Liquid-cooled energy storage cabinet

Abstract

The utility model discloses a liquid-cooled energy storage cabinet, comprising a cabinet body, a cabinet door hinged on the cabinet body, a liquid-cooled electric box, a liquid-cooled unit and a pipeline, wherein the liquid-cooled electric box and the pipeline are both arranged in the cabinet body, the liquid-cooled unit is arranged on a side of the cabinet door close to the cabinet body, and the pipeline is connected to the liquid-cooled electric box and the liquid-cooled unit respectively. The liquid-cooled unit of the liquid-cooled energy storage cabinet provided by the utility model occupies a small space, and has a higher internal space utilization rate and structural integration.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, in particular to a liquid-cooled energy storage cabinet. Background Art

[0002] With the development of battery technology, in order to meet the growth of electricity demand and the need to smooth out the peaks and troughs of electricity consumption, the application scenarios of energy storage cabinets are gradually increasing. Different from large container-type energy storage cabinets, the application scenarios of small energy storage cabinets are more flexible. In view of the development and application of existing energy storage systems, the space utilization and system integration requirements of energy storage cabinets are getting higher and higher. However, the inventors have found that the liquid cooling unit of the existing energy storage cabinet requires an additional storage compartment for assembly, which results in a large space occupied by the liquid cooling unit and a large volume of the liquid-cooled energy storage cabinet, which cannot meet the development needs of miniaturization of the energy storage cabinet. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a liquid-cooled energy storage cabinet to solve the problem that the liquid cooling unit of the existing energy storage cabinet occupies a large space.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a liquid-cooled energy storage cabinet, comprising a cabinet body, a cabinet door hinged on the cabinet body, a liquid-cooled electric box, a liquid cooling unit and a pipeline, the liquid-cooled electric box and the pipeline are both arranged in the cabinet body, the liquid cooling unit is arranged on a side of the cabinet door close to the cabinet body, and the pipeline is respectively connected to the liquid-cooled electric box and the liquid cooling unit.

[0005] Furthermore, it also includes a travel switch, which is arranged on the cabinet body, and a push block is arranged on the cabinet door corresponding to the travel switch.

[0006] Furthermore, a first water cooling interface is provided on a side of the liquid-cooled electric box close to the cabinet door, and a second water cooling interface is provided on the liquid cooling unit, and the pipeline is connected to the first water cooling interface and the second water cooling interface respectively.

[0007] Furthermore, it comprises a plurality of the liquid-cooled electric boxes, and the plurality of the liquid-cooled electric boxes are arranged in sequence along the height direction of the cabinet.

[0008] Furthermore, it also includes thermal insulation cotton, which is arranged on the inner wall of the cabinet.

[0009] Furthermore, the cabinet door is provided with heat dissipation holes corresponding to the liquid cooling unit.

[0010] Furthermore, the cabinet is provided with a first cabin and a second cabin in sequence from bottom to top along its height direction, and the liquid-cooled electric box is arranged in the second cabin.

[0011] Furthermore, the cabinet door includes a first door panel arranged corresponding to the first cabin body and a second door panel arranged corresponding to the second cabin body, and the liquid cooling unit is arranged on the second door panel.

[0012] Furthermore, a first shutter is provided on the first door panel, and a detachable sealing plate is provided on a side of the first cabin away from the first door panel, and a second shutter is provided on the sealing plate.

[0013] Furthermore, it also includes an energy storage inverter, which is arranged in the first cabin, and a heat dissipation duct is provided on a side of the energy storage inverter close to the second door panel, and the heat dissipation duct is arranged opposite to the second shutter.

[0014] The beneficial effects of the present invention are as follows: the liquid cooling unit of the liquid-cooled energy storage cabinet provided by the present invention is arranged on the cabinet door in a wall-mounted manner, so that the liquid cooling unit occupies a small space, and the liquid cooling unit in the present invention is connected to the liquid-cooled electric box through a pipeline, and the liquid cooling unit directly controls the temperature of the liquid-cooled electric box. The temperature control stability of the liquid-cooled electric box of the liquid-cooled energy storage cabinet is higher, and the distance between the liquid cooling unit and the liquid-cooled electric box of the liquid-cooled energy storage cabinet is shorter. Therefore, the liquid-cooled energy storage cabinet is easier to arrange pipelines, and the pipelines occupy less space in the cabinet body, so that the internal space utilization and structural integration of the liquid-cooled energy storage cabinet provided by the utility model are higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the liquid-cooled energy storage cabinet of the utility model in one embodiment at one viewing angle;

