Energy storage cabinet

Abstract

The utility model relates to the technical field of energy storage equipment, in particular to an energy storage cabinet. The energy storage cabinet comprises a cabinet body, a plurality of battery modules, a plurality of liquid cooling plates and a plurality of sealing plate assemblies. The multiple battery modules are arranged in the cabinet body at intervals in the vertical direction. The plurality of liquid cooling plates are in one-to-one correspondence with the plurality of battery modules, and each liquid cooling plate is used for bearing the corresponding battery module. The plurality of sealing plate assemblies are in one-to-one correspondence with the plurality of battery modules, each sealing plate assembly comprises a first sealing plate and a second sealing plate, and the first sealing plates and the second sealing plates are respectively arranged at two ends of the battery modules along the horizontal direction. The battery modules are packaged through the cabinet body, the liquid cooling plate and the sealing plate assembly, independent packaging of each battery module through a shell in the prior art can be replaced, the heat dissipation path is shortened, heat dissipated by the battery modules can be directly transmitted to the liquid cooling plate or the cabinet body, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment technology, and in particular to an energy storage cabinet. Background Technology

[0002] With the rapid development of renewable energy, energy storage technology is being used more and more widely in fields such as grid frequency regulation and peak shaving, industrial and commercial energy storage, data center backup power, photovoltaic energy storage, and wind power energy storage. Energy storage cabinets are one type of energy storage equipment. They are integrated and modular electrical energy storage devices, mainly used to store and release electrical energy, balance grid load, improve energy utilization efficiency, and are widely used in renewable energy, industrial and commercial, residential and public facilities.

[0003] In related technologies, energy storage cabinets typically consist of multiple battery packs. Each battery pack includes a battery module composed of multiple cells and a casing. The battery module is encapsulated in a metal or plastic casing to form an independent battery pack. However, the casing of the battery pack creates thermal resistance, increases the heat dissipation path, and results in lower heat dissipation efficiency, potentially leading to the risk of thermal runaway in the energy storage cabinet. Utility Model Content

[0004] This utility model provides an energy storage cabinet for encapsulating multiple battery modules within the cabinet.

[0005] This utility model provides an energy storage cabinet, comprising:

[0006] Cabinet;

[0007] Multiple battery modules are arranged vertically at intervals inside the cabinet.

[0008] Multiple liquid cooling plates, each corresponding to one of the multiple battery modules, with each liquid cooling plate serving to support its corresponding battery module; and

[0009] Multiple sealing plate assemblies are provided, each corresponding to one of the multiple battery modules. Each sealing plate assembly includes a first sealing plate and a second sealing plate, which are respectively disposed at both ends of the battery module along the horizontal direction.

[0010] In some embodiments, the upper and lower surfaces of the battery module located between two adjacent liquid cooling plates are respectively attached to the two adjacent liquid cooling plates.

[0011] In some implementations, it also includes:

[0012] A first partition is disposed inside the cabinet along the vertical direction, dividing the interior of the cabinet into a first receiving cavity and a second receiving cavity. The plurality of battery modules, the plurality of liquid cooling plates and the plurality of sealing plate assemblies are all disposed in the second receiving cavity.

[0013] A liquid cooling assembly includes a liquid cooling source, an inlet pipe, and an outlet pipe. The liquid cooling source is disposed in the first receiving cavity, and the inlet pipe and the outlet pipe are both disposed in the second receiving cavity. The inlet pipe and the outlet pipe are both connected to a plurality of liquid cooling plates, and one end of the inlet pipe and one end of the outlet pipe pass through the first partition and are connected to the liquid cooling source.

[0014] In some embodiments, a plurality of support components are also included, each of which corresponds to one of the plurality of liquid cooling plates. Each support component includes a first support member and a second support member. The first support member is disposed on the first partition plate, and the second support member is disposed on the second partition plate. The liquid cooling plate is supported by the corresponding first support member and second support member.

[0015] In some embodiments, a second partition is further included, which is disposed horizontally within the first receiving cavity and divides the first receiving cavity into a first sub-receiving cavity and a second sub-receiving cavity. The first sub-receiving cavity is used to receive the liquid cooling source, and the second sub-receiving cavity is used to receive electrical components that are electrically connected to the plurality of battery modules.

[0016] In some implementations, it also includes:

[0017] Multiple first conductive elements are provided, with each pair of adjacent battery modules connected via one first conductive element, so that the multiple battery modules are connected in series through the multiple first conductive elements; and

[0018] The second conductive element is electrically connected to all of the plurality of battery modules;

[0019] The plurality of first conductive elements and the second conductive elements are respectively disposed on both sides of the first sealing plate.

