Energy storage cabinet and energy storage system

Abstract

The utility model relates to the technical field of battery energy storage system application, in particular to an energy storage cabinet and an energy storage system. The energy storage cabinet comprises a cabinet body, a battery pack, a power distribution control system, a first heat dissipation system and a second heat dissipation system, the cabinet body comprises a battery cabin and a power distribution cabin, the battery pack is arranged in the battery cabin, and the power distribution control system is arranged in the power distribution cabin; the first heat dissipation system is arranged to be used for conducting heat dissipation on the battery pack; the second heat dissipation system is arranged to be used for conducting heat dissipation on the power distribution control system. According to the technical scheme, the problem that an existing heat dissipation mode is difficult to meet the heat dissipation requirements of the battery pack and the electrical module can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of battery energy storage system applications, and more specifically, to an energy storage cabinet and an energy storage system. Background Art

[0002] As a device for storing, converting and outputting electrical energy, the energy storage cabinet can improve the utilization and stability of the power grid and reduce energy waste. With the development and application of electrochemical energy storage technology, the requirements for the functional integration and space utilization of energy storage cabinets are getting higher and higher. In related technologies, in order to improve space utilization, the battery pack and electrical module in the energy storage cabinet usually use the same heat dissipation system for heat dissipation. However, in actual use, the temperature changes of the battery pack and the electrical module are different. The existing heat dissipation mode is difficult to meet the heat dissipation requirements of the battery pack and the electrical module. Utility Model Content

[0003] The embodiments of the present application at least provide an energy storage cabinet and an energy storage system to improve the problem that the existing heat dissipation mode is difficult to meet the heat dissipation requirements of battery packs and electrical modules.

[0004] In a first aspect, an embodiment of the present application provides an energy storage cabinet, comprising: a cabinet body, a battery pack, a power distribution control system, a first heat dissipation system and a second heat dissipation system;

[0005] The cabinet includes a battery compartment and a power distribution compartment, the battery pack is arranged in the battery compartment, and the power distribution control system is arranged in the power distribution compartment;

[0006] The first heat dissipation system is configured to dissipate heat from the battery pack;

[0007] The second heat dissipation system is configured to dissipate heat for the power distribution control system.

[0008] In an optional implementation, both the first heat dissipation system and the second heat dissipation system use air cooling to dissipate heat.

[0009] In an optional embodiment, the first heat dissipation system includes an air conditioner.

[0010] In an optional embodiment, a plurality of air ducts are formed between the battery pack and the battery compartment, and the cold air exhausted by the air conditioner dissipates the heat of the battery pack when passing through the air ducts.

[0011] In an optional embodiment, the air conditioner is disposed in the battery compartment.

[0012] In an optional embodiment, the cabinet body is provided with a cabinet door;

[0013] The air conditioner is arranged on a side of the cabinet door facing the battery pack, and the air conditioner is located in the battery compartment when the cabinet door is closed.

[0014] In an optional embodiment, the second heat dissipation system includes an exhaust fan.

[0015] In an optional embodiment, the cabinet is provided with an air inlet and an air outlet, and the air inlet and the air outlet respectively connect the power distribution cabin with the outside world;

[0016] The exhaust fan is arranged at the air outlet, and is used to circulate air between the power distribution cabin and the outside.

[0017] In a second aspect, an embodiment of the present application further provides an energy storage system, comprising the energy storage cabinet described in any of the aforementioned embodiments.

[0018] The above technical solution of the present application has the following beneficial technical effects:

[0019] The energy storage cabinet of the embodiment of the present application includes a first heat dissipation system and a second heat dissipation system. The first heat dissipation system is configured to dissipate heat for the battery pack, and the second heat dissipation system is configured to dissipate heat for the power distribution control system. In this way, the battery pack and the electrical module can be cooled separately, thereby improving the problem that the existing heat dissipation mode is difficult to meet the heat dissipation requirements of the battery pack and the electrical module.

