Liquid cooling industrial and commercial energy storage cabinet

Abstract

The utility model discloses a liquid-cooled industrial and commercial energy storage cabinet. The liquid-cooled industrial and commercial energy storage cabinet comprises a cabinet body, a battery module, a liquid-cooled unit and an energy storage converter, a first transverse partition plate is arranged in the cabinet body and divides an inner cavity of the cabinet body into a lower installation area and an upper installation area. The battery module is mounted in the lower mounting area through a battery rack; the battery module comprises a plurality of detachable battery packs which are vertically stacked and arranged; the liquid cooling unit is mounted in the upper mounting area and is connected with the battery module through a liquid cooling pipeline to cool the battery module; and the energy storage converter is also mounted in the upper mounting area, is electrically connected with the battery pack and is used for realizing bidirectional conversion between alternating current and direct current. According to the utility model, the inner cavity of the cabinet body is divided into the lower mounting area and the upper mounting area, the battery module is mounted in the lower mounting area, and the liquid cooling unit and the energy storage converter are placed in the upper mounting area, so that the problem of redundant space at the rear part of the cabinet body caused by the traditional left-right parallel layout can be avoided, components in the cabinet body are arranged more compactly, and the occupied area of the cabinet body is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of energy storage, especially relates to a liquid cooling commercial and industrial energy storage cabinet. BACKGROUND

[0002] At present, as the core equipment of the energy storage system, the liquid cooling energy storage cabinet is widely used in renewable energy grid connection, power peak shaving and commercial and industrial energy storage scenes due to its high efficient temperature control ability, stable operation and modular expansion advantages.

[0003] However, the traditional liquid cooling energy storage cabinet still has significant defects in structural design, which restricts its space utilization and deployment flexibility, which is specifically manifested as: in the conventional design, the liquid cooling unit and the energy storage converter are arranged in parallel compared with the battery pack, and the battery pack usually occupies the front area of the cabinet independently due to the large depth requirement, which leads to the redundancy of the space at the rear of the cabinet, and the components cannot be arranged compactly, and the width of the cabinet needs to be increased additionally to accommodate the redundant space, resulting in the increase of the land occupation area of the cabinet.

[0004] The above problems make it difficult for the traditional liquid cooling energy storage cabinet to meet the needs of compact and high-integration equipment in commercial and industrial scenes. Therefore, a new structural design is needed to optimize the arrangement of components and improve the utilization rate of the internal space of the cabinet. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a liquid cooling commercial and industrial energy storage cabinet, which optimizes the arrangement of components and improves the utilization rate of the internal space of the cabinet.

[0006] The technical scheme adopted by the utility model to solve its technical problems is: a liquid cooling commercial and industrial energy storage cabinet is provided, which comprises a cabinet body, a battery module, a liquid cooling unit and an energy storage converter;

[0007] The cabinet body is internally provided with a first transverse partition plate, which divides the inner cavity of the cabinet body into a lower installation area below the first transverse partition plate and an upper installation area above the first transverse partition plate;

[0008] The battery module is installed in the lower installation area through a battery rack, and the battery module comprises a plurality of battery packs which are vertically stacked and arranged;

[0009] The liquid cooling unit is installed in the upper installation area and connected with the battery module through a liquid cooling pipeline to cool the battery module;

[0010] The energy storage converter is also installed in the upper installation area and electrically connected with the battery pack to realize the bidirectional conversion of alternating current and direct current.

[0011] Further, the upper installation area is divided into an upper installation area lower cavity and an upper installation area upper cavity by a second transverse partition plate;

[0012] The liquid cooling unit is installed in the upper installation area lower cavity, and the liquid cooling pipeline is connected with the battery module through the first transverse partition plate;

[0013] The energy storage converter is installed in the upper installation area upper cavity, and the electrical pipeline of the energy storage converter is connected with the battery pack through the second transverse partition plate and the first transverse partition plate.

