Battery cluster and energy storage system

Abstract

The utility model provides a battery cluster and an energy storage system. The battery cluster comprises a plurality of battery monomers, a battery bracket and a junction box, a plurality of accommodating spaces arranged side by side are formed in the battery bracket, the plurality of accommodating spaces comprise at least one functional cavity and a plurality of battery cavities, and the functional cavity is positioned at the end part of the battery bracket; the junction box comprises a box body, a high-voltage circuit assembly and a low-voltage circuit assembly, a high-voltage area and a low-voltage area are formed in the box body, the high-voltage circuit assembly is arranged in the box body, located in the high-voltage area and used for being electrically connected with the battery monomers and the converter, and the low-voltage circuit assembly is arranged in the box body, located in the low-voltage area and used for being electrically connected with the converter. The connector is used for electrically connecting a high-voltage circuit assembly and a battery management system. Wherein the plurality of single batteries are respectively and correspondingly arranged in the plurality of battery cavities, and the junction box is arranged in the functional cavity.

Description

Technical Field

[0001] This utility model relates to the field of energy storage system technology, specifically to a battery cluster and energy storage system. Background Technology

[0002] For high-power battery clusters, whether in the field of energy storage batteries or power batteries, the battery cluster structure design generally includes high-voltage wiring harnesses and low-voltage wiring harnesses. In order to separate the high-voltage wiring harnesses and low-voltage wiring harnesses inside the battery cluster to avoid mutual interference, the traditional battery cluster structure usually designs independent high-voltage junction boxes and low-voltage junction boxes. As a result, the internal space of the battery cluster structure usually needs to be designed to be large, which makes the volumetric energy density of the battery cluster structure relatively small. Utility Model Content

[0003] The embodiments of this utility model provide a battery cluster and energy storage system, which can improve the technical problem of low internal volumetric energy density of the battery cluster structure.

[0004] In a first aspect, embodiments of the present invention provide a battery cluster, comprising:

[0005] Multiple battery cells;

[0006] A battery holder, along its length, has multiple accommodating spaces arranged side-by-side, each space including at least one functional cavity and multiple battery cavities, the functional cavity being located at one end of the battery holder; and...

[0007] A junction box includes a box body, a high-voltage circuit assembly, and a low-voltage circuit assembly. A high-voltage area and a low-voltage area are formed within the box body. The high-voltage circuit assembly is disposed within the box body and located in the high-voltage area, and is used to electrically connect multiple battery cells and an inverter. The low-voltage circuit assembly is disposed within the box body and located in the low-voltage area, and is used to electrically connect the high-voltage circuit assembly and a battery management system.

[0008] The battery cells are respectively disposed in the battery cavities, and the junction box is disposed in the functional cavity.

[0009] In one embodiment, the battery holder is installed vertically, and the length direction of the battery holder is configured as vertical.

[0010] The plurality of battery cavities are stacked vertically, and the functional cavity is located on top of the plurality of battery cavities.

[0011] In one embodiment, the battery cluster further includes a display component disposed on the outside of the battery bracket and corresponding to the junction box position, and the display component is electrically connected to the low-voltage circuit component.

[0012] In one embodiment, the junction box further includes a first terminal, a second terminal, and a third terminal disposed on the box body. The first terminal is used to electrically connect the low-voltage circuit assembly and the battery management unit, the second terminal is used to electrically connect the low-voltage circuit assembly and the backup power supply, and the third terminal is used to electrically connect the high-voltage circuit assembly and the centralized monitoring unit.

[0013] In one embodiment, the battery cluster further includes a liquid cooling structure, the liquid cooling structure comprising:

[0014] A liquid cooler is disposed within one of the aforementioned functional chambers and located above the junction box;

[0015] A liquid cooling plate assembly includes multiple liquid cooling plates, each liquid cooling plate corresponding to one of the battery cells, for liquid cooling heat dissipation of the battery cells; and...

[0016] A liquid cooling pipe assembly is disposed on the battery bracket, and the liquid cooling pipe assembly connects the liquid cooler and the plurality of liquid cooling plates.

[0017] In one embodiment, the liquid cooling pipe assembly includes:

[0018] A liquid inlet main pipe, one end of which is connected to the liquid outlet of the liquid cooler;

[0019] A liquid return main pipe, one end of which is connected to the liquid return port of the liquid cooler; and...

