Energy storage cabinet

Abstract

The invention discloses an energy storage cabinet. The energy storage cabinet comprises a cabinet body, a battery assembly and a control assembly. A closed space is arranged in the cabinet body. The battery assembly is installed in the closed space, a first gap exists between the battery assembly and the inner wall face of the closed space, and a heat absorption assembly is arranged on the battery assembly and at least used for absorbing heat generated by the battery assembly to reduce the temperature of the first gap. The control assembly is installed in the closed space, a second gap exists between the control assembly and the inner wall face of the closed space, and the first gap communicates with the second gap. The control assembly comprises a shell, the shell is provided with a wind power driving mechanism and a first through hole, the first through hole communicates with the second gap and the interior of the shell, and the wind power driving mechanism drives air in the first gap to flow into the shell. The problem that the heat dissipation effect of the control module in the energy storage cabinet in the prior art is poor is solved.

Description

Technical Field

[0001] The present application relates to the technical field of power storage and power supply equipment, and in particular to an energy storage cabinet. Background Art

[0002] As a common energy storage device, an energy storage cabinet usually has battery modules and control modules installed in the cabinet. The battery modules will generate a lot of heat when storing and releasing electric energy. In order to ensure that the battery modules, control modules and other electrical equipment in the energy storage cabinet can operate normally and efficiently, the heat in the energy storage cabinet needs to be dissipated. In the prior art, a heat dissipation device is usually installed in the cabinet. The heat dissipation device absorbs the heat generated by the battery module or drives the hot air in the cabinet to exchange heat with the cold air outside the cabinet to ensure that the temperature of the energy storage cabinet remains within a normal range. However, this heat dissipation method has a poor heat dissipation effect on the control module in the cabinet, resulting in a large safety hazard in the energy storage cabinet. Summary of the invention

[0003] The main purpose of the present application is to provide an energy storage cabinet to solve the problem of poor heat dissipation effect of the control module in the energy storage cabinet mentioned in the background technology.

[0004] According to one aspect of the present application, there is provided an energy storage cabinet, comprising:

[0005] A cabinet body, wherein a closed space is arranged inside the cabinet body;

[0006] A battery assembly, wherein the battery assembly is installed in the enclosed space, a first gap exists between the battery assembly and an inner wall surface of the enclosed space, and a heat absorbing assembly is provided on the battery assembly, and the heat absorbing assembly is at least used to absorb heat generated by the battery assembly to reduce the temperature of the first gap;

[0007] A control component, wherein the control component is installed in the enclosed space, a second gap exists between the control component and an inner wall surface of the enclosed space, and the first gap and the second gap are communicated with each other;

[0008] Wherein, the control component includes a shell, and a wind drive mechanism and a first through hole are provided on the shell. The first through hole connects the second gap with the interior of the shell, and the wind drive mechanism drives the air in the first gap to flow into the shell.

[0009] Further, the control assembly includes a control box, the control box includes the shell, a mounting cavity is provided in the shell, the first through hole is penetrated through the shell, and the first through hole connects the mounting cavity and the second gap.

[0010] Furthermore, the first through holes include a plurality of first through holes, which are arranged in sequence on the side wall of the shell along the height direction of the cabinet and arranged in multiple rows; and / or, the first through holes include a plurality of first through holes, which are arranged in sequence on the side wall of the shell along the width direction of the cabinet and arranged in multiple columns.

[0011] Furthermore, a second through hole is provided on the shell, the second through hole is spaced apart from the first through hole, and the second through hole is penetrated through a side of the shell close to the second gap, and the wind driving mechanism is installed in the second through hole.

[0012] Furthermore, the wind-driven mechanism comprises:

[0013] a fan, wherein the fan is installed in the second through hole;

[0014] A driving member, wherein the driving member is located in the installation cavity, the driving member is electrically connected to the fan and drives the fan to rotate, the air inlet end of the fan faces the installation cavity, and the air outlet end of the fan faces the second gap.

[0015] Furthermore, the cabinet includes an outer shell and a first door panel, the outer shell is provided with a first opening, the first opening is connected with the second gap, the first door panel is covered on the first opening, the first door panel has a first position avoiding the first opening and a second position sealing the first opening, and the size of the first opening is not less than the size of the outer contour of the control box.

[0016] Furthermore, a first chamber is further provided in the cabinet, the first chamber is isolated from the enclosed space, and the heat absorption component includes:

[0017] A host, the host being located in the first chamber;

[0018] A heat absorbing plate, wherein the heat absorbing plate comprises a plurality of heat absorbing plates, the battery assembly comprises a plurality of battery cell clusters, the plurality of battery cell clusters are stacked in sequence along the height direction of the cabinet, the plurality of heat absorbing plates are arranged in one-to-one correspondence with the plurality of battery cell clusters, and the bottom of each battery cell is installed with the heat absorbing plate;

[0019] The housing is provided with a second opening, the second opening is communicated with the enclosed space, the second opening is covered with a second door panel, the second door panel has a third position avoiding the second opening and a fourth position sealing the second opening;

[0020] A liquid cooling pipe is arranged in the heat absorbing plate, and a liquid inlet and a liquid outlet of the liquid cooling pipe are arranged on the same side of the heat absorbing plate along the width direction of the cabinet and face the second opening, the liquid inlet is connected to the main unit through a liquid inlet pipeline, and the liquid outlet is connected to the main unit through a liquid outlet pipeline.

