Energy storage cabinet and energy storage equipment

Abstract

The utility model relates to an energy storage cabinet and energy storage equipment, the energy storage cabinet comprises a cabinet body, a pipeline structure and a first exhaust valve, the cabinet body is internally provided with at least one accommodating space, the accommodating space is suitable for accommodating a battery module, the pipeline structure is mounted on the cabinet body, and the pipeline structure comprises a first liquid outlet pipe and an exhaust pipe; one end of each exhaust pipe is suitable for being communicated with the interior of the corresponding battery module, the other end of each exhaust pipe is communicated with the first liquid outlet pipe, the first liquid outlet pipe is communicated with the interior of the battery module, and the first exhaust valve is arranged on the first liquid outlet pipe and is communicated with the interior of the first liquid outlet pipe. The exhaust pipe is mounted on the battery module and connected to the first liquid outlet pipe, the first liquid outlet pipe is used for exhausting the battery module, and the first liquid outlet pipe is also used for discharging cooling liquid in the battery module, so that the pipeline structure of the energy storage cabinet is simplified, and the occupied space of the pipeline structure in the energy storage cabinet is reduced; and the space utilization rate of the energy storage cabinet is improved, so that the energy density of the energy storage cabinet is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage, and in particular, to an energy storage cabinet and an energy storage device. Background Art

[0002] The function of the energy storage cabinet is to store energy. Since the energy storage cabinet needs to discharge and store energy, the energy storage cabinet generates heat severely. Therefore, the heat dissipation structure of the energy storage cabinet is particularly important. In the related art, the heat dissipation method of the energy storage cabinet generally can set pipes in the energy storage cabinet, and utilize the pipes to exchange heat through the coolant to achieve the heat dissipation effect. However, the structure of the pipes in the related art is complex and occupies a large space. Utility Model Content

[0003] The purpose of the present disclosure is to provide an energy storage cabinet and an energy storage device to at least partially solve the technical problems existing in the related art.

[0004] To achieve the above purpose, according to the first aspect of the present disclosure, there is provided an energy storage cabinet, including

[0005] a cabinet body, at least one accommodation space is arranged in the cabinet body, and the accommodation space is suitable for accommodating a battery module;

[0006] a pipe structure, installed on the cabinet body, the pipe structure includes a first liquid outlet pipe and an exhaust pipe, one end of the exhaust pipe is suitable for being communicated with the inside of the battery module, and the other end of the exhaust pipe is communicated with the first liquid outlet pipe;

[0007] the first liquid outlet pipe is communicated with the inside of the battery module; and

[0008] a first exhaust valve, arranged on the first liquid outlet pipe and communicated with the inside of the first liquid outlet pipe.

[0009] Optionally, the energy storage cabinet further includes a second liquid outlet pipe, the liquid inlet end of the second liquid outlet pipe is suitable for being communicated with the inside of the battery module, and the liquid outlet end of the second liquid outlet pipe is communicated with the first liquid outlet pipe.

[0010] Optionally, the pipe structure further includes a first liquid inlet pipe and a second liquid inlet pipe;

[0011] the liquid inlet end of the second liquid inlet pipe is communicated with the first liquid inlet pipe, and the liquid outlet end of the second liquid inlet pipe is suitable for being communicated with the inside of the battery module.

[0012] Optionally, a check valve is arranged on the exhaust pipe, and the check valve allows the gas from inside the battery module to pass through.

[0013] Optionally, the number of the accommodating spaces is plural, the plural accommodating spaces are arranged along the height direction of the energy storage cabinet, the first liquid outlet pipe is arranged along the height direction of the energy storage cabinet, and the first exhaust valve is arranged at the upper end of the first liquid outlet pipe.

[0014] Optionally, the number of the accommodating spaces is plural, the plural accommodating spaces are arranged along the height direction of the energy storage cabinet, the first liquid inlet pipe is arranged along the height direction of the energy storage cabinet, and the liquid inlet of the first liquid inlet pipe is located at the lower end or the upper end of the first liquid inlet pipe.

[0015] Optionally, the energy storage cabinet further includes a second exhaust valve, and the second exhaust valve is arranged at the upper end of the first liquid inlet pipe.

[0016] Optionally, the first liquid inlet pipe and the first liquid outlet pipe are located on the same side of the energy storage cabinet.

[0017] Optionally, the cabinet body includes an outer shell and at least one support frame connected to the outer shell, and the accommodating space is defined between the corresponding part of the support frame and the outer shell.

[0018] Optionally, the support frame includes an annular outer frame and an intermediate beam located inside the annular outer frame, and a channel adapted to allow the exhaust structure of the battery module to pass through is arranged inside the intermediate beam.

[0019] Optionally, the energy storage cabinet further includes at least one battery module, each battery module is accommodated in a corresponding accommodating space, and one end of each exhaust pipe is communicated with the inside of the battery module.