[0020] Multiple liquid-cooled branch pipes are respectively arranged corresponding to multiple liquid-cooled plates. Each liquid-cooled branch pipe includes an inlet branch pipe and an outlet branch pipe. The inlet branch pipe is connected to the inlet main pipe and the inlet end of the liquid-cooled plate, and the outlet branch pipe is connected to the return main pipe and the outlet end of the liquid-cooled plate.

[0021] In one embodiment, the battery holder includes:

[0022] The main frame is erected vertically; and,

[0023] Multiple frames are disposed within the main frame and spaced apart vertically. Each frame includes a frame connecting to the main frame and a shelf disposed on the frame. An accommodating space is formed between two adjacent frames and the main frame.

[0024] The battery cell and the junction box are respectively located in the corresponding accommodating space and placed on the corresponding shelf.

[0025] In one embodiment, the battery cluster further includes multiple liquid cooling plates, a liquid inlet pipe, and a liquid return pipe. The liquid cooling plates are located inside the battery cavity and are disposed between the battery cell and the corresponding storage plate. The liquid inlet pipe and the liquid return pipe are disposed on the main frame and both extend vertically.

[0026] In one embodiment, the battery bracket further includes a surrounding plate, which is disposed on the outside of the main frame and forms an installation gap with the main frame;

[0027] The inlet pipe and the return pipe are mounted on the enclosure and located within the installation gap.

[0028] In one embodiment, the enclosure includes two side panels and multiple baffles. The two side panels are disposed on the outside of the main frame and are arranged side by side with intervals. Each side panel extends vertically. The multiple baffles are arranged side by side vertically. Each baffle connects the two side panels to form the installation gap on the outside of the main frame. Each baffle corresponds to one accommodating space.

[0029] The liquid inlet pipe and the liquid return pipe are respectively disposed on the two side plates.

[0030] In one embodiment, each of the battery cells is provided with an explosion-proof valve, and the multiple explosion-proof valves of the multiple battery cells are located on the same side of the battery bracket;

[0031] The battery cluster also includes a gas collecting pipe, which is disposed on the battery bracket and extends along the length of the battery bracket. The gas collecting pipe is connected to a plurality of the explosion-proof valves.

[0032] In one embodiment, the battery cluster further includes a fan disposed at one end of the gas collecting pipe for extracting gas from the gas collecting pipe.

[0033] Secondly, embodiments of this utility model provide an energy storage system, including the aforementioned battery cluster.

[0034] The beneficial effects of the embodiments of this utility model are as follows:

[0035] In embodiments of this utility model, the battery cluster includes multiple battery cells, a battery support, and a junction box. Multiple accommodating spaces are formed within the battery support. Each accommodating space includes a functional cavity and a battery cavity located at the end of the battery support. Multiple battery cells are respectively disposed within the multiple battery cavities, and the junction box is disposed within the functional cavity. By integrating the junction box inside the battery support, the battery cluster wiring can be hidden within the battery support, improving the appearance of the battery cluster. Simultaneously, the junction box includes a housing, a high-voltage circuit assembly, and a low-voltage circuit assembly. By integrating the high-voltage circuit assembly and the low-voltage circuit assembly into a single junction box, and integrating the junction box and multiple battery cells onto a single battery support, the space occupied by the junction box is reduced, resulting in a compact and rational battery cluster structure and improved energy density. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a first axonometric view of a battery cluster provided in an embodiment of this utility model;

[0038] Figure 2 This is a second axonometric view of the battery cluster provided in an embodiment of the present invention;

[0039] Figure 3 This is a third axonometric view of the battery cluster provided in an embodiment of the present invention;

[0040] Figure 4 This is a fourth axonometric view of the battery cluster provided in an embodiment of the present invention;

[0041] Figure 5 This is a front view of a battery cluster provided in an embodiment of this utility model;

[0042] Figure 6 yes Figure 5 A magnified schematic diagram of part A in the middle;

[0043] Figure 7 yes Figure 5 A magnified schematic diagram of part B in the middle;

[0044] Figure 8 This is a schematic diagram of the junction box provided in an embodiment of the present utility model;

[0045] Figure 9 yes Figure 8A schematic diagram of the internal partitions of the junction box in the diagram;

[0046] Figure 10 This is the fifth axonometric view of the battery cluster provided in the embodiment of this utility model;

[0047] Figure 11 yes Figure 10 A magnified schematic diagram of part C in the middle.