[0020] In some embodiments, the liquid cooling plate is provided with a clearance groove for avoiding the first conductive element.

[0021] In some embodiments, an exhaust channel is also included, which is disposed within the cabinet and is connected to all of the plurality of battery modules.

[0022] In some embodiments, multiple explosion-proof valves are also included, each corresponding to one of the multiple battery modules, and each battery module is connected to the exhaust channel through the corresponding explosion-proof valve.

[0023] In some embodiments, the explosion-proof valve is disposed on the corresponding second sealing plate.

[0024] This application provides an energy storage cabinet that, compared with the prior art, has at least the following advantages:

[0025] By encapsulating the battery module with a cabinet, liquid cooling plate, and sealing plate assembly, this technology can replace the existing technology where each battery module is independently encapsulated by a shell. This shortens the heat dissipation path and allows the heat emitted by the battery module to be directly transferred to the liquid cooling plate or cabinet, thus improving heat dissipation efficiency. Attached Figure Description

[0026] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0027] Figure 1 This is a first-view structural schematic diagram of the energy storage cabinet provided in the embodiment of this application without the first sealing plate assembled;

[0028] Figure 2 This is a structural schematic diagram of the energy storage cabinet assembly with the first sealing plate provided in the embodiment of this application from a first-view perspective;

[0029] Figure 3 This is a structural schematic diagram of the energy storage cabinet assembly with the second sealing plate provided in the embodiment of this application from a second perspective;

[0030] Figure 4 This is a structural schematic diagram of the energy storage cabinet door from a first-view perspective, provided in an embodiment of this application.

[0031] Figure 5 This is a structural schematic diagram of the cabinet door after assembly, provided in an embodiment of this application, from a second perspective.

[0032] Figure 6 This is a structural schematic diagram of the energy storage cabinet provided in the embodiment of this application without the first sealing plate installed, viewed from a third perspective.

[0033] Figure label:

[0034] 1-Energy storage cabinet;

[0035] 11-Cabinet body; 111-First receiving cavity; 1111-First sub-receiving cavity; 1112-Second sub-receiving cavity; 112-Second receiving cavity;

[0036] 12-Battery module;

[0037] 13-Liquid cooling plate; 131-Apartment groove;

[0038] 141 - First sealing plate; 142 - Second sealing plate;

[0039] 151 - First partition; 152 - Second partition;

[0040] 16-Liquid cooling assembly; 161-Liquid cooling source; 162-Liquid inlet pipe; 163-Liquid outlet pipe;

[0041] 171 - First support component; 172 - Second support component;

[0042] 181 - First conductive element; 182 - Second conductive element;

[0043] 191 - Exhaust passage; 192 - Explosion-proof valve;

[0044] 20 - Electrical components;

[0045] 21 - Front cabinet door; 22 - Rear cabinet door. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] In this application, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0049] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0050] Please refer to the following: Figure 1 , Figure 2 and Figure 3 This application provides an energy storage cabinet 1, including a cabinet body 11, multiple battery modules 12, multiple liquid cooling plates 13, and multiple sealing plate assemblies. The multiple battery modules 12 are vertically spaced inside the cabinet body 11. Each liquid cooling plate 13 corresponds to one of the multiple battery modules 12, and each liquid cooling plate 13 is used to support its corresponding battery module 12. Each sealing plate assembly includes a first sealing plate 141 and a second sealing plate 142, which are horizontally positioned at both ends of the battery module 12.

[0051] It should be noted that the battery module 12 in this embodiment does not have an independently encapsulated shell, but is encapsulated by the cabinet 11, the liquid cooling plate 13 and the sealing plate assembly.

[0052] Specifically, in the vertical direction, when a liquid cooling plate 13 is present above the battery module 12, two adjacent liquid cooling plates 13 encapsulate the battery module 12 in the vertical direction. Since the uppermost battery module 12 is not above a liquid cooling plate 13 but is adjacent to the top wall of the cabinet 11, the corresponding liquid cooling plate 13 and the top wall of the cabinet 11 encapsulate the uppermost battery module 12 in the vertical direction. In the first horizontal direction, a first sealing plate 141 and a second sealing plate 142 are respectively disposed at both ends of the battery module 12, encapsulating the corresponding battery module 12 in the first horizontal direction. In the second horizontal direction, the side wall of the cabinet 11 encapsulates the side of the battery module 12. The second horizontal direction is perpendicular to the first horizontal direction, and both the first and second horizontal directions are perpendicular to the vertical direction.

