Energy storage container and energy storage system

Abstract

The utility model provides an energy storage container and an energy storage system, and the energy storage container comprises a box body which is provided with a first accommodation cavity and a second accommodation cavity; the plurality of battery packs are arranged in the first accommodating cavity at intervals along the first direction; the cooling assembly comprises a plurality of liquid cooling pieces arranged at intervals in the first direction and a plurality of liquid cooling pipelines, the liquid cooling pieces are arranged in the second containing cavity, the liquid cooling pieces and the liquid cooling pipelines are arranged in one-to-one correspondence with the battery packs, and the liquid cooling pieces are used for driving cooling liquid to flow in the corresponding liquid cooling pipelines so as to cool the corresponding battery packs. By applying the technical scheme of the utility model, the technical problem of low heat dissipation efficiency in related technologies can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage containers, and particularly relates to an energy storage container and an energy storage system. Background Art

[0002] An energy storage container integrates battery packs in a container and is applied to systems such as new energy, distributed power generation, and power grid peak shaving and valley filling, realizing the rapid integration and rapid commissioning of energy storage devices. With the development of energy storage technology, the number of battery packs in energy storage containers is increasing continuously, and at the same time, the capacity of battery packs is also increasing continuously. The capacity of the battery pack has been increased from 3.44 Mwh to 5 Mwh, which results in a continuous increase in the heat generation of the battery pack. Therefore, it is necessary to dissipate heat from it in a timely manner during use. In order to improve the heat dissipation efficiency of the battery pack, a liquid cooling method is usually adopted to dissipate heat from it.

[0003] In related liquid cooling solutions, heat exchange components are arranged on the battery. The liquid in the heat exchange components exchanges heat with the battery and then is connected to a liquid cooling unit through a pipeline, and is dissipated by the liquid cooling unit and then returns to the heat exchange components. In this way, the liquid cooling of the battery is realized reciprocally. However, the heat dissipation of a single liquid cooling unit for the battery pack is limited, thus unable to meet the heat dissipation requirements of the device. Summary of the Utility Model

[0004] Embodiments of the utility model provide an energy storage container and an energy storage system, which can improve the technical problem of low heat dissipation efficiency in related technologies.

[0005] In a first aspect, embodiments of the utility model provide an energy storage container, which includes: a box body having a first accommodation cavity and a second accommodation cavity; a plurality of battery packs arranged at intervals in the first accommodation cavity along a first direction; a cooling assembly including a plurality of liquid cooling members arranged at intervals in the first direction and a liquid cooling pipeline. The liquid cooling members are arranged in the second accommodation cavity, and the liquid cooling members and the liquid cooling pipeline are respectively arranged in one-to-one correspondence with the battery packs. The liquid cooling members are used to drive the coolant to flow in the corresponding liquid cooling pipeline to cool the corresponding battery pack.

[0006] In an embodiment, the energy storage container further includes a connecting pipe, and adjacent two liquid cooling pipelines are connected through the connecting pipe.

[0007] In an embodiment, the energy storage container further includes a valve body arranged on the connecting pipe, and the valve body is used to control the connection or closing of the connecting pipe.

[0008] In one embodiment, each battery pack includes a plurality of battery modules arranged in an array in the second direction and the third direction. The energy storage container further includes a plurality of liquid cooling plates, which are arranged in one-to-one correspondence with the battery modules, and the liquid cooling plates are connected to at least one outer side wall of the battery modules. The liquid cooling pipeline is connected to the liquid cooling plates to dissipate heat from the battery modules. The first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0009] In one embodiment, the liquid cooling plate has a cooling cavity, an inlet and an outlet respectively communicating with the cooling cavity, and the liquid cooling pipeline is connected to the inlet and the outlet to enable the coolant to flow in the cooling cavity.

[0010] In one embodiment, the liquid cooling pipeline includes an inlet pipeline and an outlet pipeline. One end of the inlet pipeline is connected to the corresponding inlet, the other end of the inlet pipeline is connected to the corresponding liquid cooling component, one end of the outlet pipeline is connected to the corresponding outlet, and the other end of the outlet pipeline is connected to the corresponding liquid cooling component.

[0011] In one embodiment, a plurality of inlet branches are provided on the inlet pipeline, and a plurality of outlet branches are provided on the outlet pipeline. The inlet branches are arranged in one-to-one correspondence with the inlets, and the outlet branches are arranged in one-to-one correspondence with the outlets.