[0014] Further, the liquid cooling pipeline comprises a water outlet pipe group and a water return pipe group;

[0015] The liquid inlet end of the water outlet pipe group is connected with the liquid outlet of the liquid cooling unit, and the liquid outlet end of the water outlet pipe group is connected with the water cooling liquid inlet of the battery pack;

[0016] The liquid inlet end of the water return pipe group is connected with the water cooling liquid outlet of the battery pack, and the liquid outlet end of the water return pipe group is connected with the liquid return port of the liquid cooling unit.

[0017] Further, the water outlet pipe group comprises a water outlet pipe upper pipe, a water outlet pipe wall plug-in part and a water outlet pipe lower pipe;

[0018] The liquid inlet end of the water outlet pipe upper pipe is connected with the liquid outlet of the liquid cooling unit, and the liquid outlet end is connected with the top of the water outlet pipe wall plug-in part;

[0019] The water outlet pipe wall plug-in part penetrates through the first transverse partition plate and is fixed therewith;

[0020] The liquid inlet end of the water outlet pipe lower pipe is connected with the bottom of the water outlet pipe wall plug-in part, and the liquid outlet end is divided into multiple branches and connected with the water cooling liquid inlets of the battery packs respectively;

[0021] The water return pipe group comprises a water return pipe upper pipe, a water return pipe wall plug-in part and a water return pipe lower pipe;

[0022] The liquid outlet end of the water return pipe upper pipe is connected with the liquid return port of the liquid cooling unit, and the liquid inlet end is connected with the top of the water return pipe wall plug-in part;

[0023] The water return pipe wall plug-in part penetrates through the first transverse partition plate and is fixed therewith;

[0024] The liquid inlet end of the water return pipe lower pipe is connected with the bottom of the water return pipe wall plug-in part, and the liquid outlet end is divided into multiple branches and connected with the water cooling liquid outlets of the battery packs respectively.

[0025] Further, the water outlet pipe wall plug-in part and the water return pipe wall plug-in part are both provided with a fixed nut and a gasket on the upper and lower sides of the first transverse partition plate;

[0026] The fixed nut is screwed on the outer thread of the water outlet pipe wall penetrating plug or the water return pipe wall penetrating plug, and exerts force to make the gasket abut against the surface of the first transverse partition plate.

[0027] Further, the upper installation area lower cavity is further provided with an emergency power supply system and a fire extinguishing system with independent power supply, and the emergency power supply system is electrically connected to the fire extinguishing system.

[0028] Further, the upper installation area upper cavity is further provided with an AC / DC high-voltage box and an energy management system.

[0029] Further, the middle part of the first transverse partition plate and the second transverse partition plate is provided with heat insulation cotton.

[0030] Further, the liquid cooling commercial energy storage cabinet further comprises a cabinet door hinged to the cabinet body, and the cabinet door is provided with a front heat dissipation window corresponding to the front side of the upper installation area.

[0031] Further, the rear heat dissipation window is hinged to the cabinet body and can be independently opened and closed relative to the cabinet body.

[0032] The liquid cooling commercial energy storage cabinet has the following beneficial effects:

[0033] (1) The first transverse partition plate is arranged in the cabinet body to divide the inner cavity of the cabinet body into a lower installation area and an upper installation area, the battery module is vertically stacked and installed in the lower installation area, and the liquid cooling unit and the energy storage converter are separately arranged in the upper installation area, so that the space redundancy problem of the rear part of the cabinet body caused by the traditional left-right parallel layout is avoided, the components in the cabinet body are arranged more compactly, the floor area of the cabinet body is effectively reduced, and the cabinet body can better adapt to the demand of the commercial scene for compact and high-integration devices;

[0034] (2) The liquid cooling unit and the energy storage converter are respectively installed in the upper installation area lower cavity and the upper installation area upper cavity divided by the second transverse partition plate, so that the liquid cooling unit is located in an independent space and is separated from the energy storage converter and the battery module, and since the first transverse partition plate and the second transverse partition plate are both provided with heat insulation cotton, the heat transfer between different areas is effectively reduced, and the heat dissipation efficiency of the liquid cooling unit is guaranteed.