[0020] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solutions of the present application. It should be understood that the following drawings only illustrate certain embodiments of the present application and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic diagram of the structure of the energy storage cabinet provided in an embodiment of the present application is shown;

[0023] Figure 2 A first view of an EMS control module provided in an embodiment of the present application is shown;

[0024] Figure 3A second view of the EMS control module provided in an embodiment of the present application is shown;

[0025] Figure 4 A first view of a low-voltage power distribution module provided in an embodiment of the present application is shown;

[0026] Figure 5 A second view of the low-voltage power distribution module provided in an embodiment of the present application is shown;

[0027] Figure 6 A first view of a high-voltage power distribution module provided in an embodiment of the present application is shown;

[0028] Figure 7 A second view of the high-voltage power distribution module provided in an embodiment of the present application is shown;

[0029] Figure 8 A schematic diagram of the structure of a battery pack provided in an embodiment of the present application is shown;

[0030] Fig. 9 A schematic diagram of the internal air duct of a battery pack provided in an embodiment of the present application is shown;

[0031] Reference numerals:

[0032] 1. Cabinet; 11. Battery compartment; 12. Power distribution compartment; 13. First cabinet door; 14. Second cabinet door; 15. Air inlet; 16. Protective grille; 2. Battery pack; 21. Battery cell; 22. First air duct; 23. Second air duct; 24. Fan; 3. High-voltage box; 4. EMS control module; 41. First cabinet; 42. Display screen; 43. Switch quantity acquisition control module; 44. Switch; 5. Low-voltage power distribution module; 51. Second cabinet body; 52, electric meter; 53, cabinet equipment miniature circuit breaker; 54, terminal block; 55, fuse; 56, intermediate relay; 57, switching power supply; 6, energy storage converter; 7, high-voltage distribution module; 71, bracket; 72, AC circuit breaker; 73, grounding copper bar; 74, current transformer; 75, miniature circuit breaker; 76, surge protector; 8, air conditioner; 81, cold air outlet; 101, main air duct; 102, branch air duct. DETAILED DESCRIPTION

[0033] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] As a device for storing, converting and outputting electrical energy, the energy storage cabinet can improve the utilization and stability of the power grid and reduce energy waste. With the development and application of electrochemical energy storage technology, the requirements for the functional integration and space utilization of energy storage cabinets are getting higher and higher. In related technologies, in order to improve space utilization, the battery pack and electrical module in the energy storage cabinet usually use the same heat dissipation system for heat dissipation. However, in actual use, the temperature changes of the battery pack and the electrical module are different. The existing heat dissipation mode is difficult to meet the heat dissipation requirements of the battery pack and the electrical module.

[0035] To this end, an embodiment of the present application provides an energy storage cabinet to solve the problem that existing heat dissipation modes are difficult to meet the heat dissipation requirements of battery packs and electrical modules.

[0036] In order to make the objectives, technical solutions and advantages of the present application more clear, they are described in detail below with reference to specific drawings and embodiments.

[0037] Figure 1 A schematic diagram of the structure of an energy storage cabinet provided in an embodiment of the present application is shown. Figure 2 A first view of an EMS control module provided in an embodiment of the present application is shown. Figure 3 A second view of the EMS control module provided in an embodiment of the present application is shown. Figure 4 A first view of a low-voltage power distribution module provided in an embodiment of the present application is shown. Figure 5 A second view of the low-voltage power distribution module provided in an embodiment of the present application is shown. Figure 6 A first view of a high-voltage power distribution module provided in an embodiment of the present application is shown. Figure 7 A second view of the high-voltage power distribution module provided in an embodiment of the present application is shown. Figure 8 A schematic diagram of the structure of a battery pack provided in an embodiment of the present application is shown. Fig. 9 A schematic diagram of the internal air duct of the battery pack provided in an embodiment of the present application is shown.