[0020] Optionally, the battery cells inside the battery module are adapted to be in direct contact with the coolant inside the battery module and are immersed or sprayed by the coolant.

[0021] Optionally, the pipeline structure further includes a plurality of second liquid outlet pipes and second liquid inlet pipes, the liquid inlet end of the second liquid outlet pipe is adapted to be communicated with the inside of the battery module, and the liquid outlet end of each second liquid inlet pipe is adapted to be communicated with the inside of the corresponding battery module;

[0022] The liquid outlet end of the second liquid inlet pipe is connected to the first side of the battery module, the liquid inlet end of the second liquid outlet pipe is connected to the second side of the battery module, and the second side and the first side are opposite sides of the battery module.

[0023] Optionally, an exhaust port is provided on the top cover of the battery module, and the exhaust pipe is connected to the exhaust port.

[0024] Optionally, an exhaust structure is provided on the top cover. The exhaust structure includes a body, and an exhaust cavity is provided inside the body. The height of the lowest position of the exhaust cavity is higher than the lower surface of the top cover;

[0025] The exhaust cavity is in communication with the interior of the battery module through the exhaust port, and the exhaust pipe is in communication with the exhaust cavity.

[0026] Optionally, the exhaust structure further includes a joint, which is connected to the body and in communication with the exhaust cavity, and the joint is used to connect to the exhaust pipe.

[0027] Optionally, the highest liquid level of the first liquid outlet pipe is higher than the highest liquid level inside the battery module located at the highest position among the plurality of battery modules.

[0028] According to a second aspect of the present disclosure, there is provided an energy storage device including a plurality of the above-mentioned energy storage cabinets.

[0029] Through the above technical solutions, an exhaust pipe is installed on the battery module, and then the exhaust pipe is connected to the first liquid outlet pipe. The first liquid outlet pipe exhausts the battery module through the first exhaust valve, and the first liquid outlet pipe can also be used for discharging the coolant inside the battery module. Therefore, the first liquid outlet pipe can serve as a channel for both discharging and exhausting the battery module, achieving the effect of dual use. This design is beneficial to simplifying the pipeline structure of the energy storage cabinet, reducing the occupied space of the pipeline structure in the energy storage cabinet, improving the space utilization rate of the energy storage cabinet, and thus improving the energy density of the energy storage cabinet.

[0030] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0032] Figure 1 is a schematic perspective view of an energy storage cabinet provided by an embodiment of the present disclosure;

[0033] Figure 2 is a schematic perspective view of a partial structure of an energy storage cabinet provided by an embodiment of the present disclosure, where the outer shell is not shown;

[0034] Figure 3 is Figure 2 an enlarged view of part A of

[0035] Figure 4 is a schematic perspective view of another perspective of an energy storage cabinet provided by an embodiment of the present disclosure, where the outer shell is not shown;

[0036] Figure 5 It is a three-dimensional schematic diagram of a partial structure including a single battery module and a partial pipeline structure provided by an embodiment of the present disclosure;

[0037] Figure 6 It is a three-dimensional structural schematic diagram of the top cover of the battery module provided by an embodiment of the present disclosure;

[0038] Figure 7 It is a sectional view schematic diagram of the top cover of the battery module provided by an embodiment of the present disclosure;

[0039] Figure 8 is Figure 7 an enlarged view of part B;

[0040] Figure 9 It is a sectional view schematic diagram of the battery module provided by an embodiment of the present disclosure;

[0041] Figure 10 It is a schematic diagram of the pipeline structure principle provided by an embodiment of the present disclosure, wherein the arrow shows the flow direction of the coolant;

[0042] Figure 11 It is a schematic diagram of the coolant filling control logic provided by an embodiment of the present disclosure;

[0043] Figure 12 It is a schematic diagram of the explosion-proof control logic of the battery module provided by an embodiment of the present disclosure.

[0044] Explanation of reference numerals

[0045] 100, energy storage cabinet, 10, cabinet body, 11, outer shell, 12, support frame, 121, annular outer frame, 122, middle beam, 20, pipeline structure, 21, exhaust pipe, 22, first liquid outlet pipe, 23, second liquid outlet pipe, 24, first liquid inlet pipe, 25, second liquid inlet pipe, 30, first exhaust valve, 40, second exhaust valve, 50, battery module, 51, top cover, 511, exhaust port, 52, exhaust structure, 521, body, 522, exhaust cavity, 523, joint, 53, accommodation cavity, 60, liquid inlet valve, 70, liquid outlet valve, 80, electronic control module. Detailed description of the specific implementation mode

[0046] The following will describe in detail the specific implementation mode of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation mode described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0047] In this disclosure, unless otherwise stated, the orientation terms such as "upper, lower, top, bottom" are usually defined according to the drawing direction of the corresponding drawings. It is only for the convenience of describing this disclosure and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to this disclosure. For example, the upper, lower, top, and bottom can be the upper, lower, top, and bottom of the energy storage cabinet when it is in a normal use state. Among them, the height direction (up and down direction) of the energy storage cabinet can be Figure 1 the height direction marked in the figure. "Inner and outer" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. used are to distinguish one element from another element, and do not have sequentiality and importance.

