battery module 12 has more installation space, thereby improving the power granularity of the energy storage container 10 and making the energy density of the energy storage container 10 higher.

[0092] Please refer to Figure 2 The power distribution unit 14 is installed in the power distribution compartment 153. The power distribution unit 14 is located between the third side plate 1552 and the partition 1556. The power distribution unit 14 includes a fire protection component 141, a cluster control box 142 and a junction box 143. Along the height direction of the box body 11, the junction box 143, the cluster control box 142 and the fire protection component 141 are arranged in sequence from bottom to top.

[0093] One end of the junction box 143 is connected to the cluster control box 142. The junction box 143 can pass through the partition 1556 and extend in the gap between the battery pack 121 at the bottom of the battery module 12 and the bottom plate 1555. The other end of the junction box 143 is connected to the battery module 12. The junction box 143 can conduct the cluster control box 142 and the battery module 12.

[0094] The firefighting assembly 141 is located between the cluster control box 142 and the top plate 1554. The firefighting assembly 141 may include a variety of sensors and other equipment. Exemplarily, the firefighting assembly 141 may include a smoke sensor, a temperature sensor, a humidity sensor and / or an emergency light, etc. These devices can monitor the environmental changes in the energy storage container 10 in real time, and once an abnormal situation such as smoke, high temperature or fire source is found, the alarm and fire extinguishing procedures will be immediately initiated.

[0095] In some other embodiments, the power distribution unit 14 may also be provided with a power conversion system (PCS), wherein the power conversion system (not shown) may be provided between the cluster control box 142 and the fire protection component 141 .

[0096] In this embodiment, the PCS can control the charging and discharging process of the battery module 12 and perform AC to DC conversion. In the absence of a power grid, the PCS can directly supply power to the AC load.

[0097] In this embodiment, the power distribution set 14 is isolated from the battery module 12 by the partition 1556, thereby reducing the electromagnetic interference of the battery module 12 on the power distribution set 14. At the same time, the temperature effect of the battery module 12 on the power distribution set 14 can also be reduced, and the heat generated by the battery module 12 during operation can be prevented from increasing the temperature around the power distribution set 14, ensuring that the power distribution set 14 can operate within a safe temperature range, and improving the reliability and stability of the power distribution set 14.

[0098] In addition, the power distribution group 14 is arranged close to the third side plate 1552, and the power distribution group 14 can directly lead out the wires from one side of the third side plate 1552, so that the operator can electrically connect the power distribution group 14 to the external power equipment. Avoid the battery module 12 blocking the outlet position of the power distribution group 14, and ensure that the power distribution group 14 has a larger area for leading out the wires, so as to facilitate the flexible connection between the power distribution group 14 and the external power equipment. Since the power distribution group 14 is close to the box plate 155 of the energy storage container 10, the length of the wires leading out of the power distribution group 14 does not need to be configured too long. The wires can connect the power distribution group 14 to the external equipment. The length of the wires is short, thereby reducing the loss of the wires in the transmission of electricity, so that the utilization rate of electricity is higher.

[0099] Furthermore, the present application separates the power distribution unit 14 from the battery module 12, so that the battery module 12 has an independent battery compartment 152. The battery packs 121 can be regularly arranged in the battery compartment 152 without being restricted by the equipment of the power distribution unit 14, thereby improving the space utilization of the battery compartment 152.

[0100] It should be noted that the energy storage container 10 in the diagram of the present application is only for illustration, and the structure of the energy storage container 10 may also be mirror-symmetrical to the energy storage container 10 in the diagram.

[0101] See also Figure 6 , Figure 6 It is composed of two Figure 1 The energy storage container 10 shown is a schematic diagram of a structure of an energy storage system 100. In actual use, the energy storage containers 10 provided in the embodiment of the present application can be combined to form an energy storage system 100.

[0102] In a possible embodiment, two energy storage containers 10 can be placed side by side in a "back-to-back" manner. That is, the two energy storage containers 10 are arranged side by side along the length direction, and the first side panels 1553 of the two energy storage containers 10 can be arranged opposite to each other. The distance D1 between the two energy storage containers 10 can be less than or equal to 0.6 m.

[0103] In this embodiment, the energy storage system 100 is suitable for an installation site with a small width and a large length. Two energy storage containers 10 can be arranged in sequence along the length direction of the installation site. Since the energy storage container 10 can discharge air from the first air outlet 162 of the door panel 16 and the second air outlet 1557 of the top plate 1554, the power distribution unit 14 can lead out the wires from the third side panel 1552. Therefore, the blocking of the first side panel 1553 will not affect the normal operation of the heat dissipation unit 13 and the power distribution unit 14. The first side panels 1553 of the two energy storage containers 10 can be as close to each other as possible, thereby reducing the distance between the two energy storage containers 10, thereby reducing the floor space of the energy storage system 100, improving the utilization rate of the site of the energy storage system 100, and improving the granularity of the electricity consumption of the energy storage system 100 per unit area.

[0104] In addition, the first side portions 1541 of the two energy storage containers 10 with the door panels 16 are facing away from each other, so that the two energy storage containers 10 are arranged side by side. The heat dissipation assembly, the battery module 12 and the power distribution unit 14 can be installed in the energy storage container 10 from one side of the door panel 16 of the energy storage container 10 to achieve the one-way deployment and one-sided door opening of the energy storage container 10. When the internal components of the energy storage container 10 need to be repaired or replaced, the operator can open the door panel 16 for operation, and the operation space is not limited by the site of the container.