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of the liquid-cooled energy storage cabinet with the cabinet door open;

[0017] Figure 3 for Figure 2 A magnified view of the structure of part A;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure of the liquid-cooled energy storage cabinet shown in another perspective;

[0019] Figure 5 for Figure 4 The structure diagram of the liquid-cooled energy storage cabinet shown in FIG. 1 is a schematic diagram of the structure of the liquid-cooled energy storage cabinet with the sealing plate hidden;

[0020] Figure 6 A circuit schematic diagram of an energy storage system of a liquid-cooled energy storage cabinet according to the utility model in one embodiment;

[0021] Figure 7This is a circuit schematic diagram of the liquid-cooled energy storage cabinet described in the utility model in one embodiment.

[0022] Description of labels:

[0023] 1. Cabinet; 11. First cabin; 12. Second cabin; 13. Closing plate; 14. Second shutter; 15. Explosion venting slot; 16. Lightning protection assembly;

[0024] 2. Cabinet door; 21. Push block; 22. First door panel; 23. Second door panel; 24. First louver; 25. Heat dissipation hole;

[0025] 3. Liquid cooling electric box; 31. First water cooling interface;

[0026] 4. Liquid cooling unit; 41. Second water cooling interface;

[0027] 5. Travel switch;

[0028] 6. Energy storage converter; 61. Cooling duct;

[0029] 7. AC controller;

[0030] 8. Main control box;

[0031] 9. Fire fighting equipment;

[0032] 10. Water immersion detector. DETAILED DESCRIPTION

[0033] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0034] Please refer to Figures 1 to 7 A liquid-cooled energy storage cabinet comprises a cabinet body 1, a cabinet door 2 hinged on the cabinet body 1, a liquid-cooled electric box 3, a liquid cooling unit 4 and a pipeline, wherein the liquid-cooled electric box 3 and the pipeline are both arranged in the cabinet body 1, the liquid cooling unit 4 is arranged on a side of the cabinet door 2 close to the cabinet body 1, and the pipeline is connected to the liquid-cooled electric box 3 and the liquid cooling unit 4 respectively.

[0035] From the above description, it can be seen that the beneficial effect of the utility model is that the liquid cooling unit 4 of the liquid-cooled energy storage cabinet provided by the utility model is arranged on the cabinet door 2 in a wall-mounted manner, so that the liquid cooling unit 4 occupies a small space, and the liquid cooling unit 4 in the utility model is connected to the liquid-cooled electric box 3 through a pipeline, and the liquid cooling unit 4 directly controls the temperature of the liquid-cooled electric box 3. The temperature control stability of the liquid-cooled electric box 3 of the liquid-cooled energy storage cabinet is higher, and the distance between the liquid cooling unit 4 and the liquid-cooled electric box 3 of the liquid-cooled energy storage cabinet is shorter. Therefore, the liquid-cooled energy storage cabinet is easier to arrange pipelines, and the pipelines occupy less space in the cabinet body 1, so that the internal space utilization and structural integration of the liquid-cooled energy storage cabinet provided by the utility model are higher.

[0036] Furthermore, it also includes a travel switch 5 , which is arranged on the cabinet body 1 , and a push block 21 is arranged on the cabinet door 2 corresponding to the travel switch 5 .

[0037] As can be seen from the above description, the travel switch 5 is used to monitor the opening and closing state of the cabinet door 2, so as to ensure the safety performance and reliability of the liquid-cooled energy storage cabinet.

[0038] Furthermore, the liquid-cooled electric box 3 is provided with a first water-cooling interface 31 on a side close to the cabinet door 2, the liquid cooling unit 4 is provided with a second water-cooling interface 41, and the pipeline is connected to the first water-cooling interface 31 and the second water-cooling interface 41 respectively.

[0039] From the above description, it can be seen that the first water cooling interface 31 of the liquid-cooled electric box 3 is arranged on a side close to the cabinet door 2, which can facilitate the operator to connect the pipeline, and the distance between the first water cooling interface 31 and the second water cooling interface 41 can be short, which can shorten the length of the pipeline without reducing the space for arranging the pipeline, thereby making the internal space utilization rate of the liquid-cooled energy storage cabinet higher.

[0040] Furthermore, it comprises a plurality of the liquid-cooled electric boxes 3 , and the plurality of the liquid-cooled electric boxes 3 are arranged in sequence along the height direction of the cabinet 1 .