[0048] The names of the components corresponding to the corresponding reference numerals in the figure are:

[0049] 100 battery clusters;

[0050] 1 battery cell; 11 explosion-proof valves;

[0051] 2. Battery bracket; 2a. Accommodation space; 2a1. Battery cavity; 2a2. Functional cavity; 2b. End; 21. Main frame; 22. Frame; 221. Box body; 222. Shelf; 23. Enclosure; 231. Side panel; 232. Baffle; 24. Installation gap;

[0052] 3 Junction box; 31 Box body; 311 High voltage area; 312 Low voltage area; 32 High voltage circuit assembly; 33 Low voltage circuit assembly; 34 First terminal; 35 Second terminal; 36 Third terminal;

[0053] 4. Display components;

[0054] 5. Liquid cooling structure; 51. Liquid cooler; 52. Liquid cooling plate assembly; 521. Liquid cooling plate; 5211. Liquid inlet end; 5212. Liquid outlet end; 53. Liquid cooling pipe assembly; 531. Main liquid inlet pipe; 532. Main liquid return pipe; 533. Liquid cooling branch pipe; 5331. Liquid inlet branch pipe; 5332. Liquid outlet branch pipe;

[0055] 6. Gas collecting tube; 61. End;

[0056] 7 fans; Detailed Implementation

[0057] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0058] In a first aspect, this utility model provides a battery cluster 100. (See also...) Figures 1 to 3 The battery cluster 100 includes multiple battery cells 1, a battery bracket 2, and a junction box 3. Along the length of the battery bracket 2, multiple accommodating spaces 2a are formed side-by-side within the battery bracket 2. Each accommodating space 2a includes at least one functional cavity 2a2 and multiple battery cavities 2a1. The functional cavity 2a2 is located at the end 2b of the battery bracket 2. The junction box 3 includes a housing 31, a high-voltage circuit assembly 32, and a low-voltage circuit assembly 33. The housing 31 contains a high-voltage zone 311 and a low-voltage zone 312. The high-voltage circuit assembly 32 is disposed within the housing 31 and located in the high-voltage zone 311, and is used to electrically connect the multiple battery cells 1 and the inverter. The low-voltage circuit assembly 33 is disposed within the housing 31 and located in the low-voltage zone 312, and is used to electrically connect the high-voltage circuit assembly 32 and the battery management system. The multiple battery cells 1 are respectively disposed within the multiple battery cavities 2a1, and the junction box 3 is disposed within the functional cavity 2a2.

[0059] It is known that in related technologies, the battery bracket has multiple accommodating spaces for placing individual battery cells; at the same time, a high-voltage box and a low-voltage box are separately set outside the battery bracket; and the high-voltage box is connected to the individual battery cells by setting a high-voltage wiring harness, and the low-voltage box is connected to the individual battery cells by setting a low-voltage wiring harness; at this time, the wiring of the battery cluster is exposed outside the battery bracket, and the exposure of the high-voltage and low-voltage wiring harnesses affects the appearance of the battery cluster.

[0060] In the embodiments of this utility model, please refer to Figures 1 to 3 The battery cluster 100 includes multiple battery cells 1, a battery bracket 2, and a junction box 3. The battery bracket 2 has multiple accommodating spaces 2a. Each accommodating space 2a includes a functional cavity 2a2 and a battery cavity 2a1 located at the end 2b of the battery bracket 2. The multiple battery cells 1 are respectively disposed within the multiple battery cavities 2a1, and the junction box 3 is disposed within the functional cavity 2a2. Thus, when a wiring harness is used to connect the junction box 3 and the battery cells 1, the wiring harness is routed from inside the battery bracket 2, allowing the wiring harness of the battery cluster 100 to be hidden within the battery bracket, preventing the wiring harness from being exposed on the outside of the battery bracket 2, thereby improving the overall aesthetics of the battery cluster 100.

[0061] Furthermore, in related technologies, high-voltage and low-voltage boxes are separately installed outside the battery holder, resulting in a large overall space occupied by the battery cluster and a low volumetric energy density. In the embodiments of this utility model, please refer to... Figure 8 and Figure 9The junction box 3 includes a box body 31, a high-voltage circuit assembly 32, and a low-voltage circuit assembly 33. By integrating the high-voltage circuit assembly 32 and the low-voltage circuit assembly 33 into a single junction box 3, the space occupied by the junction box 3 is reduced. Furthermore, by integrating the junction box 3 and multiple battery cells 1 onto a single battery bracket 2, the overall space occupied by the battery cluster 100 is reduced, thereby making the battery cluster 100 structure compact and reasonable, and improving the energy density of the battery cluster 100.