[0012] In one embodiment, the cooling assembly further includes an air cooling component, which is arranged in the second accommodation cavity to convey a cooling medium to the first accommodation cavity. An air inlet and an air outlet respectively communicating with the first accommodation cavity are further provided on the box body, and the air cooling component enables the air in the box body to exchange heat with the outside through the air inlet and the air outlet.

[0013] In one embodiment, the air inlet is arranged near the top of the box body, and the air outlet is arranged near the bottom of the box body.

[0014] In one embodiment, the energy storage container further includes a third accommodation cavity and a fourth accommodation cavity. The third accommodation cavity and the fourth accommodation cavity are arranged in sequence along the first direction and are located on the side of the first accommodation cavity away from the second accommodation cavity. The third accommodation cavity is used to accommodate a power distribution cabinet, and the fourth accommodation cavity is used to accommodate a fire protection cabinet.

[0015] In a second aspect, an embodiment of the present invention provides an energy storage system, which includes the above-mentioned energy storage container.

[0016] Applying the technical solution of the present utility model, a plurality of battery packs are arranged in the first accommodation cavity, and a liquid cooling component is arranged in the second accommodation cavity. In this way, it can prevent mutual interference between the liquid cooling component and the battery packs during operation, thereby ensuring the operation stability of the energy storage container. At the same time, a plurality of liquid cooling components and liquid cooling pipelines arranged at intervals in the first direction are arranged in the second accommodation cavity, and the liquid cooling components and the liquid cooling pipelines are respectively arranged in one-to-one correspondence with the battery packs. In this way, when the energy storage container is operating, each liquid cooling component can cool the corresponding battery pack, thereby improving the heat dissipation efficiency of the energy storage container, ensuring that the heat of each battery pack can be dissipated, and thus being beneficial to maintaining the stable operation of the energy storage container. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional schematic diagram of an energy storage container provided by an embodiment of the present utility model;

[0019] Figure 2 is a partial structural schematic diagram of an energy storage container provided by an embodiment of the present utility model;

[0020] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0021] Figure 4 is a top view schematic diagram of a part of the structure of an energy storage container provided by an embodiment of the present utility model;

[0022] Figure 5 is a structural schematic diagram of a battery pack and a liquid cooling plate provided by an embodiment of the present utility model.

[0023] Among them, the above-mentioned drawings include the following reference numerals:

[0024] 10, box body; 11, first accommodation cavity; 12, second accommodation cavity; 13, air inlet; 14, air outlet; 15, third accommodation cavity; 16, fourth accommodation cavity;

[0025] 20, battery pack; 21, battery module;

[0026] 30, cooling assembly; 31, liquid cooling component; 32, liquid cooling pipeline; 33, liquid inlet pipeline; 331, liquid inlet branch; 34, liquid outlet pipeline; 341, liquid outlet branch;

[0027] 40. Liquid cooling plate; 41. Liquid inlet; 42. Liquid outlet;

[0028] 50. Valve body;

[0029] 60. Connecting pipe;

[0030] X. First direction; Y. Second direction; Z. Third direction. Detailed implementation manner

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present invention.

[0032] As Figures 1 to 5 shown, in a first aspect, an embodiment of the present invention provides an energy storage container, which includes: a box body 10 having a first accommodation cavity 11 and a second accommodation cavity 12; a plurality of battery packs 20 arranged at intervals in the first direction in the first accommodation cavity 11; a cooling assembly 30, the cooling assembly 30 includes a plurality of liquid cooling members 31 arranged at intervals in the first direction and a plurality of liquid cooling pipelines 32, the liquid cooling members 31 are arranged in the second accommodation cavity 12, the liquid cooling members 31 and the liquid cooling pipelines 32 are respectively arranged in one-to-one correspondence with the battery packs 20, and the liquid cooling members 31 are used to drive the coolant to flow in the corresponding liquid cooling pipelines 32 to cool the corresponding battery packs 20.