[0048] In the description of this disclosure, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "coupled", "installed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0049] As described above, the structural simplification of the pipeline of the energy storage cabinet is the current research trend.

[0050] In view of this, as Figures 1 to 9 shown, an energy storage cabinet 100 includes a cabinet body 10, a pipeline structure 20, and a first exhaust valve 30. At least one accommodation space is provided inside the cabinet body 10, and the accommodation space is adapted to accommodate a battery module 50. The pipeline structure 20 is installed on the cabinet body 10. The pipeline structure 20 includes a first liquid outlet pipe 22 and an exhaust pipe 21. One end of each exhaust pipe 21 is adapted to communicate with the inside of the corresponding battery module 50, and the other end of each exhaust pipe 21 communicates with the first liquid outlet pipe 22. The first liquid outlet pipe 22 communicates with the inside of the battery module 50. The first exhaust valve 30 is provided on the first liquid outlet pipe 22 and communicates with the inside of the first liquid outlet pipe 22.

[0051] Through the above technical solution, the exhaust pipe 21 is installed on the battery module 50, and then the exhaust pipe 21 is connected to the first liquid outlet pipe 22. The first liquid outlet pipe 22 exhausts the battery module 50 through the first exhaust valve 30, and the first liquid outlet pipe 22 can also be used for discharging the coolant inside the battery module 50. So that the first liquid outlet pipe 22 can play the role of draining and exhausting the battery module 50, achieving the effect of one thing with two uses. This design is beneficial to simplifying the pipeline structure 20 of the energy storage cabinet 100, reducing the occupied space of the pipeline structure 20 in the energy storage cabinet 100, beneficial to improving the space utilization rate of the energy storage cabinet 100, and thus beneficial to improving the energy density of the energy storage cabinet 100.

[0052] In the present disclosure, when multiple battery modules are provided in the energy storage cabinet 100, by installing exhaust pipes 21 on each battery module 50 and then connecting the multiple exhaust pipes 21 to a unified first liquid outlet pipe 22, the first liquid outlet pipe 22 performs unified exhaust on the multiple battery modules 50 through a first exhaust valve 30, thus solving the problem of exhausting the battery modules 50 inside the energy storage cabinet 100.

[0053] Moreover, with such a design, it is possible to avoid installing an exhaust valve for each battery module 50 and avoid separately arranging exhaust pipes that connect the inside of each battery module 50 to the outside of the energy storage cabinet 100, which is beneficial to simplifying the structure of the pipeline structure 20 of the energy storage cabinet 100, reducing the occupied space of the pipeline structure 20 inside the energy storage cabinet 100, improving the space utilization rate of the energy storage cabinet 100, and thus being beneficial to increasing the energy density of the energy storage cabinet 100.

[0054] In addition, due to the limited space inside the cabinet and the relatively large volume of the mechanical exhaust valve, when multiple battery modules 50 need to be equipped with exhaust valves, a breathable valve structure (membrane structure) is usually installed. This type of exhaust valve is easily corroded and needs to be frequently replaced, which will affect the lifespan of the battery module 50. In this application, the gases of multiple battery modules 50 are discharged through a single first exhaust valve 30. Since the first exhaust valve 30 can occupy a relatively large space, the first exhaust valve 30 can be set as a mechanical exhaust valve. The mechanical exhaust valve is durable and not easily corroded, and does not need to be frequently replaced, so the lifespan of the battery module 50 can be increased.

[0055] The battery module 50 may include the housing of the battery module 50 and a receiving cavity 53 located inside the housing of the battery module 50 for accommodating battery cells. One end of each exhaust pipe 21 communicating with the inside of the corresponding battery module 50 means that one end of each exhaust pipe 21 communicates with the receiving cavity 53 of the corresponding battery module 50, and the liquid inlet end of each second liquid outlet pipe 23 communicating with the inside of the corresponding battery module 50 means that the liquid inlet end of the second liquid outlet pipe 23 communicates with the receiving cavity 53 of the corresponding battery module 50.

[0056] In the present disclosure, one end of the exhaust pipe 21 is connected to the inside of the battery module 50, so the gas that needs to be discharged inside the battery module 50 can be discharged through the exhaust pipe 21. The other end of the exhaust pipe 21 is connected to the first liquid outlet pipe 22, and a first exhaust valve 30 is provided on the first liquid outlet pipe 22. When multiple battery modules 50 need to be exhausted, they can be discharged simultaneously through the first liquid outlet pipe 22. With such a setting, it is not necessary to install an exhaust valve on each battery module 50, and the distance between two battery modules 50 can be reduced, that is, the space utilization rate of the energy storage cabinet 100 can be increased, which is beneficial to increasing the energy density of the energy storage cabinet 100.