[0062] It is understood that the battery pack 100 is a core component in an energy storage system or electric vehicle, typically composed of multiple battery modules connected in series or parallel. The high-voltage and low-voltage connections of the battery pack 100 are used for transmitting electrical energy and control signals, respectively. The high-voltage circuit assembly 32 is primarily used to transmit the high voltage and high current of the battery pack 100, and is usually the main power output section of the battery pack 100. The high-voltage circuit assembly 32 provides the main power output of the battery pack 100 and connects to inverters, motor controllers, or other electrical equipment. The low-voltage circuit assembly 33 is primarily used to transmit control signals or provide auxiliary power, such as monitoring battery status, communication signals, or powering drive circuits. The low-voltage circuit assembly 33 is mainly used to monitor the status of the battery pack 100 (such as voltage, current, temperature, etc.), provide a communication interface for the BMS (Battery Management System), and control switching elements such as relays and contactors.

[0063] For example, in an energy storage system, the high-voltage circuit assembly 32 connects the battery cluster 100 to the inverter, converting direct current (DC) to alternating current (AC); the low-voltage circuit assembly 33 connects to the battery management system (BMS) and the monitoring system, monitoring the battery status in real time. In a power system, the high-voltage circuit assembly 32 connects the battery cluster 100 to the motor controller, providing power to the drive motor; the low-voltage circuit assembly 33 connects to the BMS and the vehicle control system, monitoring the battery health status and sending control commands.

[0064] In some embodiments, a plurality of battery cells 1 are arranged in sequence, and the junction box 3 is disposed on one side of the plurality of battery cells 1.

[0065] In an exemplary embodiment, along the length of the battery holder 2, the plurality of accommodating spaces 2a include a plurality of battery cavities 2a1 and at least one functional cavity 2a2 located on one side of the plurality of battery cavities 2a1; wherein each battery cell 1 is disposed in one of the battery cavities 2a1 and the junction box 3 is disposed in the functional cavity 2a2.

[0066] This application does not impose specific limitations on the arrangement of the battery holder 2. In some embodiments, the battery holder 2 is arranged horizontally; in some embodiments, the battery holder 2 is arranged vertically along the F1 direction.

[0067] In one exemplary embodiment, please refer to Figures 1 to 3 The battery bracket 2 is set upright, and the length direction of the battery bracket 2 is configured as up and down F1.

[0068] Following the above embodiment where "the battery holder 2 is vertically positioned," this application does not impose specific limitations on the placement of the junction box 3. In some embodiments, the functional cavity 2a2 is located at the top of the battery holder 2 and at the top of the battery cavity 2a1, and the junction box 3 is disposed within the functional cavity 2a2 and above the individual battery cell; in some embodiments, the functional cavity 2a2 is located at the bottom of the battery holder 2 and at the bottom of the battery cavity 2a1, and the junction box 3 is disposed within the functional cavity 2a2 and below the individual battery cell.

[0069] In an exemplary embodiment, the plurality of battery cavities 2a1 are stacked vertically, and the functional cavity 2a2 is located above the plurality of battery cavities 2a1; that is, the plurality of battery cells 1 are stacked vertically at the bottom of the battery bracket 2, and the junction box 3 is stacked on top of the plurality of battery cells 1 and located near the top of the battery bracket 2.

[0070] In one embodiment, please refer to Figure 1 and Figure 2 The battery cluster 100 also includes a display component 4, which is disposed on the outside of the battery bracket 2 and corresponds to the position of the junction box 3. The display component 4 is electrically connected to the low-voltage circuit component 33. That is, the high-voltage circuit component 32 and the low-voltage circuit component 33 are integrated into a junction box 3; at the same time, the display component 4 connected to the low-voltage circuit component 33 is integrated into the battery bracket 2. In this way, the integration of the battery cluster 100 can be further improved, making the structure of the battery cluster 100 compact and reasonable, and improving the energy density of the battery cluster 100.

[0071] It is understood that the aforementioned "display component 4 is disposed on the outside of the battery bracket 2 and corresponds to the position of the junction box 3" means that the junction box 3 is disposed close to the top of the battery bracket 2, thereby making the display component 4 close to the top of the battery bracket 2, which facilitates the user's observation and operation of the display component 4.