[0035] (3) The gasket locked by the fixed nut is arranged at the position where the water outlet pipe group or the water return pipe group penetrates the first transverse partition plate, the gasket plays a role of sealing the gap, the protection level (the protection level can reach IP67) is improved, the heat dissipation of the energy storage converter and the liquid cooling unit is completely separated from the battery module in the lower installation area, heat overflow from the gap to the lower installation area is avoided, and the battery module is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a perspective view of the utility model;

[0037] Figure 2 is Figure 1 a front view;

[0038] Figure 3 is the independent structure diagram of the liquid cooling pipeline in the utility model;

[0039] Figure 4 is the enlarged view of the water outlet pipe wall plug-in or the return pipe wall plug-in of the liquid cooling pipeline in the utility model when passing through the first transverse partition plate. DETAILED DESCRIPTION

[0040] The utility model will be further described in detail in combination with specific embodiments, but the implementation mode of the utility model is not limited to this.

[0041] Referring to Figure 1 and Figure 2 , the utility model provides a kind of liquid cooling industrial and commercial energy storage cabinet, mainly including cabinet 110, battery module 210, liquid cooling unit 310 and energy storage converter 410.

[0042] Cabinet 110 is the support and protective shell of entire energy storage cabinet, and its inside is divided into lower installation area 1a and upper installation area 1b by first transverse partition plate 111.

[0043] Battery module 210 is installed in lower installation area 1a by battery rack 220, and battery module 210 is composed of multiple detachable and vertically stacked battery packs 211, this installation mode facilitates the installation, disassembly and maintenance of battery pack 211, and can also fully utilize the space of lower installation area 1a, to realize the high integration of battery module 210.

[0044] Liquid cooling unit 310 and energy storage converter 410 are both installed in upper installation area 1b. Among them, liquid cooling unit 310 is connected with battery module 210 by liquid cooling pipeline 320, for cooling operation to battery module 210, to ensure that battery module 210 works in suitable temperature environment, and improve the performance and life of battery. Energy storage converter 410 is electrically connected with battery pack 211, and can realize the bidirectional conversion of alternating current and direct current, to meet the electrical connection demand of energy storage system under different working modes, that is, in the charging process, alternating current generated by commercial power or renewable energy (such as solar energy, wind energy, etc.) is converted into direct current, to charge battery module in energy storage cabinet, while in the discharging process, direct current stored in battery module can be converted into alternating current, to supply alternating current load or grid-connected output, to meet the demand of different power consumption scenarios.

[0045] In order to further optimize the space layout and component installation inside the upper installation area 1b, the upper installation area 1b is divided into an upper installation area lower cavity 1b1 and an upper installation area upper cavity 1b2 by a second transverse partition plate 112. The liquid cooling unit 310 is installed in the upper installation area lower cavity 1b1, and the liquid cooling pipe 320 is connected to the battery module 210 through the first transverse partition plate 111. The energy storage converter 410 is installed in the upper installation area upper cavity 1b2, and its electrical lines are connected to the battery pack 211 after passing through the second transverse partition plate 112 and the first transverse partition plate 111.

[0046] The layered installation mode described above makes the connection lines between components more clear and regular, reduces electrical interference, and improves system reliability.

[0047] By arranging the first transverse partition plate 111 inside the cabinet to divide the cabinet cavity into a lower installation area 1a and an upper installation area 1b, the battery module 210 is installed in the lower installation area 1a, and the liquid cooling unit 310 and the energy storage converter 410 are separately arranged in the upper installation area lower cavity 1b1 and the upper installation area upper cavity 1b2 separated by the second transverse partition plate 112. Such a structure avoids the space redundancy problem at the rear of the cabinet caused by the traditional left-right parallel layout, makes the arrangement of components inside the cabinet more compact, effectively reduces the floor area occupied by the cabinet, and can better adapt to the needs of commercial and industrial scenarios for compact and high-integration devices.

[0048] Referring to Figure 3 , the liquid cooling pipe 320 includes a water outlet pipe group 321 and a water return pipe group 322.