[0041] It can be seen from the above description that by providing a plurality of smaller liquid-cooled electric boxes 3 for energy storage, the temperature control reliability of a single liquid-cooled electric box 3 can be ensured.

[0042] Furthermore, it also includes thermal insulation cotton, which is arranged on the inner wall of the cabinet 1.

[0043] It can be seen from the above description that the thermal insulation cotton can provide a relatively constant temperature space environment for the cabinet 1 to ensure the stability and reliability of the operation of the energy storage cabinet.

[0044] Furthermore, the cabinet door 2 is provided with heat dissipation holes 25 corresponding to the liquid cooling unit 4 .

[0045] It can be seen from the above description that the heat dissipation holes 25 can improve the heat dissipation efficiency of the liquid cooling unit 4 .

[0046] Furthermore, the cabinet 1 is provided with a first cabin 11 and a second cabin 12 in sequence from bottom to top along its height direction, and the liquid-cooled electric box 3 is arranged in the second cabin 12 .

[0047] In detail, the thermal insulation cotton is arranged in the second cabin 12 so that the cabinet 1 provides a relatively constant temperature space environment for the liquid-cooled electric box 3 .

[0048] From the above description, it can be seen that the first cabin 11 can be used to arrange control equipment such as energy storage inverter 6, main control box 8, AC controller 7, etc. The liquid-cooled energy storage cabinet arranges the control equipment and the liquid-cooled electric box 3 in two cabins respectively, which is beneficial to the modular setting of the liquid-cooled energy storage cabinet and can facilitate the operator to carry out later maintenance of the liquid-cooled energy storage cabinet.

[0049] Furthermore, the cabinet door 2 includes a first door panel 22 arranged corresponding to the first cabin body 11 and a second door panel 23 arranged corresponding to the second cabin body 12 , and the liquid cooling unit 4 is arranged on the second door panel 23 .

[0050] It can be seen from the above description that the first door panel 22 is used to close the first cabin 11, and the second door panel 23 is used to close the second cabin 12, which can facilitate operators to perform subsequent maintenance on the liquid-cooled energy storage cabinet.

[0051] Furthermore, a first shutter 24 is disposed on the first door panel 22 , and a detachable sealing plate 13 is disposed on a side of the first cabin body 11 away from the first door panel 22 , and a second shutter 14 is disposed on the sealing plate 13 .

[0052] From the above description, it can be seen that the first louver 24 and the second louver 14 are respectively arranged on the opposite sides of the cabinet 1, which is beneficial to the ventilation and heat dissipation of the first cabin 11, and the sealing plate 13 is removable on the cabinet 1 to facilitate the operator to perform later maintenance on the liquid-cooled energy storage cabinet.

[0053] Furthermore, it also includes an energy storage inverter 6, which is arranged in the first cabin 11, and a heat dissipation duct 61 is provided on the side of the energy storage inverter 6 close to the second door panel 23, and the heat dissipation duct 61 is arranged opposite to the second shutter 14.

[0054] It can be seen from the above description that the energy storage inverter 6 is a high-power device. The energy storage inverter 6 arranged in the liquid-cooled energy storage cabinet of the utility model is a front-wind and rear-wind-out structure. Therefore, the heat dissipation duct 61 of the energy storage inverter 6 is arranged opposite to the second louver 14, so that the heat dissipation duct 61 of the energy storage inverter 6 can better guide the hot air out of the first cabin 11.

[0055] Embodiment 1

[0056] Please refer to Figures 1 to 7 , Embodiment 1 of the present utility model is as follows: a liquid-cooled energy storage cabinet is designed, which includes a cabinet body 1, a cabinet door 2 hinged on the cabinet body 1, a liquid-cooled electric box 3, a liquid cooling unit 4 and a pipeline (not shown in the figure), the liquid-cooled electric box 3 and the pipeline are both arranged in the cabinet body 1, the liquid cooling unit 4 is arranged on the side of the cabinet door 2 close to the cabinet body 1, and the pipeline is connected to the liquid-cooled electric box 3 and the liquid cooling unit 4 respectively; specifically, a first water-cooling interface 31 is provided on the side of the liquid-cooled electric box 3 close to the cabinet door 2, and the liquid cooling unit 4 is provided with a second water-cooling interface 41, and the pipeline is connected to the first water-cooling interface 31 and the second water-cooling interface 41 respectively.