[0021] Further, the liquid inlet pipeline includes a liquid inlet main pipe and a plurality of liquid inlet branch pipes, the liquid inlet main pipe is installed in the first gap and is located on one side of the battery assembly along the length direction of the cabinet, and the liquid inlet main pipe extends along the height direction of the cabinet, and the plurality of liquid inlet branch pipes are sequentially connected to the liquid inlet main pipe along the height direction of the cabinet and are communicated with the liquid inlet main pipe, the plurality of liquid inlet branch pipes are arranged one by one corresponding to the plurality of heat absorbing plates, and the end of each of the liquid inlet branch pipes away from the liquid inlet main pipe is communicated with the liquid inlet port of the heat absorbing plate;

[0022] The liquid outlet pipeline includes a liquid outlet main pipe and a plurality of liquid outlet branch pipes, the liquid outlet main pipe is installed in the first gap and is located on the other side of the battery assembly along the length direction of the cabinet, and the liquid outlet main pipe extends along the height direction of the cabinet, and a plurality of liquid outlet branch pipes are sequentially connected to the liquid outlet main pipe along the height direction of the cabinet and are communicated with the liquid outlet main pipe, the plurality of liquid outlet branch pipes are arranged one by one corresponding to the plurality of heat absorbing plates, and an end of each of the liquid outlet branch pipes away from the liquid outlet main pipe is communicated with the liquid outlet port of the heat absorbing plate.

[0023] Furthermore, a second chamber is provided in the cabinet, and the second chamber and the first chamber are arranged in sequence along the height direction of the cabinet, and the second chamber and the first chamber are both located on one side of the enclosed space along the length direction of the cabinet, and the second chamber and the first chamber are both isolated from the enclosed space, and the second chamber is at least used to install a bidirectional converter.

[0024] Furthermore, along the height direction of the cabinet, the control box is installed at the bottom of the enclosed space, and the battery assembly is installed at the top of the control box.

[0025] In the present application, the heat absorption component can effectively reduce the temperature of the first gap around the battery assembly, and the wind drive mechanism can accelerate the air flow speed inside the enclosed space, so that the cold air with a lower temperature in the first gap flows into the second gap, and then flows into the shell from the second gap through the first through hole. The wind drive mechanism can accelerate the flow of air with a lower temperature to air with a higher temperature, so that the air with a lower temperature and the air with a higher temperature are mixed with each other, which promotes natural convection and forced convection between the air with a lower temperature and the air with a higher temperature, accelerates the flow speed of the air in the enclosed space, and greatly accelerates the efficiency of convective heat transfer. In addition, the cold air flowing into the shell can effectively absorb the heat inside the shell, thereby reducing the temperature inside the shell, effectively preventing the temperature of the control component from being too high and affecting the performance of the control component, ensuring that the temperature of the control component is within the normal range, and can also effectively reduce the risk of safety hazards caused by poor heat dissipation of the control component, which is conducive to improving the safety of the energy storage cabinet.

[0026] The first gap is interconnected with the second gap, so that the first gap and the second gap form an air flow channel in the confined space. The wind drive mechanism accelerates the air flow rate in the air flow channel, making the air distribution in the confined space more uniform, thereby making the temperature distribution in the confined space more uniform, effectively preventing the occurrence of local overheating or overcooling in the confined space, ensuring that the battery components and control components in the confined space are in a suitable temperature environment, and ensuring that the battery components and control components can operate normally, efficiently and stably. The heat absorption component can also directly absorb the heat generated by the battery component, effectively preventing the battery component from overheating, resulting in problems such as reduced working performance and shortened service life of the battery component.

[0027] Among them, the battery assembly and the control assembly are both located in a confined space. During the heat dissipation process of the battery assembly and the control assembly, the air in the confined space does not contact the air outside the confined space, which effectively reduces the possibility of condensation in the confined space. At the same time, the air temperature in the confined space is relatively uniform, the first gap and the second gap are interconnected, and a wind drive mechanism actively drives the air in the confined space to circulate, which can make the air in the confined space continue to flow and mix. The flowing air can take away the condensed water vapor in time to prevent the water vapor from gathering at a certain position and reaching a saturated state and condensing into dew. The present application can effectively reduce the possibility of condensation, further ensure the safety of the battery assembly and the control assembly in the confined space, reduce the problems of equipment corrosion and insulation performance degradation caused by condensation, improve the reliability and safety of the energy storage cabinet, and help to extend the service life of the energy storage cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 A front view of the energy storage cabinet disclosed in this application;

[0030] Figure 2 A rear view of the energy storage cabinet disclosed in this application;

[0031] Figure 3 This is a schematic diagram of the structure of the energy storage cabinet disclosed in this application without showing the outer shell;

[0032] Figure 4 for Figure 3 The enlarged view of P in the middle;

[0033] Figure 5 This is a schematic diagram of the structure of the control box.