[0049] The liquid inlet end of the water outlet pipe group 321 is connected to the liquid outlet of the liquid cooling unit 310, and the liquid outlet end of the water outlet pipe group 321 is connected to the water cooling liquid inlet of the battery pack 211.

[0050] The liquid inlet end of the water return pipe group 322 is connected to the water cooling liquid outlet of the battery pack 211, and the liquid outlet end of the water return pipe group 322 is connected to the liquid return port of the liquid cooling unit 310.

[0051] Thus, a complete liquid cooling circulation loop is formed, ensuring that the cooling liquid can effectively circulate between the liquid cooling unit 310 and the battery module 210, achieving continuous cooling of the battery module 210.

[0052] Further, referring to Figure 3The water outlet pipe group 321 includes a water outlet pipe upper pipe 3211, a water outlet pipe wall penetrating plug 3212 and a water outlet pipe lower pipe 3213. The liquid inlet end of the water outlet pipe upper pipe 3211 is connected with the liquid outlet of the liquid cooling unit 310, and the liquid outlet end is connected with the top of the water outlet pipe wall penetrating plug 3212. The water outlet pipe wall penetrating plug 3212 penetrates through and is fixed to the first transverse partition plate 111. The liquid inlet end of the water outlet pipe lower pipe 3213 is connected with the bottom of the water outlet pipe wall penetrating plug 3212, and the liquid outlet end is divided into multiple branches and connected with the water cooling liquid inlets of the battery packs 211 respectively.

[0053] The water return pipe group 322 has a structure similar to that of the water outlet pipe group 321, including a water return pipe upper pipe 3221, a water return pipe wall penetrating plug 3222 and a water return pipe lower pipe 3223, which are connected in a manner corresponding to the water outlet pipe group 321, to ensure that the cooling liquid can flow back to the liquid cooling unit 310 smoothly.

[0054] Furthermore, in order to ensure the connection firmness and sealing between the water outlet pipe wall penetrating plug 3212 and the water return pipe wall penetrating plug 3222 and the first transverse partition plate 111, referring to Figure 4 , the water outlet pipe wall penetrating plug 3212 and the water return pipe wall penetrating plug 3222 are both provided with a fixed nut 323 and a gasket 324 on the upper and lower sides of the first transverse partition plate 111.

[0055] The fixed nut 323 is screwed on the external thread of the water outlet pipe wall penetrating plug 3212 or the water return pipe wall penetrating plug 3222, and exerts a force to make the gasket 324 tightly contact the surface of the first transverse partition plate 111, thereby sealing the gap at the position penetrating through the first transverse partition plate 111, improving the protection level (the protection level can reach IP67), and completely separating the heat dissipation of the energy storage converter 410 and the liquid cooling unit 310 from the battery modules 210 in the lower installation area 1a, so as to avoid the heat overflowing from the gap to the lower installation area 1a and affecting the battery modules 210.

[0056] In addition, referring to Figure 3 , the water outlet pipe upper pipe 3211 and the water outlet pipe lower pipe 3213 are connected with the water outlet pipe wall penetrating plug 3212 through quick plug connectors 32a, to improve the convenience during installation. Similarly, the water return pipe upper pipe 3221 and the water return pipe lower pipe 3223 are also connected with the water return pipe wall penetrating plug 3222 through quick plug connectors 32a.

[0057] Referring to Figure 1 and Figure 2 , in the upper installation area lower cavity 1b1, in addition to the liquid cooling unit 310, a standby power system 330 with independent power supply and a fire extinguishing system 340 are also installed, and the standby power system 330 is electrically connected to the fire extinguishing system 340.

[0058] The fire extinguishing system 340 is an important component for ensuring the safe operation of the energy storage cabinet, and is equipped with fire extinguishing agent.

[0059] In addition to the energy storage converter 410, the AC / DC high-voltage box 420 and the energy management system 430 are also installed in the upper cavity 1b2 of the upper installation area. Figure 1 Figure 2 The AC / DC high-voltage box 420 is used to realize the conversion control of AC and DC power, and cooperates with the energy storage converter 410 to ensure the electrical conversion efficiency and stability of the entire energy storage system.