[0072] In one embodiment, the junction box 3 further includes a first terminal 34, a second terminal 35, and a third terminal 36 disposed on the box body 31. The first terminal 34 is used to electrically connect the low-voltage circuit assembly 33 and the battery management unit, the second terminal 35 is used to electrically connect the low-voltage circuit assembly 33 and the backup power supply, and the third terminal 36 is used to electrically connect the high-voltage circuit assembly 32 and the centralized monitoring unit.

[0073] Please see Figure 1 , Figures 5 to 7 In one embodiment, the battery cluster 100 further includes a liquid cooling structure 5, which includes a liquid cooler 51, a liquid cooling plate assembly 52, and a liquid cooling pipe assembly 53. The liquid cooler 51 is disposed within one of the functional chambers 2a2 and is located above the junction box 3. The liquid cooling plate assembly 52 includes a plurality of liquid cooling plates 521, each of which corresponds to one of the battery cells 1 and is used to perform liquid cooling heat dissipation on the battery cell 1. The liquid cooling pipe assembly 53 is disposed on the battery bracket 2 and connects the liquid cooler 51 to the plurality of liquid cooling plates 52.

[0074] In an exemplary embodiment, the liquid cooling pipe assembly 53 includes a liquid inlet main pipe 531, a liquid return main pipe 532, and a plurality of liquid cooling branch pipes 533; one end of the liquid inlet main pipe 531 is connected to the liquid outlet of the liquid cooler 51; one end of the liquid return main pipe 532 is connected to the liquid return port of the liquid cooler 51; the plurality of liquid cooling branch pipes 533 are respectively arranged corresponding to the plurality of liquid cooling plates 521, each liquid cooling branch pipe 533 includes a liquid inlet branch pipe 5331 and a liquid outlet branch pipe 5332, the liquid inlet branch pipe 5331 is connected to the liquid inlet main pipe 531 and the liquid inlet end 5211 of the liquid cooling plate 521, and the liquid outlet branch pipe 5332 is connected to the liquid return main pipe 532 and the liquid outlet end 5212 of the liquid cooling plate 521.

[0075] In other words, each battery cell 1 is provided with a liquid cooling plate 521 for liquid cooling heat dissipation. The liquid cooling plate 521 has a liquid inlet end 5211 and a liquid outlet end 5212. A liquid cooler 51 and a liquid cooling pipe assembly 53 are provided on the battery bracket 2. The liquid outlet of the liquid cooler 51 is connected to the liquid inlet main pipe 531, and the coolant flows into the liquid inlet main pipe 531. The liquid inlet branch pipe 5331 connects the liquid inlet main pipe 531 and the liquid inlet end 5211 of the liquid cooling plate 521, so that the coolant can flow into the liquid cooling plate 521. After heat exchange with the battery cell 1, the coolant flows from the liquid outlet end 5212 of the liquid cooling plate 521 through the liquid outlet branch pipe 5332 to the liquid return main pipe 532. The coolant flows from the liquid return main pipe 532 back into the liquid cooler 51 through the liquid return port of the liquid cooler 51. In this way, liquid cooling circulation of the battery cell 1 is realized.

[0076] Furthermore, two functional cavities 2a2 are provided, and the two functional cavities 2a2 are stacked on top of the plurality of battery cavities 2a1; the liquid cooler 51 and the junction box 3 are respectively disposed in the two functional cavities 2a2, and the liquid cooler 51 is located above the junction box 3. By integrating the liquid cooler 51, the liquid cooling plate assembly 52, and the liquid cooling pipe assembly 53 onto the battery bracket 2, the battery cluster 100 structure is arranged compactly and reasonably, thereby improving the energy density of the battery cluster 100.

[0077] This application does not impose specific limitations on the structure of the battery holder 2.

[0078] In one embodiment, the battery holder 2 includes a main frame 21 and a plurality of frames 22; the main frame 21 is upright; the plurality of frames 22 are disposed within the main frame 21 and spaced apart along the vertical direction F1; each frame 22 includes a frame 221 connecting the main frame 21 and a shelf 222 disposed on the frame 221; an accommodating space 2a is formed between two adjacent frames 22 and the main frame 21; wherein the battery cell 1 and the junction box 3 are respectively located in the corresponding accommodating space 2a and placed on the corresponding shelf 222.