[0034] The above drawings include the following reference numerals:

[0035] 10. Cabinet; 11. Enclosed space; 13. First opening; 14. First chamber; 15. Second opening; 16. Second door panel; 17. Second chamber; 171. Bidirectional converter; 19. Shell; 191. Ventilation hole; 20. Battery assembly; 21. First gap; 22. Heat absorption assembly; 221. Host; 221a. Liquid inlet pipeline; 221a1. Liquid inlet main pipe; 221a2. Liquid inlet branch pipe; 221b. Liquid outlet pipeline; 221b1. Liquid outlet main pipe; 221b2. Liquid outlet branch pipe; 222. Heat absorption plate; 2221. Liquid inlet; 2222. Liquid outlet; 23. Battery unit; 30. Control assembly; 31. Second gap; 32. Control box; 321. Shell; 33. Wind drive mechanism; 34. First through hole. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0039] See also Figures 1 to 5 As shown, the present application provides an energy storage cabinet. The energy storage cabinet includes a cabinet body 10, a battery assembly 20 and a control assembly 30. A closed space 11 is provided in the cabinet body 10. The battery assembly 20 is installed in the closed space 11, and a first gap 21 exists between the battery assembly 20 and the inner wall surface of the closed space 11. A heat absorbing assembly 22 is provided on the battery assembly 20, and the heat absorbing assembly 22 is at least used to absorb the heat generated by the battery assembly 20 to reduce the temperature of the first gap 21. The control assembly 30 is installed in the closed space 11, and a second gap 31 exists between the control assembly 30 and the inner wall surface of the closed space 11, and the first gap 21 and the second gap 31 are connected to each other. Among them, the control assembly 30 includes a shell 321. A wind drive mechanism 33 and a first through hole 34 are provided on the shell 321. The first through hole 34 connects the second gap 31 with the inside of the shell 321, and the wind drive mechanism 33 drives the air in the first gap 21 to flow into the shell 321.

[0040] In this embodiment, the heat absorption component 22 can effectively reduce the temperature of the first gap 21 around the battery component 20, and the wind driving mechanism 33 can accelerate the air flow speed inside the enclosed space 11, so that the cold air with a lower temperature in the first gap 21 flows into the second gap 31, and then flows into the shell 321 from the second gap 31 through the first through hole 34. The wind driving mechanism 33 can accelerate the flow of air with a lower temperature to air with a higher temperature, so that the air with a lower temperature and the air with a higher temperature are mixed with each other, promote the natural convection and forced convection of the air with a lower temperature and the air with a higher temperature, accelerate the flow speed of the air in the enclosed space 11, and greatly increase the efficiency of convective heat transfer. In addition, the cold air flowing into the shell 321 can effectively absorb the heat inside the shell 321, thereby reducing the temperature inside the shell 321, effectively preventing the temperature of the control component 30 from being too high and affecting the performance of the control component 30, ensuring that the temperature of the control component 30 is within the normal range, and can also effectively reduce the risk of safety hazards caused by poor heat dissipation of the control component 30, which is conducive to improving the safety of the energy storage cabinet.

[0041] The first gap 21 and the second gap 31 are interconnected, so that the first gap 21 and the second gap 31 form an air flow channel in the enclosed space 11. The wind drive mechanism 33 accelerates the air flow rate in the air flow channel, making the air distribution in the enclosed space 11 more uniform, thereby making the temperature distribution in the enclosed space 11 more uniform, effectively preventing the occurrence of local overheating or overcooling in the enclosed space 11, ensuring that the battery assembly 20 and the control assembly 30 in the enclosed space 11 are in a suitable temperature environment, and ensuring that the battery assembly 20 and the control assembly 30 can operate normally, efficiently and stably. The heat absorption assembly 22 can also directly absorb the heat generated by the battery assembly 20, effectively preventing the battery assembly 20 from overheating, resulting in problems such as reduced working performance and shortened service life of the battery assembly 20.

[0042] Among them, the battery assembly 20 and the control assembly 30 are both located in the enclosed space 11. During the heat dissipation process of the battery assembly 20 and the control assembly 30, the air in the enclosed space 11 does not contact the air outside the enclosed space 11, which effectively reduces the possibility of condensation in the enclosed space 11. At the same time, the air temperature in the enclosed space 11 is relatively uniform, the first gap 21 and the second gap 31 are interconnected, and the wind drive mechanism 33 actively drives the air in the enclosed space 11 to circulate, which can make the air in the enclosed space 11 continue to flow and mix. The flowing air can take away the condensed water vapor in time to prevent the water vapor from gathering at a certain position and reaching a saturated state and condensing into dew. The present application can effectively reduce the possibility of condensation, further ensure the safety of the battery assembly 20 and the control assembly 30 in the enclosed space 11, reduce the problems of equipment corrosion and insulation performance degradation caused by condensation, improve the reliability and safety of the energy storage cabinet, and help to extend the service life of the energy storage cabinet.

[0043] Further, the control component 30 includes a control box 32. The control box 32 includes a shell 321. An installation cavity is arranged in the shell 321. The first through hole 34 is arranged through the shell 321, and the first through hole 34 connects the installation cavity and the second gap 31. The first through hole 34 connects the installation cavity and the second gap 31, which not only helps cold air to enter the installation cavity to reduce the temperature in the installation cavity, but also promotes the discharge of heat in the installation cavity, and promotes the air flow circulation inside the confined space 11. This embodiment can make the heat dissipation of the battery assembly 20 and the control assembly 30 more efficient, ensuring that the control assembly 30 can still maintain stability and high performance under long-term operation. The installation cavity and the second gap 31 are interconnected, which can keep the air in the installation cavity relatively flowing, and can effectively reduce the possibility of condensation in the installation cavity, and reduce the safety hazards such as equipment corrosion and insulation performance degradation caused by condensation.

