Energy storage device

Abstract

The utility model discloses energy storage equipment, and belongs to the technical field of energy storage. The energy storage equipment comprises a box body, a plurality of battery clusters and a liquid cooling system, a plurality of cabins are formed in the box body, the plurality of cabins comprise at least one comprehensive cabin and a plurality of battery cabins which are sequentially arranged at intervals in the length direction of the box body, the plurality of battery clusters are installed in the plurality of battery cabins, and the liquid cooling system comprises a liquid cooling electrical assembly and a liquid cooling pipe set. The liquid cooling electrical assembly is installed in the at least one comprehensive cabin, one end of the liquid cooling pipe group is located in the at least one comprehensive cabin and is communicated with the liquid cooling electrical assembly, the other end of the liquid cooling pipe group is located in the plurality of battery cabins and is communicated with the plurality of battery clusters, and the layout mode reduces space waste, so that the whole equipment is more compact and efficient; a large amount of space is saved, the installation space of the battery pack is prevented from being reduced, and the capacity of the whole energy storage equipment can be improved.

Description

Technical Field

[0001] The present application belongs to the field of energy storage technology, and in particular, relates to an energy storage device. Background Art

[0002] As the energy storage industry's requirements for high-rate charging and discharging increase, liquid-cooled energy storage is currently a key direction of thermal management technology for battery energy storage systems. At the same time, the requirements for energy density per unit space in battery energy storage systems are also increasing.

[0003] In existing battery energy storage systems, since the liquid cooling systems are all placed in a cabin, the cabin needs to have a larger space size, which will correspondingly reduce the installation space of the battery pack, resulting in the energy density of the energy storage system being limited. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an energy storage device, which aims to distribute the liquid-cooled electrical components and liquid-cooled pipe groups of the liquid cooling system in different compartments to avoid reducing the installation space of the battery pack and limiting the energy density of the energy storage system.

[0005] In a first aspect, the present application provides an energy storage device, comprising:

[0006] A box body, wherein a plurality of compartments are formed in the box body, and the plurality of compartments include at least one integrated compartment and a plurality of battery compartments which are sequentially spaced apart along the length direction of the box body;

[0007] A plurality of battery clusters, wherein the plurality of battery clusters are installed in the plurality of battery compartments;

[0008] The liquid cooling system includes a liquid cooling electrical component and a liquid cooling pipe group, wherein the liquid cooling electrical component is installed in at least one of the integrated compartments, one end of the liquid cooling pipe group is located in at least one of the integrated compartments and is connected to the liquid cooling electrical component, and the other end of the liquid cooling pipe group is located in a plurality of the battery compartments and is connected to a plurality of the battery clusters.

[0009] According to the energy storage device of the present application, the setting of multiple compartments enables each compartment to be installed, maintained and upgraded independently, thereby improving the scalability and flexibility of the system. Multiple compartments are arranged in sequence along the length direction of the box body, which effectively utilizes the internal space of the box body. This layout method reduces the waste of space and makes the overall equipment more compact and efficient. The battery cluster is installed in the battery compartment and separated from the liquid-cooled electrical components, which enhances the safety of the system. In the battery compartment, the battery cluster can be effectively isolated and protected, reducing potential safety risks. The liquid cooling system adopts a combination of liquid-cooled electrical components and liquid-cooled pipe groups to achieve efficient cooling of the battery cluster. In addition, the liquid-cooled electrical component is installed in at least one of the integrated compartments, one end of the liquid-cooled pipe group is in at least one of the integrated compartments and is connected to the liquid-cooled electrical component, and the other end of the liquid-cooled pipe group is in multiple battery compartments and is connected to multiple battery clusters, so that the liquid-cooled electrical component and the liquid-cooled pipe group can be in different compartments, realizing the distributed layout of the liquid cooling system, saving a lot of space, avoiding the reduction of the installation space of the battery pack, and improving the capacity of the entire energy storage device. Since the liquid-cooled electrical components and liquid-cooling pipe groups are installed in the integrated cabin and the battery cabin respectively, maintenance work is more convenient. Maintenance personnel can enter the corresponding cabins for inspection and repair respectively, reducing the difficulty and complexity of maintenance. The liquid cooling system transports coolant to each battery cluster through the liquid cooling pipe group, achieving uniform thermal management of the battery cluster. This design reduces the temperature difference inside the battery cluster, prevents the occurrence of local overheating, and prolongs the service life of the battery.