[0053] Therefore, in this embodiment, the battery module 12 is encapsulated by the cabinet 11, liquid cooling plate 13, and sealing plate assembly. This replaces the existing technology where each battery module 12 is independently encapsulated by a shell, shortening the heat dissipation path and allowing the heat dissipated by the battery module 12 to be directly transferred to the liquid cooling plate 13 or the cabinet 11, thus improving heat dissipation efficiency. Simultaneously, the reduced encapsulation structure of the battery module 12 lowers costs and optimizes the space within the energy storage cabinet 1, indirectly increasing energy storage density.

[0054] In addition, the liquid cooling plate 13 not only encapsulates the battery module 12 but also dissipates heat. The liquid cooling plate 13 can further optimize the heat dissipation efficiency of the battery module 12, preventing performance degradation or thermal runaway caused by high temperature.

[0055] In addition, please refer to the following: Figure 4 and Figure 5The energy storage cabinet 1 also includes a front cabinet door 21 and a rear cabinet door 22. The front cabinet door 21 and the rear cabinet door 22 are respectively connected to the front end and the rear end of the cabinet body 11. Setting up the front cabinet door 21 and the rear cabinet door 22 makes it convenient to view the situation inside the cabinet body 11 from the front or the rear end, and to facilitate the disassembly and assembly of the battery module 12 and other components inside the cabinet body 11 from the front or the rear end.

[0056] In some embodiments, the upper and lower surfaces of the battery module 12 located between two adjacent liquid cooling plates 13 are respectively attached to the two adjacent liquid cooling plates 13.

[0057] The two adjacent liquid cooling plates 13 encapsulate the battery module 12 in the vertical direction.

[0058] Apart from the topmost battery module 12, the upper and lower surfaces of the other battery modules 12 are respectively attached to two adjacent liquid cooling plates 13. Both liquid cooling plates 13 can dissipate heat from the battery modules 12, which can further optimize the heat dissipation efficiency of the battery modules 12, and at the same time balance the heat dissipation of the battery modules 12, preventing uneven heat dissipation between the upper and lower sides of the battery modules 12.

[0059] Please refer to the following: Figure 1 and Figure 2 In some embodiments, the energy storage cabinet 1 further includes a first partition 151 and a liquid cooling assembly 16. The first partition 151 is vertically disposed inside the cabinet body 11, dividing the interior of the cabinet body 11 into a first receiving cavity 111 and a second receiving cavity 112. Multiple battery modules 12, multiple liquid cooling plates 13, and multiple sealing plate assemblies are all disposed in the second receiving cavity 112. The liquid cooling assembly 16 includes a liquid cooling source 161, an inlet pipe 162, and an outlet pipe 163. The liquid cooling source 161 is disposed in the first receiving cavity 111, and the inlet pipe 162 and the outlet pipe 163 are both disposed in the second receiving cavity 112. The inlet pipe 162 and the outlet pipe 163 are both connected to the multiple liquid cooling plates 13, and one end of the inlet pipe 162 and one end of the outlet pipe 163 both pass through the first partition 151 and are connected to the liquid cooling source 161.

[0060] In this embodiment, the first partition 151 and the side wall of the cabinet 11 are arranged opposite each other in the second horizontal direction, and the first partition 151 and the side wall of the cabinet 11 encapsulate the battery module 12 in the second horizontal direction.

[0061] The first partition 151 is set to divide the cabinet 11 into a first receiving cavity 111 and a second receiving cavity 112. The liquid cooling source 161 is set in the first receiving cavity 111. In other words, the liquid cooling source 161 is integrated into the energy storage cabinet 1, which can improve the integration effect of the energy storage cabinet 1.

[0062] In this embodiment, the liquid inlet pipe 162 has a main liquid inlet end and multiple liquid inlet branches. All the multiple liquid inlet branches are connected to the main liquid inlet end. The main liquid inlet end passes through the first partition 151 and is connected to the liquid cooling source 161. Each of the multiple liquid inlet branches corresponds one-to-one with a multiple liquid cooling plate 13, and each liquid inlet branch is connected to a corresponding liquid cooling plate 13, thus connecting multiple liquid cooling plates 13 in parallel. Similarly, the liquid outlet pipe 163 also has a main liquid outlet end and multiple liquid outlet branches. The main liquid outlet end passes through the first partition 151 and is connected to the liquid cooling source 161. Each of the multiple liquid outlet branches corresponds one-to-one with a multiple liquid cooling plate 13, and each liquid outlet branch is connected to a corresponding liquid cooling plate 13. The heat exchange medium in the liquid cooling source 161 is output through the liquid inlet end and transported to the liquid cooling plate 13 through the liquid inlet branch end. After the heat exchange medium in the liquid cooling plate 13 exchanges heat with the battery module 12, it is output through the liquid outlet branch end and transported back to the liquid cooling source 161 through the liquid outlet end.