[0044] An installation cavity is provided in the control box 32, which can be used to accommodate control components such as circuit breakers, contactors, relays, isolating switches, sensors, etc. The present application can effectively absorb the heat generated by each control component in the control box 32, and ensure that each control component in the control box 32 is in a suitable temperature environment.

[0045] Furthermore, the first through holes 34 include a plurality of first through holes 34. The plurality of first through holes 34 are sequentially arranged on the side wall of the housing 321 along the height direction of the cabinet 10 and arranged in a plurality of rows.

[0046] Furthermore, the plurality of first through holes 34 are arranged along the width direction of the cabinet 10 (eg Figure 2 The two members are arranged in sequence on the side walls of the housing 321 in a plurality of rows (in the direction indicated by the arrow Y in the middle).

[0047] Alternatively, the plurality of first through holes 34 are arranged on the side walls of the housing 321 along the height direction and the width direction of the cabinet 10 , respectively, and are arranged in a plurality of rows and columns.

[0048] During the operation of the energy storage cabinet, due to the rising characteristics of hot air, there are differences in the air temperature distribution at different heights. The first through holes 34 are arranged in multiple rows and columns, which can ensure that cold air is supplemented to enter the installation cavity at each height level, so as to form a relatively uniform air flow and heat exchange in the space of the entire installation cavity, avoiding local overheating or heat dissipation dead corners. Multiple first through holes 34 can all connect the installation cavity with the second gap 31, increase the channel area and number of air with lower temperature entering the installation cavity, significantly enhance the convection effect of the air, and more cold air can flow into the installation cavity more quickly, fully mix with the hot air in the installation cavity and take away the heat in the installation cavity, thereby increasing the rate of heat exchange. At the same time, since cold air can enter the installation cavity from different positions, a complex airflow path is formed in the installation cavity, so that the heat can be dissipated more comprehensively and quickly. In addition, multiple first through holes 34 provide a certain degree of redundancy, which can effectively prevent some first through holes 34 from being blocked by dust or other reasons, resulting in poor air circulation, and other first through holes 34 can still remain unobstructed, ensuring that the control box 32 is in a stable temperature environment. In this embodiment, the plurality of first through holes 34 are arranged in an orderly manner, which also facilitates the processing of the first through holes 34 .

[0049] Furthermore, a second through hole is provided on the shell 321. The second through hole is spaced apart from the first through hole 34, and the second through hole is provided through the shell 321 on one side close to the second gap 31, and a wind-driven mechanism 33 is installed in the second through hole. The second through hole provides an installation position for the wind-driven mechanism 33, ensuring that the wind-driven mechanism 33 has a certain stability and that the wind-driven mechanism 33 can operate stably. The wind-driven mechanism 33 quickly discharges the heat in the installation cavity by generating airflow, and at the same time drives the cold air in the second gap 31 to flow into the installation cavity through the first through hole 34, thereby accelerating the air flow speed in the enclosed space 11, so that the air in the enclosed space 11 forms an effective heat dissipation cycle, and ensures that the temperature in the enclosed space 11 is maintained within an appropriate range.

[0050] Furthermore, the wind-driven mechanism 33 includes a fan and a driving member. The fan is installed in the second through hole. The driving member is located in the installation cavity, the driving member is electrically connected to the fan and drives the fan to rotate, the air inlet end of the fan faces the installation cavity, and the air outlet end of the fan faces the second gap 31. During the rotation of the fan, the cold air in the first gap 21 can be accelerated to flow into the second gap 31, and then flow into the installation cavity through the first through hole 34. After the cold air flowing into the installation cavity exchanges heat with the hot air in the installation cavity, the temperature in the installation cavity drops, and the air with a higher temperature in the installation cavity is blown out to the second gap 31 under the drive of the fan. An air flow channel is formed in the confined space 11, and the air circulates in the air flow channel. The air inside the confined space 11 undergoes an orderly heat exchange cycle, which accelerates the convection of the air in the confined space 11, avoids the accumulation of hot air near the control component 30, and helps to maintain the temperature balance of the battery component 20 and the control component 30.

[0051] Furthermore, the cabinet 10 includes a shell 19 and a first door panel. A first opening 13 is provided on the shell 19. The first opening 13 is connected to the second gap 31. The first door panel is covered on the first opening 13, and the first door panel has a first position to avoid the first opening 13 and a second position to seal the first opening 13. The size of the first opening 13 is not less than the size of the outer contour of the control box 32. When the first door panel is in the first position, the first opening 13 is connected to the second gap 31, and the first opening 13 provides an inspection window for maintenance and repair personnel, so that the staff can easily access the control box 32 to carry out maintenance inspections and other work. For example, the staff can check the control line connection in the control box 32 through the first opening 13, replace the faulty components, etc. Specifically, the front of the control box 32 is provided with a display component, an operating component or a human-computer interaction component, etc., and the back of the control box 32 is provided with a line connection component, a control component, etc. When the control box 32 fails, and the line connection components, control components, etc. on the back of the control box 32 need to be repaired or replaced, the staff can repair the back of the control box 32 through the first opening 13, without having to move the control box 32 out of the cabinet 10 as a whole, which greatly improves the efficiency of maintenance and inspection work and makes it easier for the staff to perform maintenance and inspection. In addition, the size of the first opening 13 is not less than the size of the outer contour of the control box 32, and the second gap 31 between the control box 32 and the enclosed space 11 can also provide a certain operating space for the staff, making it easier for the staff to perform repair, maintenance, and inspection. When the first door panel is in the second position, the first opening 13 and the second gap 31 are sealed, so that the enclosed space 11 is isolated from the external space of the cabinet 10, preventing the air outside the cabinet 10 from exchanging heat with the air in the enclosed space 11, thereby preventing condensation from forming in the enclosed space 11.