[0010] According to one embodiment of the present application, the box body is provided with an air inlet and an air outlet connected to the battery compartment, and at least one of the air inlet and the air outlet is located at the top of the box body.

[0011] According to an embodiment of the present application, the air inlet is extended along the length direction of the box body.

[0012] According to one embodiment of the present application, a plurality of the air inlets and / or the air outlets are provided, and the plurality of the air inlets and / or the plurality of the air outlets are provided in a one-to-one correspondence with the plurality of the battery compartments.

[0013] According to an embodiment of the present application, the plurality of air inlets arranged at intervals along the length direction of the box together constitute an air inlet assembly, at least two air inlet assemblies are provided, and at least two air inlet assemblies are arranged at intervals along the width direction of the box; and / or,

[0014] The plurality of air inlets and / or the plurality of air outlets are arranged at intervals along the length direction of the box.

[0015] According to an embodiment of the present application, the plurality of air outlets arranged along the length direction of the box together constitute an air outlet assembly, at least one air outlet assembly is provided, and at least one air outlet assembly is located between two adjacent air inlet assemblies.

[0016] According to one embodiment of the present application, the air inlet is connected to a filter channel; and / or,

[0017] The air outlet is also equipped with a fan, which is used to discharge the gas in the multiple battery compartments.

[0018] According to one embodiment of the present application, the liquid cooling tube group includes:

[0019] A main pipe, one end of which is connected to the liquid-cooled electrical component, the main pipe comprising an input main pipe section and an output main pipe section both extending along the length direction of the box, the input main pipe section and the output main pipe section being arranged at the top of the plurality of battery clusters;

[0020] A plurality of branch units are provided corresponding to the plurality of battery clusters, each of the plurality of branch units comprises an input branch pipeline and an output branch pipeline, one end of each input branch pipeline and one end of each output branch pipeline are connected to the corresponding battery cluster, the other end of each input branch pipeline is connected to the input main pipe section, and the other end of each output branch pipeline is connected to the output main pipe section.

[0021] According to one embodiment of the present application, each of the output branch pipes is used to output the coolant in the corresponding battery cluster, and at least a portion of the output branch pipe is arranged corresponding to the air outlet; and / or,

[0022] Each of the input branch pipelines is used to transport coolant to the corresponding battery cluster, and the output branch pipeline is at least partially arranged corresponding to the air inlet.

[0023] According to an embodiment of the present application, the input main pipe section and the output main pipe section are both arranged at intervals along the width direction of the box body.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a schematic diagram of the structure of the energy storage device provided in the embodiment of the present application;

[0027] Figure 2 is a schematic top view of an energy storage device provided in an embodiment of the present application;

[0028] Figure 3 yes Figure 1 Schematic diagram of some structures of energy storage equipment;

[0029] Figure 4 yes Figure 3 A schematic top view of the energy storage device;

[0030] Figure 5 yes Figure 3 Right side view of the energy storage device.

[0031] Reference numerals:

[0032] Energy storage device 100;

[0033] Box body 110, cabin 111, integrated cabin 1111, battery cabin 1112, air inlet 112, air outlet 113;

[0034] Battery cluster 120;

[0035] Liquid-cooled electrical assembly 131, liquid-cooled pipe group 132, main pipe 1321, input main pipe section 13211, output main pipe section 13212, branch unit 1322, input branch pipe 13221, output branch pipe 13222;

[0036] Filter 140;

[0037] Fan 150. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0039] Reference below Figure 1-Figure 5 An energy storage device according to an embodiment of the present application is described.