[0060] In addition, in order to reduce the heat transfer between different areas inside the cabinet, the first and second transverse partitions 111 and 112 are provided with heat insulation cotton (not shown in the figure) in the middle, which can effectively reduce the heat transfer between different areas and ensure the heat dissipation efficiency of the liquid cooling unit 310.

[0061] In addition, as shown in Figure 1 Figure 2 The liquid cooling commercial energy storage cabinet further comprises a cabinet door 120 hinged to the cabinet body 110.

[0062] Preferably, referring to Figure 1 , the rear heat dissipation window 113 is hinged to the cabinet body 110 and can be independently opened and closed relative to the cabinet body 110.

[0063] Through the arrangement of the front and rear heat dissipation windows 1211 and 113, the air circulation inside the cabinet body can be effectively enhanced, and the heat generated by the liquid cooling unit 310, the energy storage converter 410 and other components during operation can be promptly dissipated, ensuring the normal operating temperature and prolonging the service life of the equipment.

[0064] ​​In actual manufacturing and installation use process, first, according to design requirements, the size of cabinet body 110 is determined, the first transverse partition plate 111 and the second transverse partition plate 112 are installed, and the inner cavity of the cabinet is divided into corresponding installation areas.Then, the battery rack 220 is installed in the lower installation area 1a, and the battery pack 211 is vertically stacked and installed on the battery rack 220 to form the battery module 210.Next, the liquid cooling unit 310, the standby power system 330 and the fire extinguishing system 340 are installed in the lower cavity 1b1 of the upper installation area, and the energy storage converter 410, the AC / DC high voltage box 420 and the energy management system 430 are installed in the upper cavity 1b2 of the upper installation area.In addition, according to the design requirements of the liquid cooling pipe, the water outlet pipe group 321 and the return water pipe group 322 are installed to ensure that each connection part is sealed reliably and the cooling liquid can flow normally.Finally, the cabinet door 120, the front heat dissipation window 1211 and the rear heat dissipation window 113 are installed, and the assembly of the whole liquid cooling commercial energy storage cabinet is completed.

[0065] During the operation of the energy storage cabinet, the battery module 210 exchanges electric energy with the external power grid or power equipment through the energy storage converter 410, realizes the storage and release of electric energy, and the battery module 210 is cooled by the liquid cooling pipe 320 according to the temperature of the battery module 210 to ensure that it works in an appropriate temperature range.Meanwhile, the standby power system 330 and the fire extinguishing system 340 are in standby state, and the standby power system 330 will provide power support for the fire extinguishing system 340 in case of emergency, and take timely fire extinguishing measures to ensure the safe operation of the energy storage system.The energy management system 430 monitors and manages the energy flow of the whole energy storage system in real time, optimizes the charge and discharge strategy of the energy storage system according to different industrial and commercial power demand and renewable energy generation, and improves the energy utilization efficiency and the economy of system operation.