[0057] In the present disclosure, the accommodation space refers to the installation space within the cabinet 10 that is separated and can accommodate the battery module 50. It can be an open cavity or a cavity with a closed structure. At this time, the accommodation cavity can accommodate the battery cells inside the battery module 50. The pipe structure 20 can be applicable to the exhaust and liquid discharge of the energy storage cabinet 100 equipped with the battery module 50, and can also be applicable to other energy storage cabinets 100 that require exhaust, such as energy storage cabinets 100 for chemical energy storage or mechanical energy storage. In this article, the energy storage cabinet 100 equipped with the battery module 50 is taken as an example.

[0058] It can be understood that in the present disclosure, each accommodation space can accommodate only one battery module 50 or more than one battery module 50, and the present disclosure does not limit this.

[0059] It can be understood that in the present disclosure, the battery module 50 can refer to a battery module or a battery pack including multiple battery modules. The present disclosure does not limit this.

[0060] In the present disclosure, the energy storage cabinet 100 further includes a second liquid discharge pipe 23. The liquid inlet end of the second liquid discharge pipe 23 is adapted to communicate with the interior of the battery module 50, and the liquid outlet end of the second liquid discharge pipe 23 communicates with the first liquid discharge pipe 22.

[0061] In the present disclosure, the first liquid discharge pipe 22 is connected to the interior of the battery module 50 through the second liquid discharge pipe 23 for liquid discharge and is also connected to the interior of the battery module 50 through the exhaust pipe 21 for exhaust. As long as a pipe is needed for both exhaust and liquid discharge, space can be saved.

[0062] In addition, the first liquid discharge pipe 22 is connected to the battery module 50 through the second liquid discharge pipe 23, which can facilitate the unified liquid discharge when multiple battery modules 50 are provided.

[0063] In some embodiments, two second liquid discharge pipes 23 can be provided for each battery module 50, and both second liquid discharge pipes 23 are connected to the first liquid discharge pipe 22 to facilitate liquid discharge.

[0064] In addition, when the battery module 50 is filled with coolant, the first liquid discharge pipe 22 will also be filled with coolant, that is, it can play a role in liquid sealing for the first liquid discharge pipe 22. There is no gas residue in the first liquid discharge pipe 22, and a better exhaust effect can be achieved to ensure the evacuation of gas inside the battery module 50.

[0065] In the present disclosure, as Figures 1 to 3As shown, in an embodiment where there are multiple battery modules 50 in the energy storage cabinet 100, the pipeline structure 20 may further include a first liquid inlet pipe 24, a single or multiple second liquid inlet pipes 25 (such as two or more second liquid inlet pipes 25). The liquid inlet end of the second liquid inlet pipe 25 communicates with the first liquid inlet pipe 24, and the liquid outlet end of the second liquid inlet pipe 25 is adapted to communicate with the inside of the corresponding battery module 50. The liquid outlet end of the second liquid inlet pipe 25 communicates with the accommodation cavity 53 of the corresponding battery module 50. By providing the first liquid inlet pipe 24 and the second liquid inlet pipes 25, coolant can be delivered to the battery modules 50. When the number of the second liquid inlet pipes 25 is multiple, connecting the first liquid inlet pipe 24 to the interiors of multiple battery modules 50 through multiple second liquid inlet pipes 25 can not only save space, but also facilitate the unified liquid inlet for the battery modules 50 and subsequent liquid replenishment.

[0066] In some embodiments, a single battery module 50 may correspond to two second liquid inlet pipes 25, and both of the two second liquid inlet pipes 25 are connected to the first liquid inlet pipe 24, which facilitates rapid liquid inlet.

[0067] In the present disclosure, in order to prevent the gas in the exhaust pipe 21 from flowing back into the battery module 50, a check valve is provided on the exhaust pipe 21. The check valve allows the gas from the battery module 50 to pass through, that is, the check valve can restrict the gas from flowing back from the second liquid outlet pipe 23 to the battery module 50.

[0068] In the present disclosure, as Figure 1 and Figure 2 shown, the number of accommodation spaces is multiple, and the multiple accommodation spaces can be arranged along the height direction of the energy storage cabinet 100 (such as Figure 1 the up-and-down direction in the drawing plane in the figure), that is, the battery modules 50 are arranged along the height direction of the energy storage cabinet 100, the first liquid outlet pipe 22 is arranged along the height direction of the energy storage cabinet 100, and the first exhaust valve 30 is provided at the upper end of the first liquid outlet pipe 22. With such an arrangement, it is convenient for the first liquid outlet pipe 22 to connect the exhaust pipe 21 and the second liquid outlet pipe 23, and it is convenient to arrange the positions of the first liquid outlet pipe 22 and the exhaust pipe 21. Due to the principle of gas floating, by providing the first exhaust valve 30 at the upper end of the first liquid outlet pipe 22, it is convenient for the gas to be discharged and completely drained.