[0052] In order to ensure that the first door panel can effectively seal the first opening 13, a sealing ring can be provided between the first door panel and the first opening 13. When the first door panel covers the first opening 13, the first door panel squeezes the sealing ring to deform the sealing ring to seal the gap between the first opening 13 and the first door panel, thereby ensuring good sealing of the enclosed space 11.

[0053] Furthermore, a first chamber 14 is also provided in the cabinet 10. The first chamber 14 is isolated from the enclosed space 11. The heat absorption component 22 includes a main unit 221 and a heat absorption plate 222. The main unit 221 is located in the first chamber 14. The heat absorption plate 222 includes a plurality of heat absorption plates 222, and the battery assembly 20 includes a plurality of battery cell clusters 23, and the plurality of battery cell clusters 23 are stacked in sequence along the height direction of the cabinet 10. The plurality of heat absorption plates 222 are arranged one by one corresponding to the plurality of battery cell clusters 23, and a heat absorption plate 222 is installed at the bottom of each battery cell 23. A partition is provided between the first chamber 14 and the enclosed space 11, so that the battery assembly 20 and the control assembly 30 are in the enclosed space 11, effectively preventing the air outside the enclosed space 11 from entering the enclosed space 11 and generating condensation, and also preventing the heat generated by the main unit 221 from entering the enclosed space 11 and increasing the temperature of the enclosed space 11. Multiple heat absorbing plates 222 are arranged in one-to-one correspondence with multiple clusters of battery cells 23, and each heat absorbing plate 222 is installed at the bottom of each battery cell 23. Each heat absorbing plate 222 can accurately absorb the heat generated by each cluster of battery cells 23. The heat absorbing plate 222 fits tightly with the battery cell 23, and the heat absorbing plate 222 can absorb the heat generated by the battery cell 23 to a greater extent, improve the heat absorption efficiency of the heat absorbing plate 222, and effectively prevent the battery cell 23 from overheating and causing performance degradation or safety hazards. The heat absorbing plate 222 can also absorb the heat in the first gap 21 near the battery cell 23, reduce the temperature of the first gap 21, ensure that the temperature of the air flowing into the installation cavity is low and can absorb the heat in the installation cavity. The structure of the heat absorbing component 22 is relatively modular, the main unit 221 is located in an independent first chamber 14, and the heat absorbing plate 222 is installed corresponding to the battery cell 23. This modular design facilitates operation when maintaining or replacing the heat absorbing component 22. If a heat absorbing plate 222 fails or needs to be cleaned, the heat absorbing plate 222 corresponding to the battery cell 23 can be processed separately without large-scale disassembly of the entire heat absorbing assembly 22. Similarly, for the maintenance or upgrade of the host 221, there is also a relatively independent operation space in the first chamber 14, which reduces the difficulty and workload of maintenance. When the temperature control of a cluster of battery cells 23 is found to be abnormal, the corresponding heat absorbing plate 222 can be quickly located and inspected or replaced without affecting the normal operation of other battery cells 23 and heat absorbing plates 222.

[0054] The housing 19 is provided with a second opening 15 , which is in communication with the enclosed space 11 . The second opening 15 is covered with a second door panel 16 , which has a third position for avoiding the second opening 15 and a fourth position for sealing the second opening 15 .

[0055] A liquid cooling pipe is provided in the heat absorbing plate 222. The liquid inlet 2221 and the liquid outlet 2222 of the liquid cooling pipe are both provided on the same side of the heat absorbing plate 222 along the width direction of the cabinet 10 and facing the second opening 15. The liquid inlet 2221 is connected to the host 221 through the liquid inlet pipe 221a, and the liquid outlet 2222 is connected to the host 221 through the liquid outlet pipe 221b. The host 221 drives the coolant with a lower temperature to flow through the liquid inlet pipe 221a and into the liquid cooling pipe through the liquid inlet 2221. After the coolant with a lower temperature absorbs the heat generated by the battery unit 23, it flows along the liquid cooling pipe to the liquid outlet 2222 and then enters the liquid outlet pipe 221b, and then flows along the liquid outlet pipe 221b to the host 221. The host 221 cools the coolant flowing out of the liquid outlet pipe 221b and then transports it to the liquid inlet pipe 221a again, so as to realize the refrigeration cycle of the liquid in the heat absorbing component 22.

[0056] The second opening 15 and the first opening 13 are respectively located at opposite sides of the cabinet 10 in the width direction, and the second opening 15 is at least mutually connected with the first gap 21. The second opening 15 is arranged on the front side of the cabinet 10, and the liquid inlet 2221 and the liquid outlet 2222 of the liquid cooling pipe face the second opening 15, so that the arrangement facilitates the connection operation between the liquid inlet 2221 of the liquid cooling pipe and the liquid inlet pipeline 221a, and between the liquid outlet 2222 and the liquid outlet pipeline 221b. The liquid inlet 2221 and the liquid outlet 2222 of the liquid cooling pipe are both arranged on the same side of the heat absorbing plate 222 along the width direction of the cabinet 10 and facing the second opening 15. This arrangement can also save the installation space on both sides of the heat absorbing plate 222 along the width direction of the cabinet 10, and can reduce the size of the first gap 21 located at the battery assembly 20 along the width direction of the cabinet 10, thereby reducing the size of the enclosed space 11, improving the compactness between the enclosed space 11 inside the cabinet 10 and the first chamber 14, which is conducive to reducing the volume of the energy storage cabinet.