[0038] refer to Figure 1 The energy storage cabinet provided in the embodiment of the present application includes a cabinet body 1, a battery pack and a power distribution control system. Specifically, the cabinet body 1 includes a battery compartment 11 and a power distribution compartment 12, the battery pack is arranged in the battery compartment 11, and the power distribution control system is arranged in the power distribution compartment 12.

[0039] The battery pack may include a plurality of battery packs 2, which are mounted in the battery compartment 11 via sheet metal brackets and arranged in rows. Figure 1 As shown, the number of battery packs 2 is 15, and the 15 battery packs 2 are arranged in two rows, wherein the number of battery packs 2 in one row is 8, and the number of battery packs 2 in the other row is 7, and the two rows of battery packs 2 are distributed in the battery compartment 11 along the width direction of the cabinet 1.

[0040] The battery pack may also include a high-voltage box 3, which is electrically connected to the battery pack 2. The high-voltage box 3 is also electrically connected to the power distribution control system by using a cable passing through the wall hole between the battery compartment 11 and the power distribution compartment 12. In a specific configuration, the high-voltage box 3 is located at the bottom of the battery compartment 11 of the battery pack 2, near the power distribution compartment 12. For example, Figure 1 As shown, the high-voltage box 3 is located below a row of battery packs 2 near the power distribution compartment 12. This arrangement can shorten the cable length between the high-voltage box 3 and the power distribution control system, making the inlet and outlet lines smoother.

[0041] The power distribution silo can be designed in a modular manner. Figure 1 As shown, the power distribution control system may include electrical modules such as an EMS control module 4, a low-voltage power distribution module 5, an energy storage converter 6, and a high-voltage power distribution module 7, and each electrical module is sequentially arranged from top to bottom in the power distribution cabin 12. This arrangement has a compact structure, a high degree of integration, and is simple in production and later maintenance.

[0042] refer to Figure 2 and Figure 3 The EMS control module 4 may include a first box body 41 , a display screen 42 may be provided at the front end of the first box body 41 , and a switch quantity acquisition control module 43 and a switch 44 may be installed at the back of the first box body 41 .

[0043] refer to Figure 4 and Figure 5 The low-voltage power distribution module 5 may include a second box 51, the front end of which may be installed with an electric meter 52, a miniature circuit breaker of the cabinet 1, and a terminal block 54, and the inner bottom plate of the second box 51 may be installed with devices such as a fuse 55, an intermediate relay 56, and a switching power supply 57.

[0044] refer to Figure 6 and Figure 7 The high-voltage power distribution module 7 may include a bracket 71, the bracket 71 may use a 2mm sheet metal substrate, the front end of the bracket 71 may be installed with an AC circuit breaker 72, a grounding copper bus 73, and a power distribution panel, the upper end of the bracket 71 may be installed with a current transformer 74, and the back of the bracket 71 may be installed with a small circuit breaker 75 and a surge protector 76. In a specific implementation, the bracket 71 may be provided with a fillet at the wiring position to facilitate wiring. For example, the corner between the front end and the upper end of the bracket 71 may be provided with an R75 fillet.

[0045] refer to Figure 1 In the embodiment of the present application, the cabinet 1 is provided with a cabinet door for protecting the battery pack and the electrical module. Figure 1 The state in which the cabinet door is opened is shown in FIG.

[0046] Optionally, the cabinet door can be rotatably connected to the cabinet body 1, and the cabinet door can be closed or opened by rotating it.

[0047] Optionally, the cabinet door can be a single door or a double door. Figure 1 As shown, the embodiment of the present application shows that the cabinet door includes a first cabinet door 13 and a second cabinet door 14. The first cabinet door 13 is consistent in size and shape with the front of the battery compartment 11, and is used to close the battery compartment 11 to protect the battery pack. The second cabinet door 14 is consistent in size and shape with the front of the power distribution compartment 12, and is used to close the power distribution compartment 12 to protect the electrical module.