[0057] In the liquid-cooled energy storage cabinet provided in the present embodiment, the liquid cooling unit 4 is arranged on the cabinet door 2 in the form of wall hanging, and the liquid cooling unit 4 is connected to the liquid-cooled electric box 3 through a pipeline, so that the temperature of the liquid-cooled electric box 3 is controlled by the liquid cooling unit 4; wherein, because the liquid cooling unit 4 is arranged on the cabinet door 2, it is not necessary to set up an additional liquid cooling cabin to arrange the liquid cooling unit 4, which makes the liquid-cooled energy storage cabinet easier to be miniaturized; at the same time, the distance between the liquid cooling unit 4 and the liquid-cooled electric box 3 is smaller, which can not only save the space of the pipeline connecting the liquid cooling unit 4 and the liquid-cooled electric box 3, thereby achieving the effect of improving the space utilization rate of the energy storage cabinet, but also can reduce the heat loss of the pipeline, so that the liquid-cooled energy storage cabinet has a better heat dissipation effect, thereby making the reliability and stability of the liquid-cooled energy storage cabinet higher.

[0058] Please refer to Figure 2 It can be seen that the liquid-cooled energy storage cabinet designed in this embodiment includes multiple liquid-cooled electric boxes 3, and the multiple liquid-cooled electric boxes 3 are arranged in sequence along the height direction of the cabinet body 1. In this embodiment, the liquid cooling unit 4 is connected to each liquid-cooled electric box 3 through a pipeline, thereby realizing the temperature control function of each liquid-cooled electric box 3, and the temperature control effect of each liquid-cooled electric box 3 is more stable and reliable.

[0059] Please continue to refer to Figure 2 In this embodiment, the cabinet body 1 of the liquid-cooled energy storage cabinet includes a first cabin body 11 and a second cabin body 12 arranged sequentially from bottom to top along its height direction, wherein the above-mentioned multiple liquid-cooled electric boxes 3 are arranged in the second cabin body 12, and the multiple second liquid-cooled electric boxes 3 are arranged sequentially along the height direction of the cabinet body 1.

[0060] Specifically, the liquid-cooled energy storage cabinet also includes an energy storage inverter 6, an AC controller 7, a main control box 8 and a fire-fighting device 9, all of which are arranged in the first cabin 11. In this embodiment, the liquid-cooled electric box 3 and other control devices are respectively arranged in the two cabins of the cabinet 1, and the above-mentioned energy storage inverter 6, AC controller 7, and main control box 8 are all independent cabinet modules, so that the liquid-cooled energy storage cabinet is convenient for production and installation as well as subsequent inspection and maintenance.

[0061] For details, please combine Figure 6 and Figure 7 For reference, in this embodiment, the main circuit of the energy storage electrical system of the liquid-cooled energy storage cabinet is set as follows: the AC controller 7 is used to access the external AC power, and is respectively connected to the AC port of the energy storage inverter 6 and the liquid cooling unit 4 after passing through the AC circuit breaker QF1, and the DC port of the energy storage inverter 6 is connected to the output port of the main control box 8, and the input port of the main control box 8 is connected in series with multiple liquid-cooled electrical boxes 3.

[0062] Among them, thermal insulation cotton is provided on the inner wall of the second cabin 12. By providing the thermal insulation cotton, a relatively constant temperature space environment can be provided for the liquid-cooled electric box 3 to ensure the reliability and stability of the operation of the liquid-cooled energy storage cabinet.

[0063] In this embodiment, in order to further facilitate the later maintenance operations of the liquid-cooled energy storage cabinet, as Figure 2 , Figure 4 and Figure 5 As shown, the cabinet door 2 includes a first door panel 22 corresponding to the first cabin 11 and a second door panel 23 corresponding to the second cabin 12, and the liquid cooling unit 4 is arranged on the second door panel 23. In this embodiment, a first louver 24 is also arranged on the first door panel 22, and a detachable sealing plate 13 is arranged on the side of the first cabin 11 away from the first door panel 22, and a second louver 14 is arranged on the sealing plate 13, which is conducive to ventilation and heat dissipation of the first cabin 11.

[0064] Among them, because the energy storage inverter 6 is a high-power device, in this embodiment, the energy storage inverter 6 has a front-wind and rear-wind-out structure, so the heat dissipation duct 61 of the energy storage inverter 6 is arranged opposite to the second louver 14, so that the heat dissipation duct 61 of the energy storage inverter 6 can better guide the hot air out of the first cabin 11.