[0040] Reference Figures 1 to 3 The energy storage device 100 includes a housing 110 , a plurality of battery clusters 120 , and a liquid cooling system.

[0041] A plurality of compartments 111 are formed in the box body 110, and the plurality of compartments 111 include at least one integrated compartment 1111 and a plurality of battery compartments 1112 which are sequentially spaced along the length direction of the box body 110. By designing the energy storage device 100 to have a plurality of compartments 111, a modular design can be achieved. Separately designing the integrated compartment 1111 and the battery compartment 1112 can reduce the impact of battery failure on the entire device. When a compartment 111 needs maintenance or battery replacement, the normal operation of other compartments 111 will not be affected. By sequentially spaced along the length direction of the box body 110 at least one integrated compartment 1111 and a plurality of battery compartments 1112, the space of the box body 110 can be fully utilized to achieve a higher space utilization rate.

[0042] A plurality of the battery clusters 120 are installed in a plurality of the battery compartments 1112, which helps to achieve a larger energy storage capacity in a limited space and improves the overall energy storage efficiency of the energy storage device 100. The battery cluster 120 is an integral unit, which is convenient for centralized management and monitoring. This includes monitoring of the battery status, charge and discharge control, and maintenance operations. Through centralized management, the safety and performance stability of the battery can be more effectively guaranteed. Since the battery cluster 120 is modularly designed, the number of battery clusters 120 can be easily increased or decreased as needed, thereby achieving capacity expansion of the energy storage device 100. At the same time, when a battery cluster 120 has a problem, it can be replaced or repaired independently without affecting the normal operation of other battery clusters 120. The design of the battery cluster 120 usually takes into account thermal isolation and electrical isolation between batteries, which helps to reduce the mutual influence between batteries and reduce the risk of battery failures causing chain reactions. In addition, by installing the battery cluster 120 in a dedicated battery compartment 1112, additional safety measures such as gas detection and ventilation systems can be taken to further ensure the safety of battery operation. The design of the battery cluster 120 helps to reduce the number of cables and connectors, reduce energy loss and system complexity, and thus help to improve the overall efficiency of the energy storage device 100 and reduce maintenance costs.

[0043] The liquid cooling system includes a liquid cooling electrical component 131 and a liquid cooling pipe group 132. The liquid cooling electrical component 131 is installed in at least one of the integrated cabins 1111. One end of the liquid cooling pipe group 132 is in at least one of the integrated cabins 1111 and is connected to the liquid cooling electrical component 131. The other end of the liquid cooling pipe group 132 is in multiple battery cabins 1112 and is connected to multiple battery clusters 120. In this way, the liquid cooling system can effectively cool the battery cluster 120 through the coordinated work of the liquid cooling electrical component 131 and the liquid cooling pipe group 132. The coolant circulates under the drive of the liquid cooling electrical component 131, and takes away the heat from the battery cluster through the liquid cooling pipe group 132, thereby achieving an efficient cooling effect. The design of the liquid cooling pipe group 132 allows the coolant to be evenly distributed to each battery cluster, ensuring that each battery can be fully cooled. This helps to reduce the temperature difference inside the battery cluster 120, prevent the occurrence of local overheating, and improve the service life and performance of the battery. The liquid cooling system reduces the operating temperature of the battery cluster 120 through effective cooling and uniform heat distribution, thereby reducing the risk of thermal runaway of the battery. This improves the reliability of the entire energy storage device 100 and ensures the safe and stable operation of the device. Compared with the traditional air cooling system, the liquid cooling system has higher cooling efficiency and can reduce energy consumption. At the same time, because the liquid cooling system uses circulating coolant for cooling, it avoids the noise and dust pollution caused by a large amount of air flow, which is more environmentally friendly.