[0063] Please see Figure 6 In some embodiments, the energy storage cabinet 1 further includes multiple support components, which correspond one-to-one with multiple liquid cooling plates 13. Each support component includes a first support member and a second support member. The first support member is disposed on a first partition 151, and the second support member is disposed on a second partition 152. The liquid cooling plates 13 are supported by the corresponding first support member and second support member.

[0064] The liquid cooling plate 13 can be detachably connected to the first support and the second support by bolts to enhance the connection strength between the liquid cooling plate 13 and the first and second support.

[0065] Please refer to it again. Figure 1 and Figure 2 In some embodiments, the energy storage cabinet 1 further includes a second partition 152, which is arranged horizontally in the first receiving cavity 111 and divides the first receiving cavity 111 into a first sub-receiving cavity 1111 and a second sub-receiving cavity 1112. The first sub-receiving cavity 1111 is used to receive the liquid cooling source 161, and the second sub-receiving cavity 1112 is used to receive the electrical components 20 that are electrically connected to the multiple battery modules 12.

[0066] Among them, the electrical component 20 can monitor parameters such as temperature, voltage and current of the battery module 12 in real time.

[0067] The first receiving cavity 111 is divided into a first sub-receiving cavity 1111 and a second sub-receiving cavity 1112 by the second partition 152. The liquid cooling source 161 is placed in the first sub-receiving cavity 1111 and the electrical components 20 are placed in the second sub-receiving cavity 1112, which can further improve the integration function of the energy storage cabinet 1.

[0068] In some embodiments, the energy storage cabinet 1 also includes multiple BMS (Battery Management Systems), each corresponding to one of the multiple battery modules 12, and each BMS is electrically connected to its corresponding battery module 12. The cooperation of the BMS and electrical components 20 enables intelligent management of the battery modules 12.

[0069] Please refer to the following: Figure 1 and Figure 6 In some embodiments, the energy storage cabinet 1 further includes multiple first conductive elements 181 and second conductive elements 182. Each pair of adjacent battery modules 12 is connected through a first conductive element 181, so that multiple battery modules 12 are connected in series through multiple first conductive elements 181. The second conductive elements 182 are electrically connected to multiple battery modules 12. The multiple first conductive elements 181 and second conductive elements 182 are respectively disposed on both sides of the first sealing plate 141.

[0070] The first conductive element 181 can be a high-voltage copper busbar, and the second conductive element 182 can be a low-voltage wire harness.

[0071] Each adjacent battery module 12 is connected through a first conductive element 181, so that multiple battery modules 12 are connected in series through multiple first conductive elements 181, which can be used for high current power transmission between battery modules 12.

[0072] The second conductive element 182 is electrically connected to multiple battery modules 12, enabling the temperature, voltage, and current parameters of the multiple battery modules 12 to be transmitted via the second conductive element 182.

[0073] By distributing multiple first conductive elements 181 and second conductive elements 182 on both sides of the first sealing plate 141, electromagnetic compatibility issues between the first conductive elements 181 and the second conductive elements 182 can be reduced. For example, the multiple first conductive elements 181 can be disposed on the side of the first sealing plate 141 facing the battery module 12, and the second conductive elements 182 can be disposed on the side of the first sealing plate 141 away from the battery module 12.

[0074] Please continue reading. Figure 1 and Figure 6 In some embodiments, the liquid cooling plate 13 is provided with a clearance groove 131, which is used to avoid the first conductive member 181.

[0075] The liquid cooling plate 13 is provided with a relief groove 131 to avoid the first conductive member 181, so as to match the shape of the first conductive member 181, avoid interference between the liquid cooling plate 13 and the first conductive member 181, and at the same time, there is no need to change the shape of the first conductive member 181.

[0076] Please refer to it again. Figure 1 , Figure 2 and Figure 3 In some embodiments, the energy storage cabinet 1 further includes an exhaust channel 191, which is disposed inside the cabinet 11 and is connected to multiple battery modules 12.

[0077] It is understandable that battery module 12 will release a large amount of gas when overcharged, short-circuited, or thermally runaway. If the gas accumulates in the energy storage cabinet 1, it may cause a fire or even an explosion once it reaches the explosion limit. To solve this problem, this embodiment provides an exhaust channel 191, which is connected to multiple battery modules 12. This channel can promptly discharge the gas released by the battery module 12 due to overcharging, short circuit, or thermal runaway into the energy storage cabinet 1, preventing the gas from accumulating inside the cabinet and avoiding a fire or explosion, thus improving the safety of the energy storage cabinet 1.