[0057] When the second door panel is in the third position, the second opening 15 is connected to the enclosed space 11, and the staff can install the battery unit 23, the heat absorbing plate 222, the liquid inlet pipeline 221a and the liquid outlet pipeline 221b through the second opening 15. The liquid inlet 2221 and the liquid outlet 2222 face the second opening 15, which is convenient for the operator to connect the liquid inlet 2221 with the liquid inlet pipeline 221a and the liquid outlet 2222 with the liquid outlet pipeline 221b. This arrangement increases the operating space of the staff, makes it easier to install the heat absorbing assembly 22, and also facilitates the maintenance, inspection and replacement of the battery unit 23, the heat absorbing plate 222, the liquid inlet pipeline 221a and the liquid outlet pipeline 221b.

[0058] Furthermore, the liquid inlet pipeline 221a includes a liquid inlet main pipe 221a1 and a plurality of liquid inlet branch pipes 221a2. The liquid inlet main pipe 221a1 is installed in the first gap 21 and is located at the length direction of the battery assembly 20 along the cabinet 10 (such as Figure 2 The liquid inlet main pipe 221a1 is arranged along the height direction of the cabinet 10 (as indicated by the arrow X in the figure). Figure 2 The plurality of liquid inlet branch pipes 221a2 are sequentially connected to the liquid inlet main pipe 221a1 along the height direction of the cabinet 10 and are interconnected with the liquid inlet main pipe 221a1. The plurality of liquid inlet branch pipes 221a2 are arranged in one-to-one correspondence with the plurality of heat absorbing plates 222, and one end of each liquid inlet branch pipe 221a2 away from the liquid inlet main pipe 221a1 is communicated with the liquid inlet port 2221 of the heat absorbing plate 222.

[0059] Multiple liquid inlet pipes 221a2 are arranged in one-to-one correspondence with multiple heat absorbing plates 222, which can ensure that the coolant is evenly distributed between the heat absorbing plates 222 at different heights. The heat generated by the battery cells 23 corresponding to each heat absorbing plate 222 can be absorbed by the heat absorbing plate 222 in a timely manner, effectively ensuring the consistency and stability of the temperature of each battery cell 23, and ensuring that the temperature of the enclosed space 11 is more uniform.

[0060] The liquid outlet pipeline 221b includes a liquid outlet main pipe 221b1 and a plurality of liquid outlet branch pipes 221b2. The liquid outlet main pipe 221b1 is installed in the first gap 21 and is located on the other side of the battery assembly 20 along the length direction of the cabinet 10, and the liquid outlet main pipe 221b1 extends along the height direction of the cabinet 10, and the plurality of liquid outlet branch pipes 221b2 are sequentially connected to the liquid outlet main pipe 221b1 along the height direction of the cabinet 10 and communicate with the liquid outlet main pipe 221b1, and the plurality of liquid outlet branch pipes 221b2 are arranged one by one corresponding to the plurality of heat absorbing plates 222, and the end of each liquid outlet branch pipe 221b2 away from the liquid outlet main pipe 221b1 is communicated with the liquid outlet 2222 of the heat absorbing plate 222. The liquid outlet main pipe 221b1 and the liquid outlet branch pipe 221b2 help to evenly collect the coolant that has absorbed heat and flows out from the heat absorbing plate 222. Each liquid outlet branch pipe 221b2 can efficiently gather the coolant in the heat absorbing plate 222 to the liquid outlet main pipe 221b1, making the circulation of the coolant smoother and more orderly, further improving the efficiency and reliability of the heat exchange system. The liquid inlet main pipe 221a1 and the liquid outlet main pipe 221b1 are respectively installed on both sides of the battery assembly 20 along the length direction of the cabinet 10 and are located in the first gap 21, making full use of the space between the battery assembly 20 and the inner wall of the enclosed space 11, avoiding the liquid inlet main pipe 221a1 and the liquid outlet main pipe 221b1 from occupying additional space in the energy storage cabinet, making the layout inside the energy storage cabinet more compact and reasonable. In addition, multiple liquid inlet branch pipes 221a2, multiple heat absorbing plates 222 and multiple liquid outlet branch pipes 221b2 are all arranged one by one, which is more convenient for staff to perform management work. When the temperature of a battery cell 23 is abnormal, the staff can quickly find the corresponding liquid inlet branch 221a2, heat absorbing plate 222 and liquid outlet branch 221b2 of the battery cell 23 for maintenance. By checking the corresponding liquid inlet branch 221a2 and liquid outlet branch 221b2, the fault location can be quickly determined, which improves the efficiency and accuracy of fault detection.