[0033] Applying the technical solution of the present invention, a plurality of battery packs 20 are arranged in the first accommodation cavity 11, and liquid cooling members 31 are arranged in the second accommodation cavity 12, so that it is possible to prevent mutual interference between the liquid cooling members 31 and the battery packs 20 during operation, thereby ensuring the operation stability of the energy storage container. At the same time, a plurality of liquid cooling members 31 and liquid cooling pipelines 32 arranged at intervals in the first direction are arranged in the second accommodation cavity 12, and the liquid cooling members 31 and the liquid cooling pipelines 32 are respectively arranged in one-to-one correspondence with the battery packs 20. In this way, during the operation of the energy storage container, each liquid cooling member 31 can cool the corresponding battery pack 20, thereby improving the heat dissipation efficiency of the energy storage container and ensuring that the heat of each battery pack 20 can be dissipated, which is beneficial to maintaining the stable operation of the energy storage container.

[0034] In this application, X is the first direction, Y is the second direction; Z is the third direction.

[0035] In one embodiment, each battery pack 20 includes a plurality of battery modules 21 arranged in an array in the second direction and the third direction. The energy storage container further includes a plurality of liquid cooling plates 40, which are arranged in one-to-one correspondence with the battery modules 21, and the liquid cooling plates 40 are connected to at least one outer side wall of the battery modules 21. The liquid cooling pipeline 32 is connected to the liquid cooling plates 40 to dissipate heat from the battery modules 21. The first direction, the second direction, and the third direction are perpendicular to each other pairwise. With this arrangement, it is possible to ensure individual cooling of each battery module 21, thereby further improving the cooling efficiency of the cooling assembly 30.

[0036] Specifically, the liquid cooling plate 40 has a cooling cavity, an inlet 41 and an outlet 42 that are respectively connected to the cooling cavity. The liquid cooling pipeline 32 is connected to the inlet 41 and the outlet 42 to enable the coolant to flow in the cooling cavity. With this arrangement, the flow efficiency of the coolant can be improved, thereby meeting the heat dissipation requirements of the battery module 21.

[0037] In the present application, doors are further provided on both sides of the box body 10 in the first direction. The user can open or close the doors to replace or maintain the battery modules 21 in the first accommodation cavity 11, which facilitates the user to directly enter each accommodation cavity from the corresponding door outside the box body 10 and also facilitates the installation and detection of equipment in each accommodation cavity. Considering the waterproof requirements of the energy storage container, the doors and the box body 10 can be set to be hermetically connected. For example, sealing strips can be provided at the door seams to improve the sealing performance of the box body 10.

[0038] In one embodiment, the liquid cooling pipeline 32 includes an inlet pipeline 33 and an outlet pipeline 34. One end of the inlet pipeline 33 is connected to the corresponding inlet 41, and the other end of the inlet pipeline 33 is connected to the corresponding liquid cooling component 31. One end of the outlet pipeline 34 is connected to the corresponding outlet 42, and the other end of the outlet pipeline 34 is connected to the corresponding liquid cooling component 31. By setting the above structure, the coolant can circulate between the inlet pipeline 33 and the outlet pipeline 34, and the liquid cooling plate 40 continuously exchanges heat with the battery module 21, thereby enabling real-time heat exchange of the battery module 21 to keep the battery module 21 operating at a normal temperature, and thus improving the stability of the battery module 21 during operation.

[0039] Further, a plurality of inlet branches 331 are provided on the inlet pipeline 33, and a plurality of outlet branches 341 are provided on the outlet pipeline 34. The inlet branches 331 are arranged in one-to-one correspondence with the inlets 41, and the outlet branches 341 are arranged in one-to-one correspondence with the outlets 42. With this arrangement, it can be ensured that each liquid cooling plate 40 has coolant, thereby making the heat dissipation of multiple battery modules 21 more uniform and facilitating ensuring the heat dissipation efficiency of the battery modules 21.

[0040] In one embodiment, the energy storage container further includes a valve body 50 and a connecting pipe 60. A connecting pipe 60 is arranged between two adjacent liquid cooling pipelines 32, and the valve body 50 is arranged on the connecting pipe 60. The valve body 50 is used to control the connection or closing of two adjacent liquid cooling pipelines 32. With such an arrangement, during operation, by closing the valve body 50, it is ensured that each liquid cooling component 31 operates independently without interference, so that the highest cooling and heat dissipation efficiency of each liquid cooling component 31 can be guaranteed. When one of two adjacent liquid cooling components 31 needs to be maintained, the valve body 50 is opened, and the coolant of one liquid cooling component 31 flows through the circulation pipe to the liquid cooling pipeline 32 on the other side, so as to ensure the normal operation of the entire energy storage container without shutting down.