[0044] In addition, installing the liquid-cooled electrical components 131 in the integrated cabin 1111 can realize centralized management and maintenance of electrical components. This simplifies the structure of the equipment, reduces the number of cables and connectors, and reduces the complexity and failure rate of the system. The design of the integrated cabin 1111 can isolate the electrical components from the battery cabin 1112, which helps to reduce the potential impact of the electrical components on the battery cluster 120 and improve the safety of the equipment. In addition, the integrated cabin 1111 can also be equipped with a safety monitoring and control system to monitor and warn the operating status of the equipment in real time to ensure the safe operation of the equipment. Since the liquid-cooled electrical components 131 and the liquid-cooled pipe group are in different cabins, the liquid cooling system adopts a distributed layout, which saves a lot of space, avoids reducing the installation space of the battery pack, and can increase the capacity of the entire energy storage device 100.

[0045] It should be noted that the liquid cooling system is usually equipped with a monitoring device that can monitor the temperature, flow rate and other parameters of the coolant in real time. This allows operation and maintenance personnel to promptly discover and deal with potential problems and reduce the risk of equipment failure. At the same time, the maintenance of the liquid cooling pipe group 132 is relatively simple and easy to clean and replace. In addition, the liquid cooling electrical component 131 may include an electric water pump, a compressor, a condenser or an evaporator, etc. Specifically, this application does not limit this.

[0046] According to the energy storage device 100 of the present application, the arrangement of multiple compartments 111 enables each compartment 111 to be independently installed, maintained and upgraded, thereby improving the scalability and flexibility of the system. Multiple compartments 111 are arranged in sequence along the length direction of the box body 110, effectively utilizing the internal space of the box body 110. This layout reduces the waste of space and makes the overall equipment more compact and efficient. The battery cluster 120 is installed in the battery compartment 1112 and separated from the liquid-cooled electrical components 131, thereby enhancing the safety of the system. In the battery compartment 1112, the battery cluster 120 can be effectively isolated and protected, reducing potential safety risks. The liquid cooling system adopts a combination of liquid-cooled electrical components 131 and liquid-cooled pipe groups 132 to achieve efficient cooling of the battery cluster 120. The liquid-cooled electrical component 131 is installed in at least one of the integrated cabins 1111, one end of the liquid-cooled pipe group 132 is in at least one of the integrated cabins 1111 and is connected to the liquid-cooled electrical component 131, and the other end of the liquid-cooled pipe group 132 is in multiple battery cabins 1112 and is connected to multiple battery clusters 120, so that the liquid-cooled electrical component 131 and the liquid-cooled pipe group 132 are in different cabins 111, and the liquid-cooled system adopts a distributed layout, which saves a lot of space, avoids the reduction of the installation space of the battery pack, and can improve the capacity of the entire energy storage device 100. Since the liquid-cooled electrical component 131 and the liquid-cooled pipe group 132 are respectively installed in the integrated cabin and the battery cabin 1112, the maintenance work is more convenient. Maintenance personnel can enter the corresponding cabins 111 for inspection and maintenance, which reduces the difficulty and complexity of maintenance. The liquid cooling system transports the coolant to each battery cluster 120 through the liquid-cooled pipe group 132, realizing uniform thermal management of the battery cluster 120. This design reduces the temperature difference inside the battery cluster 120, prevents the occurrence of local overheating, and prolongs the service life of the battery.