[0069] In some embodiments, the first exhaust valve 30 is provided at the upper end of the first liquid outlet pipe 22, and a control valve (such as a ball valve) is provided at the lower end of the first liquid outlet pipe 22 to control the outflow of the coolant.

[0070] In the present disclosure, the first liquid outlet pipe 22 can be set as a straight pipe, which is not only convenient for layout and installation, conducive to simplifying the structure, but also beneficial to the smooth flow of the coolant.

[0071] In the present disclosure, as Figure 1 and Figure 2As shown, the number of accommodation spaces is multiple, and there are multiple battery modules 50 in the energy storage cabinet 100. In the embodiment where the multiple accommodation spaces are arranged along the height direction of the energy storage cabinet 100, the first liquid inlet pipe 24 is arranged along the height direction of the energy storage cabinet 100, and the liquid inlet of the first liquid inlet pipe 24 is located at the lower end or the upper end of the first liquid inlet pipe 24. With such a setting, it is convenient to connect the first liquid inlet pipe 24 to the second liquid inlet pipe 25. The liquid inlet of the first liquid inlet pipe 24 can be arranged at the upper end or the lower end, and the liquid inlet can be connected to a pipe for transporting the coolant (such as the coolant pipe of an air conditioning system) to obtain the coolant, and then sent into the battery module 50 through the first liquid inlet pipe 24 and the second liquid inlet pipe 25.

[0072] In the present disclosure, as Figure 1 , Figure 2 and Figure 5 shown, the energy storage cabinet 100 may further include a second exhaust valve 40, and the second exhaust valve 40 is arranged at the upper end of the first liquid inlet pipe 24. The second exhaust valve 40 arranged at the upper end of the first liquid inlet pipe 24 can be used to assist in exhausting the gas in the battery module 50.

[0073] In some embodiments, a second exhaust valve 40 is arranged at the upper end of the first liquid inlet pipe 24, and a control valve (such as a ball valve) is arranged at the lower end or other positions of the first liquid inlet pipe 24 to control the input of the coolant.

[0074] In the present disclosure, as Figure 1 , Figure 2 and Figure 5 shown, the first liquid outlet pipe 22 and the first liquid inlet pipe 24 may be located on the same side of the energy storage cabinet 100. For example, they are located on the side where the cabinet door of the energy storage cabinet 100 is located. With such a setting, the integration degree of the pipeline structure 20 can be improved, the layout of the pipeline structure 20 can be conveniently designed, and it is beneficial to improve the space utilization rate inside the cabinet 10.

[0075] The fact that the first liquid outlet pipe 22 and the first liquid inlet pipe 24 are located on the same side of the energy storage cabinet 100 here means that after the battery module 50 is installed, the first liquid outlet pipe 22 and the first liquid inlet pipe 24 are located on the same side of the battery module 50, which can improve the installation integration degree of the first liquid outlet pipe 22 and the first liquid inlet pipe 24.

[0076] For example, when the battery modules 50 are stacked and installed, the first liquid outlet pipe 22 and the first liquid inlet pipe 24 can be arranged at the front end of the cabinet 10, that is, the side where the cabinet 10 opens the door, which is convenient for maintenance and installation.

[0077] Or, when the battery module 50 is set to be pulled out, the first liquid outlet pipe 22 and the first liquid inlet pipe 24 can be arranged on the side of the cabinet 10, which is convenient for the overall push-pull of the battery module 50.

[0078] In the present disclosure, the first liquid inlet pipe 24 can be set as a straight pipe, which is not only convenient for layout and installation, conducive to simplifying the structure, but also beneficial to the smooth flow of the coolant.

[0079] In the present disclosure, the accommodation space can be constructed in any suitable manner, and the present disclosure does not limit this. In some embodiments, as Figures 1 to 5 shown, the cabinet 10 can include a housing 11 and at least one support frame 12 connected to the housing 11. An accommodation space is defined between the corresponding parts of the support frame 12 and the housing 11. When there is one support frame 12, an accommodation space can be defined between the support frame 12 and the corresponding part of the housing 11. In an embodiment where there are multiple battery modules 50 in the energy storage cabinet 100, multiple support frames 12 are provided, and the multiple support frames 12 are arranged at intervals along the height direction of the energy storage cabinet 100. An accommodation space is defined between two adjacent support frames 12 and the corresponding parts of the housing 11. The role of the support frame 12 is to support the battery module 50, provide an installation space for the battery module 50, and define the installation position of the battery module 50 to ensure the stability of the installation of the battery module 50.