[0066] The above only describes the preferred embodiments of the present application and is not used to limit the present application.For those skilled in the art, the present application can be changed and varied in various ways.Any modification, equivalent replacement, improvement, etc.made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid-cooled industrial and commercial energy storage cabinet, characterized in that, It includes a cabinet (110), a battery module (210), a liquid cooling unit (310), and an energy storage converter (410). The cabinet (110) is provided with a first horizontal partition (111) inside, which divides the inner cavity of the cabinet (110) into a lower mounting area (1a) located below the first horizontal partition (111) and an upper mounting area (1b) located above the first horizontal partition (111). The battery module (210) is mounted on the lower mounting area (1a) via a battery rack (220). The battery module (210) includes multiple detachable and vertically stacked battery packs (211). The liquid cooling unit (310) is installed in the upper mounting area (1b) and connected to the battery module (210) through the liquid cooling pipe (320) to cool the battery module (210); The energy storage converter (410) is also installed in the upper mounting area (1b) and electrically connected to the battery pack (211) for bidirectional conversion between AC and DC power; The upper mounting area (1b) is divided into a lower cavity (1b1) and an upper cavity (1b2) by a second transverse partition (112); the liquid cooling unit (310) is installed in the lower cavity (1b1) of the upper mounting area, and the liquid cooling pipe (320) passes through the first transverse partition (111) and is connected to the battery module (210); the energy storage converter (410) is installed in the upper cavity (1b2) of the upper mounting area, and the electrical lines of the energy storage converter (410) pass through the second transverse partition (112) and the first transverse partition (111) and are connected to the battery pack (211); The liquid cooling pipe (320) includes an outlet pipe assembly (321) and a return pipe assembly (322); the inlet end of the outlet pipe assembly (321) is connected to the outlet of the liquid cooling unit (310), and the outlet end of the outlet pipe assembly (321) is connected to the water cooling inlet of the battery pack (211); the inlet end of the return pipe assembly (322) is connected to the water cooling outlet of the battery pack (211), and the outlet end of the return pipe assembly (322) is connected to the return port of the liquid cooling unit (310). The water outlet pipe assembly (321) includes an upper water outlet pipe (3211), a water outlet pipe through-wall connector (3212), and a lower water outlet pipe (3213). The inlet end of the upper water outlet pipe (3211) is connected to the outlet of the liquid cooling unit (310), and the outlet end is connected to the top of the water outlet pipe through-wall connector (3212). The water outlet pipe through-wall connector (3212) passes through the first transverse partition (111) and is fixed thereto. The inlet end of the lower water outlet pipe (3213) is connected to the bottom of the water outlet pipe through-wall connector (3212), and the outlet end is divided into multiple branches that are respectively connected to the water cooling inlets of each battery pack (211). The return water pipe assembly (322) includes an upper return water pipe (3221), a return water pipe through-wall insert (3222), and a lower return water pipe (3223). The liquid outlet of the upper return water pipe (3221) is connected to the liquid return port of the liquid cooling unit (310), and the liquid inlet is connected to the top of the return water pipe through-wall insert (3222). The return water pipe through-wall insert (3222) passes through the first transverse partition (111) and is fixed thereto. The liquid outlet of the lower return water pipe (3223) is connected to the bottom of the return water pipe through-wall insert (3222), and the liquid inlet is divided into multiple branches that are respectively connected to the water cooling outlet of each battery pack (211).

2. The liquid-cooled industrial and commercial energy storage cabinet according to claim 1, characterized in that, The outlet pipe through-wall plug (3212) and the return pipe through-wall plug (3222) are both provided with fixing nuts (323) and washers (324) on the upper and lower sides of the first transverse partition (111). The fixing nut (323) is tightened onto the external thread of the water outlet pipe through-wall plug (3212) or the water return pipe through-wall plug (3222), and a force is applied to make the gasket (324) abut against the surface of the first transverse partition (111).

3. The liquid-cooled industrial and commercial energy storage cabinet according to claim 1, characterized in that, The lower cavity (1b1) of the upper installation area is also equipped with a backup power system (330) and a fire protection system (340) with independent power supply. The backup power system (330) is electrically connected to the fire protection system (340).

4. The liquid-cooled industrial and commercial energy storage cabinet according to claim 1, characterized in that, The upper cavity (1b2) of the upper mounting area is also equipped with an AC / DC high voltage box (420) and an energy management system (430).

5. A liquid-cooled industrial and commercial energy storage cabinet according to claim 1, characterized in that, Insulation cotton is provided between the first transverse partition (111) and the second transverse partition (112).

6. A liquid-cooled industrial and commercial energy storage cabinet according to claim 1, characterized in that, It also includes a cabinet door (120) hinged to the cabinet body (110), the cabinet door (120) having a front heat dissipation window (1211) on the front side of the upper mounting area (1b); and the cabinet body (110) having a rear heat dissipation window (113) on the rear side of the upper mounting area (1b).

7. A liquid-cooled industrial and commercial energy storage cabinet according to claim 6, characterized in that, The rear heat dissipation window (113) is hinged to the cabinet (110) and can be opened and closed independently relative to the cabinet (110).

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