[0047] Reference Figure 1 and Figure 2In one embodiment, the box 110 is provided with an air inlet 112 and an air outlet 113 connected to the battery compartment 1112, and at least one of the air inlet 112 and the air outlet 113 is located at the top of the box 110. In this way, the air inlet 112 or the air outlet 113 is arranged at the top of the box 110, which not only saves space occupation, increases the capacity of the entire energy storage device, but also increases the air inlet and / or air outlet area, can improve the cooling efficiency, and can bear a larger discharge rate requirement. At the same time, it can meet the heat dissipation of more battery cells and effectively improve the competitiveness of products. It also helps to utilize the principle of natural convection. In most cases, the density of cold air is larger and tends to sink, while the density of hot air is smaller and tends to rise. Therefore, setting the air inlet 112 at the top can more easily introduce cold air, and setting the air outlet 113 at the top helps to discharge hot air, thereby enhancing the natural convection effect in the entire box 110. By inletting or outleting at the top, the uniform distribution of temperature in the box 110 can be more effectively achieved. Cold air enters from the top, and after passing through heat sources such as the battery cluster 120, hot air is exhausted from the top, which helps to reduce temperature gradients and make the temperature inside the entire box 110 more uniform. The air inlet 112 and / or the air outlet 113 are set at the top of the box 110 to facilitate installation and maintenance. The space at the top is generally easier to access and does not require additional climbing or bending, thereby simplifying the installation and maintenance process. By setting the air outlet 113 at the top, hot air can be more easily discharged from the box 110, reducing the residence time of the hot air inside the box 110. This helps to improve heat dissipation efficiency and ensure that the energy storage equipment can maintain a stable temperature even when operating at high load.

[0048] It should be noted that when the air outlet 113 is placed on the top, the principle of air temperature and density can be used, that is, hot air rises due to its low density, and cold air sinks due to its high density. In this way, the hot air can be directly lifted into the air after being discharged, effectively preventing the hot air from being sucked into the cold air duct again, further ensuring the stable operation of the energy storage device 100.

[0049] Reference Figure 1 and Figure 2In one embodiment, the air inlet 112 is extended along the length direction of the box body 110. In this way, when the air inlet 112 extends along the length direction of the box body 110, air can enter the interior of the box body 110 more evenly, thereby providing more uniform air flow for each battery compartment 1112. This helps to ensure that each battery cluster 120 can be fully cooled and avoid the occurrence of local overheating. Since the air inlet 112 extends longer, more air flow can be introduced. This increases the contact area and time between the air and the battery cluster 120, thereby improving the cooling efficiency. More air flow means faster heat transfer and faster heat dissipation, which helps to maintain the battery within a suitable operating temperature range. When the air inlet 112 extends along the length direction of the box body 110, the air flow is smoother and the noise generated by the air flow is reduced. This is very important for improving the quietness of the operation of the energy storage device 100 and the comfort of the user.

[0050] Reference Figure 1 and Figure 2 In one embodiment, the air inlet 112 and / or the air outlet 113 are provided in plurality, and are provided one by one with the plurality of battery compartments. Thus, the design of the plurality of air inlets 112 and / or the plurality of air outlets 113 can provide more air circulation channels, thereby enhancing the flow of air inside the box 110. This design helps to ensure that air can pass through each battery compartment 1112 evenly and quickly, more effectively taking away the heat generated by the battery and improving the heat dissipation effect. The design of the plurality of air inlets 112 and / or the plurality of air outlets 113 can reduce the impact of the failure of a single air inlet 112 or air outlet 113 on the entire system. Even if a problem occurs in a certain air inlet 112 or air outlet 113, the other air inlets 112 and air outlets 113 can still work normally to ensure the normal operation of the system. By reasonably arranging the plurality of air inlets 112 and / or the plurality of air outlets 113, the air flow path can be optimized and the noise and vibration generated when the air flows can be reduced. This helps to improve the quietness of the operation of the device and the comfort of the user.

[0051] In one embodiment, the plurality of air inlets and / or the plurality of air outlets are arranged at intervals along the length direction of the box body, which helps to reduce the temperature gradient between the battery compartments 1112. By arranging the air inlets and air outlets 113 at different positions, it is possible to ensure that the temperature of each area inside the box body 110 is more uniform, reducing the impact of temperature differences on battery performance.