[0079] Meanwhile, the battery cluster 100 also includes multiple liquid cooling plates 521, liquid inlet pipe 531 and liquid return pipe 532. The liquid cooling plates 521 are located in the battery cavity 2a1 and are disposed between the battery cell 1 and the corresponding storage plate 222. The liquid inlet pipe 531 and the liquid return pipe 532 are disposed on the main frame 21 and both extend vertically to F1.

[0080] In one embodiment, the battery bracket 2 further includes a surrounding plate 23, which is disposed on the outside of the main frame 21 and forms an installation gap 24 with the main frame 21; the liquid inlet main pipe 531 and the liquid return main pipe 532 are disposed on the surrounding plate 23 and located within the installation gap 24. The integrated installation of the liquid cooling pipe assembly 53 via the surrounding plate 23 not only makes the battery cluster 100 structure compact and reasonable, improving the energy density of the battery cluster 100, but also encapsulates and protects the liquid cooling pipe assembly 53.

[0081] In one exemplary embodiment, please refer to Figures 2 to 4 The enclosure 23 includes two side panels 231 and multiple baffles 232. The two side panels 231 are disposed on the outside of the main frame 21 and are arranged side by side with intervals. Each side panel 231 extends vertically. The multiple baffles 232 are arranged side by side vertically. Each baffle 232 connects to the two side panels 231 to form the installation gap 24 on the outside of the main frame 21. Each baffle 232 corresponds to one battery cell 1. The liquid inlet pipe 531 and the liquid return pipe 532 are respectively disposed on the two side panels 231. The multiple baffles 232, each connected to the two side panels 231, expose the battery cell 1 when the baffles 232 are removed, thus facilitating user operation.

[0082] In one embodiment, please refer to Figure 10 and Figure 11 Each of the battery cells 1 is provided with an explosion-proof valve 11, and the multiple explosion-proof valves 11 of the multiple battery cells 1 are located on the same side of the battery bracket 2; the battery cluster 100 also includes a gas collecting pipe 6, which is disposed on the battery bracket 2 and extends along the length of the battery bracket 2, and the gas collecting pipe 6 is connected to the multiple explosion-proof valves 11.

[0083] It is understood that the battery's explosion-proof valve 11 (Pressure Relief Valve or Safety Valve) is a safety protection device inside the battery, used to release excess pressure when the internal pressure of the battery abnormally increases, preventing the battery from exploding or rupturing due to overpressure. The explosion-proof valve 11 is a one-way valve, typically installed on the top or side of the battery casing. When the internal pressure of the battery exceeds a preset safety threshold, the explosion-proof valve 11 automatically opens to release the pressure, thereby preventing the battery from exploding or leaking due to overpressure.

[0084] When the internal pressure of the battery exceeds a preset safety threshold, the explosion-proof valve 11 will automatically open to release the pressure, thereby releasing harmful gases into the battery cluster 100. By setting the gas collection pipe 6, which is set on the battery bracket 2 and extends along the length of the battery bracket 2, and is connected to multiple explosion-proof valves 11, the gas released from the explosion-proof valves 11 is concentrated in the gas collection pipe 6 and discharged in a centralized manner, thereby ensuring a good internal environment for the battery cluster 100.

[0085] Please also see Figure 4 The battery cluster 100 also includes a fan 7, which is disposed on one end 61 of the gas collecting pipe 6 and is used to extract the gas in the gas collecting pipe 6; in this way, it can be ensured that when the explosion-proof valve 11 automatically opens to release pressure, the released harmful gas can be smoothly discharged from the gas collecting pipe 6.

[0086] Secondly, embodiments of this application also provide an energy storage system. The energy storage system includes a battery cluster 100. It should be noted that the battery cluster 100 is configured as described above, that is, the battery cluster 100 has all the technical features of the battery cluster 100 described above, that is, the energy storage system includes all embodiments of the battery cluster 100 described above; further details will not be provided here.

[0087] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A battery cluster, characterized in that, include: Multiple battery cells; A battery holder, along its length, has multiple accommodating spaces arranged side-by-side, each space including at least one functional cavity and multiple battery cavities, the functional cavity being located at one end of the battery holder; and... A junction box includes a box body, a high-voltage circuit assembly, and a low-voltage circuit assembly. A high-voltage area and a low-voltage area are formed within the box body. The high-voltage circuit assembly is disposed within the box body and located in the high-voltage area, and is used to electrically connect multiple battery cells and an inverter. The low-voltage circuit assembly is disposed within the box body and located in the low-voltage area, and is used to electrically connect the high-voltage circuit assembly and a battery management system. The battery cells are respectively disposed in the battery cavities, and the junction box is disposed in the functional cavity.