[0061] Among them, quick connectors are installed between the liquid inlet branch pipe 221a2 and the liquid inlet 2221, and between the liquid outlet branch pipe 221b2 and the liquid outlet 2222. The quick connectors can quickly connect or disconnect the liquid inlet branch pipe 221a2 and the liquid inlet 2221, and the liquid outlet branch pipe 221b2 and the liquid outlet 2222. The staff only needs to perform simple plugging and unplugging operations to complete the connection or disconnection operation, which greatly improves the installation efficiency of the heat absorption component 22.

[0062] Furthermore, along the height direction of the cabinet 10, the control box 32 is installed at the bottom of the enclosed space 11, and the battery assembly 20 is installed at the top of the control box 32. Since cold air has the characteristic of descending, the battery assembly 20 is installed on the top of the control box 32, and the cold air in the first gap 21 will diffuse into the second gap 31. The hot air emitted from the installation cavity to the second gap 31 will rise into the first gap 21, reducing the accumulation of heat around the control box 32, and can reduce the temperature of the control assembly 30. This arrangement can also accelerate the convection phenomenon between cold air and hot air, making the temperature distribution in the enclosed space 11 more uniform.

[0063] like Figures 1 to 3 As shown, further, a second chamber 17 is also provided in the cabinet 10. The second chamber 17 and the first chamber 14 are arranged in sequence along the height direction of the cabinet 10, and the second chamber 17 and the first chamber 14 are both located on one side of the enclosed space 11 along the length direction of the cabinet 10, and the second chamber 17 and the first chamber 14 are both isolated from the enclosed space 11, and the second chamber 17 is at least used to install a bidirectional converter 171. The second chamber 17 and the first chamber 14 are both located on one side of the enclosed space 11 along the length direction of the cabinet 10, and the second chamber 17 and the first chamber 14 are arranged in sequence along the height direction of the cabinet 10. This layout makes full use of the space of the cabinet 10, so that the host 221 of the heat absorption component 22 and the bidirectional converter 171 can be compactly and orderly placed in the energy storage cabinet, avoiding space waste and improving the utilization rate of the internal space of the cabinet 10.

[0064] The bidirectional converter 171 plays a key role in energy conversion in the energy storage system. During the energy storage process, the bidirectional converter 171 can convert the external input AC power into DC power so as to charge the battery assembly 20 and realize the storage of electric energy. For example, when the energy storage cabinet is connected to the power grid, the AC power provided by the power grid is rectified by the bidirectional converter 171 to convert the AC power into DC power suitable for the battery assembly 20. In the discharge stage, the bidirectional converter 171 can convert the DC power output by the battery assembly 20 into AC power. The energy storage cabinet can feed back the stored electric energy to the power grid in the form of AC power or supply power to the AC load. The bidirectional converter 171 can also adjust the output power of the energy storage cabinet. The bidirectional converter 171 can also adjust the charging or discharging power of the energy storage cabinet according to the changes in parameters such as the frequency and voltage of the power grid, so as to ensure that the use of the energy storage cabinet is more flexible and convenient.

[0065] Among them, the battery assembly 20 and the control assembly 30 are both located in the enclosed space 11, and the connection lines between the battery assembly 20 and the control assembly 30 can be directly connected, and the wiring operation between the battery assembly 20 and the control assembly 30 is more convenient.

[0066] The control box 32 is provided with a wiring terminal, a circuit breaker and a power converter. The wiring terminal is electrically connected to an external power grid or a power load. The circuit breaker is electrically connected to the wiring terminal. The power converter is electrically connected between the circuit breaker and the controller. The wiring terminal is used to transmit external electrical energy to the power converter. The circuit breaker is an important electrical device for the protection and operation of the circuit, which is used to distribute electrical energy and protect the circuit.

[0067] The housing 19 is also provided with honeycomb-shaped ventilation holes 191, which are located on the side wall of the first chamber 14 and connect the first chamber 14 with the outside of the cabinet 10, and the heat generated by the host 221 can be dissipated through the ventilation holes 191. The side wall of the second chamber 17 is also provided with ventilation holes 191, which connect the second chamber 17 with the outside of the cabinet 10, and the heat generated by the bidirectional converter 171 can also be dissipated through the ventilation holes 191.

[0068] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0069] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0070] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy storage cabinet, characterized in that: include: A cabinet (10), wherein a closed space (11) is provided in the cabinet (10); A battery assembly (20), the battery assembly (20) being installed in the enclosed space (11), a first gap (21) being present between the battery assembly (20) and an inner wall surface of the enclosed space (11), a heat absorbing assembly (22) being provided on the battery assembly (20), the heat absorbing assembly (22) being at least used to absorb heat generated by the battery assembly (20) to reduce the temperature of the first gap (21); a control component (30), the control component (30) being installed in the enclosed space (11), a second gap (31) being present between the control component (30) and an inner wall surface of the enclosed space (11), and the first gap (21) and the second gap (31) being communicated with each other; The control component (30) comprises a shell (321), and the shell (321) is provided with a wind driving mechanism (33) and a first through hole (34), the first through hole (34) connects the second gap (31) with the interior of the shell (321), and the wind driving mechanism (33) drives the air in the first gap (21) to flow into the shell (321).

2. The energy storage cabinet according to claim 1, characterized in that: The control assembly (30) comprises a control box (32), the control box (32) comprises the shell (321), a mounting cavity is arranged in the shell (321), the first through hole (34) is arranged through the shell (321), and the first through hole (34) connects the mounting cavity and the second gap (31).