[0052] Reference Figure 1 and Figure 2In one embodiment, a plurality of air inlets 112 arranged at intervals along the length direction of the housing 110 together constitute an air inlet assembly, and at least two air inlet assemblies are provided, and at least two air inlet assemblies are arranged at intervals along the width direction of the housing 110. In this way, a plurality of air inlet assemblies are arranged at intervals in the width direction of the housing 110, so that air can enter the internal space of the housing 110 more evenly. Each air inlet assembly includes a plurality of air inlets 112 arranged at intervals along the length direction, which helps to ensure that air can be evenly distributed to each battery compartment 1112, thereby more effectively taking away the heat generated by the battery. Since a plurality of air inlet assemblies are distributed at different positions of the housing 110, they can work together to improve the heat dissipation efficiency. This design allows more air flow to enter the housing 110, thereby accelerating the heat transfer and heat dissipation process, and helps to maintain the battery within a suitable operating temperature range. Designing the air inlet assembly as an independent unit and arranging it at intervals in the width direction of the housing 110 can enhance the structural stability of the entire housing 110. This layout helps to disperse stress and reduce the risk of deformation or damage caused by temperature changes or external impacts. Since there are multiple air intake components distributed in different locations, even if one component fails, the other components can still work normally, thus ensuring that the overall operation of the equipment is not affected. This redundant design helps to improve the reliability and stability of the equipment.

[0053] Reference Figure 1 and Figure 2 In one embodiment, the plurality of air outlets 113 arranged along the length direction of the housing 110 together constitute an air outlet assembly, at least one of the air outlet assemblies is provided, and at least one of the air outlet assemblies is located between two adjacent air inlet assemblies. Thus, by arranging the air outlet assembly between two adjacent air inlet assemblies, the air flow in the housing 110 can be organized more effectively. This design can ensure that after the air enters the housing 110 from the air inlet assembly, it passes through the battery compartment 1112 to take away the heat, and then is discharged from the air outlet assembly to form a directional airflow path, thereby improving the heat dissipation efficiency. Placing the air outlet assembly between the air inlet assemblies can avoid direct interference between the air inlet and the air outlet. This can ensure that the airflow between the air inlet and the air outlet is smoother, reduce the formation of turbulence and eddies, thereby reducing energy loss and improving the heat dissipation effect.

[0054] Reference Figure 1 and Figure 2In one embodiment, the air inlet 112 is connected to a filter channel, so that the filter channel can effectively block dust, dirt and other impurities in the air and prevent them from entering the energy storage device 100 through the air inlet 112. This helps to protect the battery and other electrical components inside the device from pollution and damage, and prolong the service life of the device. Although the filter channel can block impurities, it still allows air to circulate. Provide the necessary cooling effect for the battery and other components. This design balances the needs of dust prevention and ventilation to ensure that the device is not hindered during normal operation. By filtering out impurities in the air, the filter channel can improve the quality of air entering the inside of the device. This is essential for maintaining the normal operation of the device and protecting the performance of the battery. Clean air helps reduce contamination and corrosion on the surface of the battery and keep it in good working condition. By preventing dust and impurities from entering the inside of the device, the filter channel can reduce the maintenance cost of the device. It can prevent equipment failure or performance degradation caused by dust accumulation, thereby avoiding frequent cleaning and maintenance work. The presence of the filter channel can reduce equipment failures caused by external environmental factors (such as dust, dirt, etc.). By keeping the inside of the device clean and stable, it helps to enhance the reliability and stability of the device and improve the overall performance of the device.

[0055] It should be noted that there are many ways to form a filter channel. For example, in an embodiment of the present application, the air inlet is installed with a filter screen 140, and the filter screen 140 forms the filter channel. Of course, in other embodiments, the filter channel can also be formed by other methods. Specifically, the present application does not limit this.