[0080] In the present disclosure, as Figure 5 shown, the support frame 12 can include an annular outer frame 121 and an intermediate beam 122 located inside the annular outer frame 121. A channel is provided inside the intermediate beam 122 and is adapted for the exhaust structure 52 of the battery module 50 (such as Figure 5 the joint 523 of the exhaust structure 52 shown) to pass through. The roles of the annular outer frame 121 and the intermediate beam 122 are to support the battery module 50 and ensure the stability of the battery module 50. In addition, providing a channel inside the intermediate beam 122 for the exhaust structure 52 of the battery module to pass through can protect the exhaust structure 52 from damage and save space inside the cabinet.

[0081] In the present disclosure, as Figures 1 to 5 shown, the energy storage cabinet 100 can further include one or more battery modules 50. The battery modules 50 are accommodated in the corresponding accommodation spaces, and one end of the exhaust pipe 21 is communicated with the inside of the corresponding battery module 50.

[0082] In some embodiments, an electronic control module 80 is installed on the top of the battery module 50, which can be connected to the battery module 50 and control the battery module 50.

[0083] In the present disclosure, the battery cells inside the battery module 50 are adapted to be in direct contact with the coolant inside the battery module 50 and are immersed or sprayed by the coolant. That is, the heat exchange method of the battery cells here can be heat exchange by coolant immersion, or the battery cells can be heat exchanged by spraying the coolant onto the surface of the battery cells.

[0084] Among them, the coolant submerging the battery cells can ensure the cooling and heat exchange effect of the battery cells. At this time, an immersion battery module 50 is formed, and the energy storage cabinet 100 is configured as an immersion energy storage cabinet.

[0085] In the present disclosure, as Figure 2 and Figure 4 shown, in an embodiment where there are multiple battery modules 50 in the energy storage cabinet 100, the pipeline structure 20 further includes a second liquid outlet pipe 23 (single or multiple) and a second liquid inlet pipe 25 (single or multiple). In an embodiment where the liquid outlet end of the second liquid inlet pipe 25 is communicated with the inside of the battery module 50, the liquid outlet end of the second liquid inlet pipe 25 can be connected to the first side of the battery module 50, and the liquid inlet end of the second liquid outlet pipe 23 can be connected to the second side of the battery module 50. The second side and the first side are opposite sides of the battery module 50. The function of the second liquid inlet pipe 25 is to lead out the coolant inside the battery module 50, and the function of the second liquid inlet pipe 25 is to transport the coolant into the battery module 50. Connecting the liquid outlet end of the second liquid inlet pipe 25 and the liquid inlet end of the second liquid outlet pipe 23 on the opposite sides of the battery module 50 can ensure that when the coolant is discharged, the coolant can at least flow through the entire inside of the battery module 50 before flowing out, ensuring the heat exchange effect between the coolant and the inside of the battery module 50.

[0086] In some embodiments, as Figure 2 and Figure 4 shown, the liquid inlet of the second liquid outlet pipe 23 is connected to the front side of the battery module 50 (the side facing the opening direction of the energy storage cabinet 100), the liquid outlet of the second liquid inlet pipe 25 is connected to the back side of the battery module 50, and both the first liquid outlet pipe 22 and the first liquid inlet pipe 24 are arranged on the front side of the energy storage cabinet 100 (the side facing the opening direction of the energy storage cabinet 100). Since the second liquid outlet pipe 23 is arranged at the front end of the battery module 50 and is close to the first liquid outlet pipe 22, it can be directly connected to the first liquid outlet pipe 22. Since the second liquid inlet pipe 25 is connected to the back side of the battery module 50 and has a long winding distance, it can be connected to the first liquid inlet pipe 24 through the channel provided inside the above-mentioned intermediate beam 122, which can protect the second liquid inlet pipe 25 from being damaged and save space inside the cabinet.

[0087] In the present disclosure, as Figures 7 to 9 shown, the top cover 51 of the battery module 50 can be provided with an exhaust port 511, and the exhaust pipe 21 is connected to the exhaust port 511. Since the gas will float, the exhaust pipe 21 is arranged on the top cover 51 of the battery module 50 to facilitate the discharge of the gas.

[0088] In the present disclosure, as Figures 7 to 9As shown in the figure, an exhaust structure 52 can be provided on the top cover 51. The exhaust structure 52 includes a body 521. An exhaust cavity 522 is provided inside the body 521. The height of the lowest position of the exhaust cavity 522 is higher than the lower surface of the top cover 51, that is, the height of the lowest position of the exhaust cavity 522 is higher than the highest position of the accommodation cavity 53 inside the battery module. The exhaust cavity 522 is communicated with the inside of the battery module 50 through an exhaust port 511, and an exhaust pipe 21 is communicated with the exhaust cavity 522. When set like this, it is convenient to concentrate and discharge the gas inside the battery module 50.