[0065] The liquid-cooled energy storage cabinet provided in this embodiment can be used in outdoor scenes. The liquid-cooled energy storage cabinet also includes two travel switches 5 arranged on the cabinet body 1. The two travel switches 5 are respectively arranged corresponding to the first cabin 11 and the second cabin 12. Correspondingly, the first door panel 22 and the second door panel 23 are respectively provided with push blocks 21 arranged corresponding to the two travel switches 5, so that the liquid-cooled energy storage cabinet can monitor the opening and closing states of the two cabins through the travel switches 5, thereby ensuring the sealing between the first cabin 11 and the second cabin 12, and further ensuring the waterproof performance of the liquid-cooled energy storage cabinet in outdoor scenes. A water immersion detector 10 is provided at the bottom of the first cabin 11 and the second cabin 12 for detecting water ingress into the cabin.

[0066] In this embodiment, a lightning protection assembly 16 is installed on the side wall of the first cabin 11 to protect the main circuit of the energy storage electrical system from cumulative damage; in addition, an explosion relief groove 15 is provided on the top of the cabinet 1. When a sudden increase in air pressure due to thermal runaway occurs in the second cabin 12, the top explosion relief groove 15 can be broken first, thereby releasing the pressure and avoiding danger to surrounding personnel.

[0067] To sum up, the liquid cooling unit 4 of the liquid-cooled energy storage cabinet provided by the utility model is wall-mounted on the cabinet door 2, so that the liquid cooling unit 4 occupies a small space, and the liquid cooling unit 4 in the utility model is connected to the liquid-cooled electric box 3 through a pipeline, and the liquid cooling unit 4 directly controls the temperature of the liquid-cooled electric box 3. The temperature control stability of the liquid-cooled electric box 3 of the liquid-cooled energy storage cabinet is higher, and the distance between the liquid cooling unit 4 and the liquid-cooled electric box 3 of the liquid-cooled energy storage cabinet is shorter. Therefore, the liquid-cooled energy storage cabinet is easier to arrange pipelines, and the pipelines occupy less space in the cabinet body 1, so that the internal space utilization and structural integration of the liquid-cooled energy storage cabinet provided by the utility model are higher.

[0068] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A liquid-cooled energy storage cabinet, characterized in that: The invention comprises a cabinet body, a cabinet door hinged on the cabinet body, a liquid-cooled electric box, a liquid-cooled unit and a pipeline. The liquid-cooled electric box and the pipeline are both arranged in the cabinet body, the liquid-cooled unit is arranged on a side of the cabinet door close to the cabinet body, and the pipeline is connected to the liquid-cooled electric box and the liquid-cooled unit respectively.

2. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: It also includes a travel switch, which is arranged on the cabinet body, and a push block is arranged on the cabinet door corresponding to the travel switch.

3. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The liquid-cooled electric box is provided with a first water-cooling interface on one side close to the cabinet door, the liquid-cooling unit is provided with a second water-cooling interface, and the pipeline is connected to the first water-cooling interface and the second water-cooling interface respectively.

4. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: It comprises a plurality of the liquid-cooled electric boxes, and the plurality of the liquid-cooled electric boxes are arranged in sequence along the height direction of the cabinet.

5. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: It also includes thermal insulation cotton, which is arranged on the inner wall of the cabinet.

6. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The cabinet door is provided with heat dissipation holes corresponding to the liquid cooling unit.

7. The liquid-cooled energy storage cabinet according to claim 1, characterized in that: The cabinet is provided with a first cabin and a second cabin in sequence from bottom to top along the height direction thereof, and the liquid-cooled electric box is arranged in the second cabin.

8. The liquid-cooled energy storage cabinet according to claim 7, characterized in that: The cabinet door includes a first door panel corresponding to the first cabin body and a second door panel corresponding to the second cabin body, and the liquid cooling unit is arranged on the second door panel.

9. The liquid-cooled energy storage cabinet according to claim 8, characterized in that: The first door panel is provided with a first shutter, and a detachable sealing plate is provided on a side of the first cabin body away from the first door panel, and the sealing plate is provided with a second shutter.

10. The liquid-cooled energy storage cabinet according to claim 9, characterized in that: It also includes an energy storage inverter, which is arranged in the first cabin. A heat dissipation duct is provided on a side of the energy storage inverter close to the second door panel, and the heat dissipation duct is arranged opposite to the second shutter.

Images