[0056] Reference Figure 1 and Figure 2In one embodiment, the air outlet 113 is also equipped with a fan 150, which is used to discharge the gas in the multiple battery compartments 1112. In this way, the fan 150 provides the ability to actively dissipate heat, and can discharge the hot air in the battery compartment 1112 more quickly than natural convection heat dissipation. This helps to maintain the battery within a suitable operating temperature range, thereby improving the performance and life of the battery. The fan 150 can generate a directional airflow to take the heat directly out of the battery compartment 1112 and discharge it through the air outlet 113. This directional airflow is more effective than natural convection, which can significantly improve the heat dissipation efficiency and reduce the risk of battery failure due to overheating. The fan 150 can adjust the speed according to the temperature and environmental conditions in the battery compartment 1112, thereby providing heat dissipation effects of different intensities. This highly adaptable design enables the energy storage device 100 to maintain stable performance in various working scenarios. In a large energy storage device 100, the temperature in the battery compartment 1112 may form a temperature stratification due to the rise of hot air. The use of the fan 150 can break up this stratification and ensure a more uniform temperature distribution throughout the battery compartment 1112. By actively controlling the heat discharge, the fan 150 helps reduce temperature fluctuations within the battery compartment 1112, thereby improving the reliability of the entire energy storage device 100. This is critical to ensuring the stability and safety of the device during long-term operation.

[0057] It should be noted that the fan 150 is usually equipped with a monitoring system that can detect its operating status and the temperature in the battery compartment 1112 in real time. This allows operation and maintenance personnel to promptly discover and deal with potential problems and reduce the risk of equipment failure. In addition, the maintenance of the fan 150 is relatively simple and easy to clean and replace.

[0058] Reference Figures 3 to 5 In one embodiment, the liquid cooling pipe group includes a main line 1321 and a plurality of branch units 1322 .

[0059] One end of the main pipe 1321 is connected to the liquid-cooled electrical component 131. The main pipe 1321 includes an input main pipe section 13211 and an output main pipe section 13212, both of which are extended along the length direction of the box 110. The input main pipe section 13211 and the output main pipe section are correspondingly arranged at the top of the plurality of battery clusters 120. In this way, the main pipe 1321 is directly connected to the liquid-cooled electrical component 131, ensuring that the coolant has a lower temperature after passing through the liquid-cooled electrical component 131, which is convenient for subsequent cooling of the battery cluster 120. By setting the main pipe 1321 as the input main pipe section 13211 and the output main pipe section 13212 extending along the length direction of the box 110, and correspondingly arranged at the top of the plurality of battery clusters 120, the coolant can be more evenly distributed to each battery cluster 120. This layout reduces temperature differences, avoids local overheating, and thus prolongs the service life of the battery. The design of the branch unit 1322 can be flexibly adjusted according to actual needs and equipment configuration. As the number of battery clusters 120 increases, the number and layout of branch units 1322 may be increased accordingly to meet changing cooling requirements.

[0060] A plurality of branch units 1322 are provided corresponding to a plurality of battery clusters 120, and each branch unit 1322 includes an input branch pipeline 13221 and an output branch pipeline 13222. One end of each input branch pipeline 13221 and one end of each output branch pipeline 13222 are both connected to the corresponding battery cluster 120, and the other end of each input branch pipeline 13221 is connected to the input main pipe section 13211, and the other end of each output branch pipeline 13222 is connected to the output main pipe section 13212. Thus, by corresponding the branch unit 1322 to the battery cluster 120, it can be ensured that each battery cluster 120 obtains an accurate cooling effect. The design of the input branch pipeline 13221 and the output branch pipeline 13222 enables the coolant to flow directly into and out of the battery cluster 120, thereby realizing refined cooling inside the battery cluster 120. This helps to reduce the temperature difference inside the battery cluster 120 and maintain the consistency of battery performance. The design of the branch unit 1322 makes the liquid cooling system more flexible and scalable. When it is necessary to increase or decrease the battery clusters 120, it is only necessary to increase or decrease the number and layout of the branch units 1322 accordingly. This modular design makes the expansion of the system simpler and more efficient, and meets the ever-changing cooling needs. Since the coolant can flow directly to the battery cluster 120, unnecessary flow paths and energy losses are reduced. This helps to reduce the energy consumption of the entire liquid cooling system and improve energy efficiency. By configuring an independent branch unit 1322 for each battery cluster 120, it can be ensured that even if a branch unit 1322 fails, it will not affect the cooling effect of other battery clusters 120. This design improves the reliability and stability of the entire liquid cooling system and ensures the continuous operation of the energy storage device 100.