[0041] In the present application, the valve body 50 is specifically a globe valve. Since the sealing surface between the valve disc and the valve seat of the globe valve is relatively narrow, it is easy to achieve sealing when closed, and the sealing performance is reliable and not easy to leak, so that the sealing effect of the valve body 50 can be guaranteed. At the same time, the sealing surface between the valve disc and the valve seat of the globe valve is in linear contact, and the stroke of the valve disc is relatively large, so that it has good flow regulation performance. By rotating the handwheel or adjusting the screw rod, the opening degree of the valve can be conveniently adjusted, so as to achieve precise control of the coolant flow rate. And the structure of the globe valve is relatively simple, and manufacturing and maintenance are relatively convenient. At the same time, its volume is small, which is convenient for installation and layout. Thus, the use cost of the valve body 50 can be reduced.

[0042] Furthermore, the globe valve usually adopts a manual operation mode. By rotating the handwheel or handle to drive the valve disc to lift, the truncation or connection of the medium is realized. The above structure is simple and labor-saving in operation, and the switching is rapid, which is beneficial to meet the control of the coolant flow direction.

[0043] Specifically, the cooling assembly 30 further includes an air cooling component. The air cooling component is arranged in the second accommodation cavity 12 to convey a cooling medium to the first accommodation cavity 11. An air inlet 13 and an air outlet 14 respectively communicating with the first accommodation cavity 11 are further arranged on the box body 10. The air cooling component enables the air inside the box body 10 to exchange heat with the outside through the air inlet 13 and the air outlet 14. With such an arrangement, through the air cooling component, the air flow inside the first accommodation cavity 11 can be driven to flow, so as to reduce the temperature difference existing at each position inside the first accommodation cavity 11, which is beneficial to accelerating the cooling of the battery pack 20.

[0044] Furthermore, the air inlet 13 is arranged near the top of the box body 10, and the air outlet 14 is arranged near the bottom of the box body 10. Optionally, the air inlet 13 can also be arranged near the bottom of the box body 10, and the air outlet 14 is arranged near the top of the box body 10. The specific setting situation should be selected according to the use environment of the energy storage container, so as to improve the applicability and application range of the energy storage container.

[0045] In one embodiment, the energy storage container further includes a third accommodation chamber 15 and a fourth accommodation chamber 16. The third accommodation chamber 15 and the fourth accommodation chamber 16 are arranged in sequence along the first direction and are located on the side of the first accommodation chamber 11 away from the second accommodation chamber 12. The third accommodation chamber 15 is used to accommodate the power distribution cabinet, and the fourth accommodation chamber 16 is used to accommodate the fire protection cabinet. The box body 10 is also provided with a safety door outside the fourth accommodation chamber 16. The safety door is provided with a fire emergency start-stop device and a warning device. Users can start and stop relevant fire protection devices urgently from outside the box body 10 through the fire emergency start-stop device on the safety door, and users can learn about the safety status in the battery compartment through the warning device.

[0046] In other embodiments of the present application, the third accommodation chamber 15 can also accommodate the power distribution cabinet and the busbar cabinet at the same time. Setting the power distribution cabinet and the busbar cabinet in the independent third accommodation chamber 15 can ensure the stable operation of both and avoid being affected by the electrical components in other accommodation chambers, which is convenient for later maintenance. Moreover, the third accommodation chamber 15 is also equipped with a power distribution control cabinet, monitoring, induction detection equipment, lighting systems, etc., which can ensure the normal operation of these electronic instruments. Among them, the power distribution cabinet and the busbar cabinet include an EMU energy management unit, a UPS power supply, a BMS battery management system, power distribution equipment, etc.

[0047] In a second aspect, an embodiment of the present utility model provides an energy storage system, and the energy storage system includes the above-mentioned energy storage container.