[0048] In the embodiment of the present application, the cabinet 1 is provided with an interlayer on the periphery of the battery compartment 11, and the interlayer is filled with an insulation layer to achieve thermal insulation of the battery compartment 11 and prevent the battery compartment 11 from being disturbed by external temperature and affecting the operation of the battery pack.

[0049] Optionally, the width of the interlayer can be 20-30 mm. In specific implementations, the width of the interlayer can be selected according to actual conditions. For example, the width of the interlayer can be selected to be 20 mm, 25 mm, or 30 mm.

[0050] Optionally, the insulation layer can be made of rock wool, which has both thermal insulation and fire protection functions. In specific implementation, the rock wool requires a bulk density of ≥ 120kg / m 3 , thermal conductivity ≤0.043W / (m·K).

[0051] In an embodiment of the present application, the energy storage cabinet further includes a first heat dissipation system and a second heat dissipation system. The first heat dissipation system is configured to dissipate heat for the battery pack. The second heat dissipation system is configured to dissipate heat for the power distribution control system. This configuration enables the battery pack and the electrical module to be dissipated separately, thereby improving the problem that the existing heat dissipation mode is difficult to meet the heat dissipation requirements of the battery pack and the electrical module.

[0052] Optionally, both the first heat dissipation system and the second heat dissipation system may dissipate heat by air cooling.

[0053] refer to Figure 1 Optionally, the first heat dissipation system includes an air conditioner 8, and utilizes the cold air blown out by the air conditioner 8 to dissipate the heat of the battery pack.

[0054] A plurality of air ducts may be formed between the battery pack and the battery compartment 11, and the cold air discharged by the air conditioner 8 dissipates heat from the battery pack when passing through the air ducts. Figure 1 As shown, the battery pack includes two groups of battery packs 2, and the two groups of battery packs 2 are arranged along the width direction of the cabinet 1. The battery packs 2 in each group of battery packs 2 are arranged along the height direction of the cabinet 1. A main air duct 101 is formed between the two groups of battery packs 2 and the top cover of the battery compartment 11, and branch air ducts 102 are formed between the two groups of battery packs 2 and between the two groups of battery packs 2 and the side walls of the battery compartment 11. The cold air outlet 81 of the air conditioner 8 is connected to the main air duct 101. The cold air enters the branch air duct 102 after passing through the main air duct 101, and is discharged to the outside through the holes on the cabinet 1 after dissipating the heat for each battery pack 2. In this way, the heat dissipation efficiency of the battery pack can be improved, and the temperature uniformity performance of the battery pack 2 can be improved.

[0055] Furthermore, the battery pack 2 may be provided with an internal air duct, which is connected to the air duct so that the cold air can take away the internal heat of the battery pack 2, thereby improving the heat dissipation efficiency. Figure 8 As shown, the battery pack 2 includes a first battery cell 21 group and a second battery cell 21 group, and the first battery cell 21 group and the second battery cell 21 group are spaced apart along the width direction of the cabinet 1, so that a first air duct 22 is formed between the first battery cell 21 group and the second battery cell 21 group, and the first battery cell 21 group and the second battery cell 21 group each include a plurality of battery cells 21, and the battery cells 21 are spaced apart along the thickness direction of the cabinet 1, so that a second air duct 23 is formed between adjacent battery cells 21, and the two ends of the second air duct 23 are respectively connected to the air duct and the first air duct 22. Cold air can enter the second air duct 23 and the first air duct 22 from the air duct in sequence, and finally return to the air duct from the air outlet of the first air duct 22 or be discharged to the outside through the holes on the cabinet 1. On this basis, a fan 24 can be provided at the air outlet of the first air duct 22 of the battery pack 2 to increase the gas flow and flow rate passing through the inside of the battery pack 2, thereby improving the heat dissipation efficiency inside the battery pack 2.

[0056] Optionally, the air conditioner 8 is arranged in the battery compartment 11. This arrangement can make the overall appearance of the energy storage cabinet better, and can protect the air conditioner 8 and prevent dust, foreign matter, etc. from entering the air conditioner 8.