[0089] In the related art, when the coolant enters the inside of the battery module, the gas inside the battery module will float up. When the coolant fills the entire battery module, the un-discharged gas will float between the lower surface of the top cover and the coolant and cannot be discharged centrally. In this case, it is usually necessary to add a gas-liquid separator to lead out part of the coolant and at the same time lead out the un-discharged gas.

[0090] In this application, an exhaust structure 52 is provided on the top cover 51. The height of the lowest position of the exhaust cavity 522 is higher than the lower surface of the top cover 51, so the exhaust cavity 522 is the highest position of the entire battery module 50. Due to the principle that gas will automatically float up, the un-discharged gas will not float irregularly on the lower surface of the entire top cover 51, but will be concentrated in the exhaust cavity 522, which can ensure the centralized discharge of gas. Therefore, there is no need to add an auxiliary exhaust structure such as a gas-liquid separator.

[0091] In some embodiments, two exhaust cavities 522 of a single battery module 50 can be provided, and two corresponding exhaust pipes 21 can be provided. Such a setting can facilitate the aggregation of gas and prevent the gas from being squeezed into the corners inside the battery module 50.

[0092] In this disclosure, as Figures 7 to 9 shown, the exhaust structure 52 can further include a connector 523. The connector 523 is connected to the body 521 and communicated with the exhaust cavity 522. The connector 523 is used to connect with the exhaust pipe 21. Such a setting can facilitate the connection of the exhaust pipe 21.

[0093] In this disclosure, as Figure 10 shown, in order to enable all battery modules 50 to achieve the effect of complete immersion of the battery module, the highest liquid level of the first liquid outlet pipe 22 is higher than the highest liquid level inside the battery module 50 at the highest position among the multiple battery modules 50.

[0094] In the present disclosure, the coolant can enter the second inlet pipe 25 through a control valve (inlet valve 60) provided on the first inlet pipe 24. The second inlet pipe 25 is connected to the back side of the battery module 50 and flows into the interior of the battery module 50. Then, it flows into the first outlet pipe 22 through the second outlet pipe 23 on the front side of the battery module 50, and finally flows out through the control valve (outlet valve 70) of the first outlet pipe 22. Since gas rises above the coolant, the air inside the battery module 50 will enter the first outlet pipe 22 from the exhaust pipe 21 through the exhaust cavity 522, float to the position of the first exhaust valve 30 in the first outlet pipe 22, and be discharged from the first exhaust valve 30.

[0095] As Figure 11 shown, when injecting the coolant, the control valve (inlet valve 60) provided on the first inlet pipe 24 is opened, and the control valve provided on the first outlet pipe 22 is closed (outlet valve 70), and the coolant is introduced. The coolant enters the first inlet pipe 24 through the control valve provided on the first inlet pipe 24, and then enters the battery module 50 through the second inlet pipe 25. The coolant inside the battery module then enters the first outlet pipe 22 through the second outlet pipe 23. Since the control valve provided on the first outlet pipe 22 is closed and the coolant cannot flow out, the interior of the first outlet pipe 22 begins to accumulate liquid. As the coolant is continuously introduced, the liquid levels in the pipelines of the first inlet pipe 24 and the first outlet pipe 22 rise, and the liquid level inside the battery module 50 also rises, thereby squeezing the air inside the battery module 50 to discharge it from the exhaust cavity 522 to the exhaust pipe 21, then to the first outlet pipe 22, and then discharged to the outside through the first exhaust valve 30. Some of the gas is also discharged through the second exhaust valve 40 on the first inlet pipe 24. Thus, it is possible to complete the infusion and discharge all the air inside. In the present disclosure, for secondary liquid injection, it is not necessary to disassemble the battery module 50, and replenishment can be achieved as long as liquid is injected into the first inlet pipe 24.

[0096] In the present disclosure, as Figure 12 shown, the first exhaust valve 30 can also be used as a pressure relief valve. For example, when the temperature rises to about 600 °C during short - circuit pyrolysis of the battery module 50, the internal temperature of the battery module 50 rises, and the internal gas pressure will also increase sharply. Without pressure relief measures, the internal high pressure will damage the housing of the battery module 50. In the present disclosure, when the temperature rises, the gas pressure increases, and the gas will concentrate at the top of the battery module 50. This part of the high - pressure gas can be sent into the first outlet pipe 22 through the exhaust pipe 21, and then output to the outside through the first exhaust valve 30 for pressure relief until the internal pressure is stable. And a one - way valve is used in the exhaust pipe 21 to connect, so there is no need to consider the problem of backflow.

[0097] According to the second aspect of the present disclosure, a energy storage device is provided, which may include a plurality of energy storage cabinets 100, and the plurality of energy storage cabinets 100 can be connected in series and / or in parallel.

[0098] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0099] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any appropriate manner. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.