[0048] Applying the technical solution of the present utility model, a plurality of battery packs 20 are arranged in the first accommodation chamber 11, and a liquid cooling member 31 is arranged in the second accommodation chamber 12. This can prevent interference between the liquid cooling member 31 and the battery packs 20 during operation, thereby ensuring the operation stability of the energy storage container. At the same time, a plurality of liquid cooling members 31 and liquid cooling pipelines 32 arranged at intervals along the first direction are arranged in the second accommodation chamber 12, and the liquid cooling members 31 and the liquid cooling pipelines 32 are respectively arranged in one-to-one correspondence with the battery packs 20. In this way, when the energy storage container is operating, each liquid cooling member 31 can cool the corresponding battery pack 20, thereby improving the heat dissipation efficiency of the energy storage container, ensuring that the heat of each battery pack 20 can be dissipated, and thus being beneficial to maintaining the stable operation of the energy storage container.

[0049] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0051] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0052] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationships of one device or feature shown in the drawings with other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0053] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above words have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0054] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An energy storage container, characterized in that: The energy storage container comprises: The box body has a first accommodating cavity and a second accommodating cavity; A plurality of battery packs are arranged in the first accommodation cavity at intervals along a first direction; A cooling component, the cooling component includes a plurality of liquid cooling components and a plurality of liquid cooling pipelines arranged at intervals along the first direction, the liquid cooling components are arranged in the second accommodating cavity, the liquid cooling components and the liquid cooling pipelines are respectively arranged in a one-to-one correspondence with the battery packs, and the liquid cooling components are used to drive the coolant to flow in the corresponding liquid cooling pipelines to cool the corresponding battery packs.

2. The energy storage container according to claim 1, characterized in that: The energy storage container also includes a connecting pipe, and two adjacent liquid cooling pipelines are connected through the connecting pipe.

3. The energy storage container according to claim 2, characterized in that: The energy storage container further includes a valve body, which is disposed on the connecting pipe and is used to control the connection or closing of the connecting pipe.

4. The energy storage container according to any one of claims 1 to 3, characterized in that: Each of the battery groups includes a plurality of battery packs arranged in an array along a second direction and a third direction. The energy storage container also includes a plurality of liquid cooling plates. The liquid cooling plates are arranged in a one-to-one correspondence with the battery packs, and the liquid cooling plates are connected to at least one outer side wall of the battery packs. The liquid cooling pipelines are connected to the liquid cooling plates to dissipate heat from the battery packs. The first direction, the second direction, and the third direction are perpendicular to each other.

5. The energy storage container according to claim 4, characterized in that: The liquid cooling plate has a cooling cavity and a liquid inlet and a liquid outlet respectively connected to the cooling cavity, and the liquid cooling pipeline is connected to the liquid inlet and the liquid outlet to allow the cooling liquid to flow in the cooling cavity.

6. The energy storage container according to claim 5, characterized in that: The liquid cooling pipeline includes a liquid inlet pipeline and a liquid outlet pipeline, one end of the liquid inlet pipeline is connected to the corresponding liquid inlet, the other end of the liquid inlet pipeline is connected to the corresponding liquid cooling component, one end of the liquid outlet pipeline is connected to the corresponding liquid outlet, and the other end of the liquid outlet pipeline is connected to the corresponding liquid cooling component.

7. The energy storage container according to claim 6, characterized in that: The liquid inlet pipeline is provided with a plurality of liquid inlet branches, and the liquid outlet pipeline is provided with a plurality of liquid outlet branches. The liquid inlet branches are provided in a one-to-one correspondence with the liquid inlets, and the liquid outlet branches are provided in a one-to-one correspondence with the liquid outlets.

8. The energy storage container according to any one of claims 1-3 or 5-7, characterized in that: The cooling assembly also includes an air-cooling component, which is arranged in the second accommodating cavity to transport cooling medium to the first accommodating cavity. The box body is also provided with an air inlet and an air outlet respectively connected to the first accommodating cavity. The air-cooling component exchanges heat between the air in the box body and the outside through the air inlet and the air outlet.

9. The energy storage container according to claim 8, characterized in that: The air inlet is arranged close to the top of the box body, and the air outlet is arranged close to the bottom of the box body.

10. The energy storage container according to claim 1, characterized in that: The energy storage container also includes a third accommodating chamber and a fourth accommodating chamber, which are arranged in sequence along the first direction and are located on a side of the first accommodating chamber away from the second accommodating chamber. The third accommodating chamber is used to accommodate a power distribution cabinet, and the fourth accommodating chamber is used to accommodate a fire extinguishing cabinet.

11. An energy storage system, characterized in that: The energy storage system comprises the energy storage container as described in any one of claims 1-10.

Images