[0057] refer to Figure 1 Optionally, the air conditioner 8 is arranged on the side of the cabinet door (first cabinet door 13) facing the battery pack, and the air conditioner 8 is located in the battery compartment 11 when the cabinet door is closed. This arrangement can facilitate the enclosure of the air conditioner 8 and can avoid affecting the enclosure of the battery pack due to the air conditioner 8 blocking the battery pack.

[0058] Optionally, the second heat dissipation system includes an exhaust fan (not shown in the figure), and utilizes the exhaust fan to drive air circulation to dissipate heat for the electrical module.

[0059] The cabinet 1 may be provided with an air inlet 15 and an air outlet, and the air inlet 15 and the air outlet respectively connect the power distribution compartment 12 with the outside. In a specific configuration, the exhaust fan is provided at the air outlet, and the exhaust fan is used to circulate air between the power distribution compartment 12 and the outside.

[0060] The air inlet 15 and the air outlet are respectively located at the front and rear ends of the power distribution compartment 12. Specifically, the air inlet 15 can be arranged on the second cabinet door 14.

[0061] Furthermore, the air inlet 15 and the air outlet may be provided with a protective grille 16 to ensure the protection level of the cabinet 1 .

[0062] In the above technical solution, the energy storage cabinet includes a first heat dissipation system and a second heat dissipation system. The first heat dissipation system is configured to dissipate heat for the battery pack, and the second heat dissipation system is configured to dissipate heat for the power distribution control system. In this way, the battery pack and the electrical module can be cooled separately, thereby improving the problem that the existing heat dissipation mode is difficult to meet the heat dissipation requirements of the battery pack and the electrical module.

[0063] The embodiment of the present application also provides an energy storage system, including the energy storage cabinet of the above embodiment. The energy storage cabinet includes a first heat dissipation system and a second heat dissipation system, the first heat dissipation system is configured to dissipate heat for the battery pack, and the second heat dissipation system is configured to dissipate heat for the power distribution control system, so that the battery pack and the electrical module can be dissipated separately, thereby improving the problem that the existing heat dissipation mode is difficult to meet the heat dissipation requirements of the battery pack and the electrical module.

[0064] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this application.

[0065] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An energy storage cabinet, characterized in that: include: Cabinet, battery pack, power distribution control system, first heat dissipation system and second heat dissipation system; The cabinet includes a battery compartment and a power distribution compartment, the battery pack is arranged in the battery compartment, and the power distribution control system is arranged in the power distribution compartment; The first heat dissipation system is configured to dissipate heat from the battery pack; The second heat dissipation system is configured to dissipate heat for the power distribution control system.

2. The energy storage cabinet according to claim 1, characterized in that: The first heat dissipation system and the second heat dissipation system both adopt air cooling to dissipate heat.

3. The energy storage cabinet according to claim 2, characterized in that: The first heat dissipation system includes an air conditioner.

4. The energy storage cabinet according to claim 3, characterized in that: A plurality of air ducts are formed between the battery pack and the battery compartment, and the cold air discharged by the air conditioner dissipates heat from the battery pack when passing through the air ducts.

5. The energy storage cabinet according to claim 3, characterized in that: The air conditioner is arranged in the battery compartment.

6. The energy storage cabinet according to claim 5, characterized in that: The cabinet body is provided with a cabinet door; The air conditioner is arranged on a side of the cabinet door facing the battery pack, and the air conditioner is located in the battery compartment when the cabinet door is closed.

7. The energy storage cabinet according to claim 2, characterized in that: The second heat dissipation system includes an exhaust fan.

8. The energy storage cabinet according to claim 7, characterized in that: The cabinet is provided with an air inlet and an air outlet, and the air inlet and the air outlet respectively connect the power distribution cabin with the outside world; The exhaust fan is arranged at the air outlet, and is used to circulate air between the power distribution cabin and the outside.

9. An energy storage system, characterized in that: Comprising the energy storage cabinet as described in any one of claims 1-8.

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