[0100] Furthermore, any combination can be made among various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. An energy storage cabinet, characterized in that: include: A cabinet body, wherein at least one accommodating space is provided in the cabinet body, and the accommodating space is suitable for accommodating a battery module; a pipeline structure installed in the cabinet, the pipeline structure comprising a first liquid outlet pipe and an exhaust pipe, one end of the exhaust pipe is suitable for communicating with the interior of the battery module, and the other end of the exhaust pipe is connected to the first liquid outlet pipe; The first liquid outlet pipe is in communication with the interior of the battery module; and The first exhaust valve is disposed on the first liquid outlet pipe and is communicated with the interior of the first liquid outlet pipe.

2. The energy storage cabinet according to claim 1, characterized in that: The energy storage cabinet further includes a second liquid outlet pipe, a liquid inlet end of the second liquid outlet pipe is adapted to be in communication with the interior of the battery module, and a liquid outlet end of the second liquid outlet pipe is in communication with the first liquid outlet pipe.

3. The energy storage cabinet according to claim 1, characterized in that: The pipeline structure also includes a first liquid inlet pipe and a second liquid inlet pipe; The liquid inlet end of the second liquid inlet pipe is connected to the first liquid inlet pipe, and the liquid outlet end of the second liquid inlet pipe is suitable for being connected to the interior of the battery module.

4. The energy storage cabinet according to claim 1, characterized in that: The exhaust pipe is provided with a one-way valve, and the one-way valve allows gas from the battery module to pass through.

5. The energy storage cabinet according to claim 1, characterized in that: There are multiple accommodating spaces, which are arranged along the height direction of the energy storage cabinet. The first liquid outlet pipe is arranged along the height direction of the energy storage cabinet, and the first exhaust valve is arranged at the upper end of the first liquid outlet pipe.

6. The energy storage cabinet according to claim 3, characterized in that: There are multiple accommodating spaces, and the multiple accommodating spaces are arranged along the height direction of the energy storage cabinet. The first liquid inlet pipe is arranged along the height direction of the energy storage cabinet, and the liquid inlet of the first liquid inlet pipe is located at the lower end or the upper end of the first liquid inlet pipe.

7. The energy storage cabinet according to claim 3, characterized in that: The energy storage cabinet further includes a second exhaust valve, which is disposed at the upper end of the first liquid inlet pipe.

8. The energy storage cabinet according to claim 3, characterized in that: The first liquid inlet pipe and the first liquid outlet pipe are located on the same side of the energy storage cabinet.

9. The energy storage cabinet according to any one of claims 1 to 8, characterized in that: The cabinet comprises a shell and at least one supporting frame connected to the shell; The accommodating space is defined between the supporting frame and the corresponding portion of the housing.

10. The energy storage cabinet according to claim 9, characterized in that: The support frame includes an annular outer frame and an intermediate beam located in the annular outer frame; The middle beam is provided with a channel suitable for allowing the exhaust structure of the battery module to pass through.

11. The energy storage cabinet according to any one of claims 1 to 8, characterized in that: The energy storage cabinet further includes at least one battery module, which is accommodated in a corresponding accommodation space, and one end of the exhaust pipe is in communication with the interior of the battery module.

12. The energy storage cabinet according to claim 11, characterized in that: The battery cells inside the battery module are suitable for direct contact with the coolant inside the battery module and are immersed or sprayed with the coolant.

13. The energy storage cabinet according to claim 11, characterized in that: The pipeline structure further includes a second liquid outlet pipe and a second liquid inlet pipe, wherein the liquid inlet end of the second liquid outlet pipe is adapted to communicate with the interior of the battery module, and the liquid outlet end of the second liquid inlet pipe is adapted to communicate with the interior of the corresponding battery module; The liquid outlet end of the second liquid inlet pipe is connected to the first side of the battery module, and the liquid inlet end of the second liquid outlet pipe is connected to the second side of the battery module. The second side and the first side are opposite sides of the battery module.

14. The energy storage cabinet according to claim 11, characterized in that: The top cover of the battery module is provided with an exhaust port, and the exhaust pipe is connected to the exhaust port.

15. The energy storage cabinet according to claim 14, characterized in that: The top cover is provided with an exhaust structure, the exhaust structure comprises a body, an exhaust cavity is provided inside the body, and the lowest position of the exhaust cavity is higher than the lower surface of the top cover; The exhaust cavity is communicated with the interior of the battery module through the exhaust port, and the exhaust pipe is communicated with the exhaust cavity.

16. The energy storage cabinet according to claim 15, characterized in that: The exhaust structure further comprises a joint, which is connected to the body and communicates with the exhaust cavity, and is used to be connected to the exhaust pipe.

17. The energy storage cabinet according to any one of claims 1 to 8, characterized in that: The highest liquid level of the first liquid outlet pipe is higher than the highest liquid level inside the battery module located at the highest position among the plurality of battery modules.

18. An energy storage device, characterized in that: It comprises a plurality of energy storage cabinets according to any one of claims 1-17.

Images