2. The battery cluster according to claim 1, characterized in that, The battery bracket is installed vertically, and the length of the battery bracket is configured in the up-down direction. The plurality of battery cavities are stacked vertically, and the functional cavity is located on top of the plurality of battery cavities.

3. The battery cluster according to claim 2, characterized in that, The battery cluster also includes a display component, which is disposed on the outside of the battery bracket and corresponds to the position of the junction box. The display component is electrically connected to the low-voltage circuit component.

4. The battery cluster according to claim 1, characterized in that, The junction box further includes a first terminal, a second terminal, and a third terminal disposed on the box body. The first terminal is used to electrically connect the low-voltage circuit assembly and the battery management unit, the second terminal is used to electrically connect the low-voltage circuit assembly and the backup power supply, and the third terminal is used to electrically connect the high-voltage circuit assembly and the centralized monitoring unit.

5. The battery cluster according to claim 1, characterized in that, The battery cluster further includes a liquid cooling structure, the liquid cooling structure comprising: A liquid cooler is disposed within one of the aforementioned functional chambers and located above the junction box; A liquid cooling plate assembly includes multiple liquid cooling plates, each liquid cooling plate corresponding to one of the battery cells, for liquid cooling heat dissipation of the battery cells; and... A liquid cooling pipe assembly is disposed on the battery bracket, and the liquid cooling pipe assembly connects the liquid cooler and the plurality of liquid cooling plates.

6. The battery cluster according to claim 5, characterized in that, The liquid cooling pipe assembly includes: A liquid inlet main pipe, one end of which is connected to the liquid outlet of the liquid cooler; A liquid return main pipe, one end of which is connected to the liquid return port of the liquid cooler; and... Multiple liquid-cooled branch pipes are respectively arranged corresponding to multiple liquid-cooled plates. Each liquid-cooled branch pipe includes an inlet branch pipe and an outlet branch pipe. The inlet branch pipe is connected to the inlet main pipe and the inlet end of the liquid-cooled plate, and the outlet branch pipe is connected to the return main pipe and the outlet end of the liquid-cooled plate.

7. The battery cluster according to any one of claims 2-6, characterized in that, The battery bracket includes: The main frame is erected vertically; and, Multiple frames are disposed within the main frame and spaced apart vertically. Each frame includes a frame connecting to the main frame and a shelf disposed on the frame. An accommodating space is formed between two adjacent frames and the main frame. The battery cell and the junction box are respectively located in the corresponding accommodating space and placed on the corresponding shelf.

8. The battery cluster according to claim 7, characterized in that, The battery cluster also includes multiple liquid cooling plates, a liquid inlet pipe, and a liquid return pipe. The liquid cooling plates are located inside the battery cavity and are disposed between the battery cells and the corresponding storage plates. The liquid inlet pipe and the liquid return pipe are disposed on the main frame and both extend vertically.

9. The battery cluster according to claim 8, characterized in that, The battery bracket also includes a surrounding plate, which is disposed on the outside of the main frame and forms an installation gap with the main frame; The inlet pipe and the return pipe are mounted on the enclosure and located within the installation gap.

10. The battery cluster according to claim 9, characterized in that, The enclosure includes two side panels and multiple baffles. The two side panels are disposed on the outside of the main frame and are arranged side by side with intervals. Each side panel extends vertically. The multiple baffles are arranged side by side vertically. Each baffle connects the two side panels to form the installation gap on the outside of the main frame. Each baffle corresponds to one accommodating space. The liquid inlet pipe and the liquid return pipe are respectively disposed on the two side plates.

11. The battery cluster according to claim 1, characterized in that, Each of the battery cells is provided with an explosion-proof valve, and the multiple explosion-proof valves of the multiple battery cells are located on the same side of the battery bracket; The battery cluster also includes a gas collecting pipe, which is disposed on the battery bracket and extends along the length of the battery bracket. The gas collecting pipe is connected to a plurality of the explosion-proof valves.

12. The battery cluster according to claim 11, characterized in that, The battery cluster also includes a fan, which is disposed at one end of the gas collecting pipe and is used to extract gas from the gas collecting pipe.

13. An energy storage system, characterized in that, Includes the battery cluster as described in any one of claims 1-12.

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