[0078] In some embodiments, the energy storage cabinet 1 also includes multiple explosion-proof valves 192 (not shown in the figure), with each explosion-proof valve 192 corresponding to a multiple battery module 12, and each battery module 12 connected to the exhaust channel 191 through the corresponding explosion-proof valve 192.

[0079] Among them, multiple explosion-proof valves 192 correspond one-to-one with multiple battery modules 12, so that when multiple battery modules 12 discharge gas through the exhaust pipe, they can be independently controlled by their respective corresponding explosion-proof valves 192, that is, the gas discharge between multiple battery modules 12 can be independently controlled, thus optimizing gas management.

[0080] In some embodiments, the explosion-proof valve 192 is disposed on the corresponding second sealing plate 142.

[0081] Since each of the multiple explosion-proof valves 192 corresponds to one of the multiple battery modules 12, and each of the multiple battery modules 12 corresponds to one of the multiple second sealing plates 142, the multiple explosion-proof valves 192 also correspond one-to-one with the multiple second sealing plates 142. Placing the explosion-proof valves 192 on the corresponding second sealing plates 142 can optimize space design.

[0082] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage cabinet, characterized in that, include: Cabinet; Multiple battery modules are arranged vertically at intervals inside the cabinet. Multiple liquid cooling plates, each corresponding to one of the multiple battery modules, with each liquid cooling plate used to support the corresponding battery module; as well as Multiple sealing plate assemblies are provided, each corresponding to one of the multiple battery modules. Each sealing plate assembly includes a first sealing plate and a second sealing plate, which are respectively disposed at both ends of the battery module along the horizontal direction.

2. The energy storage cabinet according to claim 1, characterized in that, The upper and lower surfaces of the battery module located between two adjacent liquid cooling plates are respectively attached to the two adjacent liquid cooling plates.

3. The energy storage cabinet according to claim 1, characterized in that, Also includes: A first partition is disposed inside the cabinet along the vertical direction, dividing the interior of the cabinet into a first receiving cavity and a second receiving cavity. The plurality of battery modules, the plurality of liquid cooling plates and the plurality of sealing plate assemblies are all disposed in the second receiving cavity. as well as A liquid cooling assembly includes a liquid cooling source, an inlet pipe, and an outlet pipe. The liquid cooling source is disposed in the first receiving cavity, and the inlet pipe and the outlet pipe are both disposed in the second receiving cavity. The inlet pipe and the outlet pipe are both connected to a plurality of liquid cooling plates, and one end of the inlet pipe and one end of the outlet pipe pass through the first partition and are connected to the liquid cooling source.

4. The energy storage cabinet according to claim 3, characterized in that, It also includes multiple support components, each corresponding to one of the multiple liquid cooling plates. Each support component includes a first support member and a second support member. The first support member is disposed on the first partition, and the second support member is disposed on the second partition. The liquid cooling plate is supported by the corresponding first support member and second support member.

5. The energy storage cabinet according to claim 3, characterized in that, It also includes a second partition, which is disposed horizontally within the first receiving cavity and divides the first receiving cavity into a first sub-receiving cavity and a second sub-receiving cavity. The first sub-receiving cavity is used to receive the liquid cooling source, and the second receiving cavity is used to receive electrical components that are electrically connected to the plurality of battery modules.

6. The energy storage cabinet according to any one of claims 1-5, characterized in that, Also includes: Multiple first conductive elements are provided, and each pair of adjacent battery modules is connected through one first conductive element, so that the multiple battery modules are connected in series through the multiple first conductive elements. as well as The second conductive element is electrically connected to all of the plurality of battery modules; The plurality of first conductive elements and the second conductive elements are respectively disposed on both sides of the first sealing plate.

7. The energy storage cabinet according to claim 6, characterized in that, The liquid cooling plate is provided with a clearance groove, which is used to avoid the first conductive element.

8. The energy storage cabinet according to any one of claims 1-5, characterized in that, It also includes an exhaust channel, which is located inside the cabinet and is connected to all of the multiple battery modules.

9. The energy storage cabinet according to claim 8, characterized in that, It also includes multiple explosion-proof valves, each of which corresponds to one of the multiple battery modules. Each battery module is connected to the exhaust channel through the corresponding explosion-proof valve.

10. The energy storage cabinet according to claim 9, characterized in that, The explosion-proof valve is installed on the corresponding second sealing plate.

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