[0105] For another possible embodiment, see Figure 7 , Figure 7 It is composed of two Figure 1 Another structural schematic diagram of an energy storage system 100 composed of energy storage containers 10 is shown. Two energy storage containers 10 can be placed side by side in a "shoulder-to-shoulder" manner. That is, the two energy storage containers 10 are arranged side by side in the width direction, and the second side plate 1551 of one energy storage container 10 and the third side plate 1552 of the other energy storage container 10 are spaced and opposite to each other. The distance D2 between the two energy storage containers 10 can be less than 1.5m.

[0106] In this embodiment, since the air intake and air outlet processes of the heat dissipation unit 13 do not pass through the second side plate 1551 and the third side plate 1552, the second side plate 1551 and the third side plate 1552 are arranged as close as possible, which will not affect the heat dissipation process of the energy storage container 10, reduce the distance between the two energy storage containers 10, and further reduce the floor space of the energy storage system 100, improve the site utilization rate of the energy storage system 100, and improve the energy density of the energy storage system 100 per unit floor space.

[0107] In some other embodiments, see Figure 8 , Figure 8 It consists of four Figure 1 A structural schematic diagram of an energy storage system 100 composed of energy storage containers 10 shown. The energy storage system 100 may also include four energy storage containers 10. The four energy storage containers 10 may be arranged in a rectangular array. The arrangement of the four energy storage containers 10 may combine the two embodiments of the energy storage system 100 described above. Along the width direction of the energy storage container 10, the second side plate 1551 of one energy storage container 10 is spaced apart from the third side plate 1552 of another energy storage container 10. Along the length direction of the energy storage container 10, the first side plates 1553 of the two energy storage containers 10 are spaced apart from each other.

[0108] Alternatively, in some other embodiments, the energy storage system 100 may further include any number of energy storage containers 10. Multiple energy storage containers 10 may be arranged in any one or any of the arrangements described above. Alternatively, the energy storage system 100 may further include two mirror-symmetrical energy storage containers 10, and the two energy storage containers 10 may be combined in the "shoulder-to-shoulder" manner described above, or the two energy storage containers 10 may be combined in the "back-to-back" manner described above.

[0109] The above are exemplary embodiments of the present application. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made thereto without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. An energy storage container, characterized in that: The energy storage container includes a box body, a door panel and a heat dissipation unit; The box body is provided with a first opening, and the box body is used to accommodate the battery module; The door panel is installed on the box body, and the door panel is provided with an air inlet and a first air outlet, and the air inlet and the first air outlet both penetrate the door panel along the thickness direction of the door panel; The heat dissipation unit is installed on the door panel, and the air inlet, the heat dissipation unit and the first air outlet are arranged in sequence along the height direction of the door panel; When the door panel is in a closed state, the door panel covers the first opening, the air inlet and the first air outlet are both connected to the interior of the box, and the heat dissipation unit is located inside the box.

2. The energy storage container according to claim 1, characterized in that: The energy storage container also includes a power distribution unit, which is installed inside the box body. Along the width direction of the box body, the power distribution unit is located on one side of the battery module and is electrically connected to the battery module, wherein the width direction of the box body is perpendicular to the opening direction of the first opening.

3. The energy storage container according to claim 2, characterized in that: The box body also includes a partition, which is installed inside the box body and extends along the height direction of the box body. The partition divides the interior of the box body into a battery compartment and a power distribution compartment. Along the width direction of the box body, the battery compartment and the power distribution compartment are arranged in sequence, the battery module is installed in the battery compartment, and the power distribution unit is installed in the power distribution compartment.

4. The energy storage container according to claim 3, characterized in that: The power distribution unit includes a fire protection component, a cluster control box and a junction box. The fire protection component, the cluster control box and the junction box are arranged in sequence along the height direction of the box body. The junction box connects the cluster control box and the battery module.

5. The energy storage container according to any one of claims 1 to 4, characterized in that: The heat dissipation unit includes a liquid cooling component, a fan and a pipeline. The liquid cooling component, the fan and the air inlet are arranged in sequence along the height direction of the door panel. The pipeline connects the liquid cooling component and the battery module.

6. The energy storage container according to any one of claims 1 to 4, characterized in that: The width of the box body ranges from 1.2m to 1.5m, the length of the box body ranges from 2.4m to 2.8m, and the height of the box body ranges from 2.5m to 3m.

7. The energy storage container according to claim 5, characterized in that: The width of the liquid cooling component ranges from 0.2m to 0.3m. The width direction of the liquid cooling component is the thickness direction of the door panel.

8. The energy storage container according to any one of claims 1 to 4, characterized in that: The energy storage container also includes a first side panel, the box body is provided with a second opening, the second opening and the first opening are arranged opposite to each other along the length direction of the box body, and when the first side panel is in a closed state, the first side panel and the door panel are arranged opposite to each other in the length direction of the box body, and the first side panel covers the second opening.

9. The energy storage container according to claim 2, characterized in that: A second air outlet is provided on the top surface of the box body, and the second air outlet is communicated with the interior of the box body.

10. An energy storage system, characterized in that: The energy storage system comprises at least two energy storage containers according to any one of claims 1 to 9, and along the width direction of the energy storage containers, at least two of the energy storage containers are arranged side by side and at intervals.

11. The energy storage system according to claim 10, characterized in that: The distance between two adjacent energy storage containers is less than or equal to 1.5 m.

12. An energy storage system, characterized in that: The energy storage system comprises at least two energy storage containers according to any one of claims 1 to 9, and along the length direction of the energy storage containers, at least two of the energy storage containers are arranged side by side and at intervals.

13. The energy storage system according to claim 12, characterized in that: The distance between two adjacent energy storage containers is less than or equal to 0.6 m.

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