3. The energy storage cabinet according to claim 2, characterized in that: The first through holes (34) include a plurality of first through holes (34), which are sequentially arranged on the side wall of the shell (321) along the height direction of the cabinet (10) and arranged in a plurality of rows; and / or, the first through holes (34) are sequentially arranged on the side wall of the shell (321) along the width direction of the cabinet (10) and arranged in a plurality of columns.

4. The energy storage cabinet according to claim 2, characterized in that: The shell (321) is provided with a second through hole, the second through hole is spaced apart from the first through hole (34), and the second through hole is arranged through a side of the shell (321) close to the second gap (31), and the wind driving mechanism (33) is installed in the second through hole.

5. The energy storage cabinet according to claim 4, characterized in that: The wind driving mechanism (33) comprises: a fan, wherein the fan is installed in the second through hole; A driving member is located in the installation cavity, the driving member is electrically connected to the fan and drives the fan to rotate, the air inlet end of the fan faces the installation cavity, and the air outlet end of the fan faces the second gap (31).

6. The energy storage cabinet according to claim 2, characterized in that: The cabinet (10) comprises an outer shell (19) and a first door panel, the outer shell (19) is provided with a first opening (13), the first opening (13) is communicated with the second gap (31), the first door panel is arranged to cover the first opening (13), the first door panel has a first position avoiding the first opening (13) and a second position sealing the first opening (13), and the size of the first opening (13) is not less than the size of the outer contour of the control box (32).

7. The energy storage cabinet according to claim 6, characterized in that: The cabinet (10) is further provided with a first chamber (14), the first chamber (14) being isolated from the enclosed space (11), and the heat absorption component (22) comprising: A host (221), wherein the host (221) is located in the first chamber (14); a heat absorbing plate (222), the heat absorbing plate (222) comprising a plurality of them, the battery assembly (20) comprising a plurality of battery cell clusters (23), the plurality of battery cell clusters (23) being stacked in sequence along the height direction of the cabinet (10), the plurality of heat absorbing plates (222) being arranged in one-to-one correspondence with the plurality of battery cell clusters (23), and the bottom of each battery cell (23) being installed with the heat absorbing plate (222); The housing (19) is provided with a second opening (15), the second opening (15) being in communication with the enclosed space (11), the second opening (15) being covered with a second door panel (16), the second door panel (16) having a third position for avoiding the second opening (15) and a fourth position for sealing the second opening (15); A liquid cooling pipe is arranged in the heat absorbing plate (222); a liquid inlet (2221) and a liquid outlet (2222) of the liquid cooling pipe are both arranged on the same side of the heat absorbing plate (222) along the width direction of the cabinet (10) and facing the second opening (15); the liquid inlet (2221) is connected to the main unit (221) via a liquid inlet pipeline (221a); ​​and the liquid outlet (2222) is connected to the main unit (221) via a liquid outlet pipeline (221b).

8. The energy storage cabinet according to claim 7, characterized in that: The liquid inlet pipeline (221a) comprises a liquid inlet main pipe (221a1) and a plurality of liquid inlet branch pipes (221a2); the liquid inlet main pipe (221a1) is installed in the first gap (21) and is located on one side of the battery assembly (20) along the length direction of the cabinet (10); the liquid inlet main pipe (221a1) extends along the height direction of the cabinet (10); the plurality of liquid inlet branch pipes (221a2) are sequentially connected to the liquid inlet main pipe (221a1) along the height direction of the cabinet (10) and are in communication with the liquid inlet main pipe (221a1); the plurality of liquid inlet branch pipes (221a2) are arranged in one-to-one correspondence with the plurality of heat absorbing plates (222); and one end of each of the liquid inlet branch pipes (221a2) which is away from the liquid inlet main pipe (221a1) is in communication with the liquid inlet port (2221) of the heat absorbing plate (222); The liquid outlet pipeline (221b) comprises a liquid outlet main pipe (221b1) and a plurality of liquid outlet branch pipes (221b2); the liquid outlet main pipe (221b1) is installed in the first gap (21) and is located on the other side of the battery assembly (20) along the length direction of the cabinet (10); the liquid outlet main pipe (221b1) extends along the height direction of the cabinet (10); the plurality of liquid outlet branch pipes (221b2) are sequentially connected to the liquid outlet main pipe (221b1) along the height direction of the cabinet (10) and are in communication with the liquid outlet main pipe (221b1); the plurality of liquid outlet branch pipes (221b2) are arranged in one-to-one correspondence with the plurality of heat absorbing plates (222); and one end of each of the liquid outlet branch pipes (221b2) facing away from the liquid outlet main pipe (221b1) is in communication with the liquid outlet port (2222) of the heat absorbing plate (222).

9. The energy storage cabinet according to claim 7, characterized in that: The cabinet (10) is further provided with a second chamber (17), the second chamber (17) and the first chamber (14) are arranged in sequence along the height direction of the cabinet (10), and the second chamber (17) and the first chamber (14) are both located on one side of the enclosed space (11) along the length direction of the cabinet (10), the second chamber (17) and the first chamber (14) are both isolated from the enclosed space (11), and the second chamber (17) is at least used for installing a bidirectional converter (171).

10. The energy storage cabinet according to claim 2, characterized in that: Along the height direction of the cabinet (10), the control box (32) is installed at the bottom of the enclosed space (11), and the battery assembly (20) is installed at the top of the control box (32).

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