[0061] In addition, through the combination of the main circuit 1321 and the plurality of branch circuit units 1322, this structure makes cooling more precise and efficient, ensuring that the cooling requirements of different components are met. The design of the main circuit 1321 and the plurality of branch circuit units 1322 enhances the heat transfer efficiency and helps to quickly remove the heat, thereby maintaining the battery cluster 120 within a suitable operating temperature range.

[0062] In one embodiment, the output branch pipe 13222 is used to output the coolant in the corresponding battery cluster 120, and the output branch pipe 13222 is at least partially arranged to correspond to the air outlet 113. The output branch pipe 13222 outputs the coolant in the battery cluster 120 and guides it to the vicinity of the air outlet 113. Since the coolant has absorbed heat when flowing through the battery cluster 120, guiding it to the air outlet 113 can ensure that the heat is quickly and effectively discharged to the outside of the device. This improves the efficiency of the entire cooling system and helps to maintain the battery cluster 120 within a suitable operating temperature range. By aligning the output branch pipe 13222 with the air outlet 113, the coolant that has absorbed heat can be quickly discharged to the outside of the device to prevent heat from accumulating inside the device. This helps to reduce the temperature gradient inside the device and maintain a more uniform temperature distribution, thereby extending the service life of the battery and electrical components. Efficient heat discharge reduces the internal heat load of the device, thereby reducing the energy consumption required for the cooling system. The design and layout of the cooling system can be simplified by aligning the output branch pipe 13222 with the air outlet 113. This helps to reduce the number of pipes and connectors, reduce the complexity and maintenance difficulty of the system, and improve the reliability of the overall system.

[0063] It should be noted that, in other embodiments, the output branch pipe 13222 can also be partially set corresponding to the air inlet 112. In this way, when the output branch pipe 13222 is partially set corresponding to the air inlet 112, the coolant that has absorbed heat from the battery cluster 120 can directly exchange heat with the cold air of the air inlet 112. This direct heat exchange can more effectively discharge heat from the coolant and discharge the heat to the outside of the device through the air outlet 113. This improves the cooling efficiency and helps to maintain the temperature inside the device. By setting the output branch pipe 13222 partially corresponding to the air inlet 112, it can be ensured that the heat in the coolant is exchanged with the cold air during the discharge process, reducing the possibility of heat reflux, thereby maintaining the temperature environment inside the device. Combining the output branch pipe 13222 with the air inlet 112 can form a more efficient cooling cycle. After absorbing the heat in the battery cluster 120, the coolant can quickly reduce the temperature by heat exchange with the cold air of the air inlet 112 and be recycled again. This circulation cooling method can improve the efficiency of the entire cooling system and ensure the stable operation of the equipment under different workloads and environmental conditions. By arranging the output branch pipeline 13222 part corresponding to the air inlet 112, the design and layout of the cooling system can be simplified.

[0064] In one embodiment, the input branch pipe 13221 is used to transport the coolant to the corresponding battery cluster 120, and the output branch pipe 13222 is at least partially arranged to correspond to the air inlet 112. In this way, by making the input branch pipe 13221 correspond to the air inlet 112, the coolant can directly enter the interior of the device and first flow through the battery cluster 120. In this way, the coolant can quickly absorb the heat generated by the battery cluster 120, thereby achieving a direct cooling effect. This design helps to quickly reduce the temperature of the battery cluster 120 and prevent overheating. Directly injecting the coolant into the battery cluster 120 can ensure that the coolant is in full contact with each part of the battery cluster 120, thereby achieving a uniform temperature distribution. This helps to reduce the temperature difference inside the battery cluster 120, avoid local overheating or insufficient cooling, and improve the service life and performance of the battery. By making the input branch pipe 13221 correspond to the air inlet 112, it can be ensured that the coolant has exchanged heat with the cold air of the air inlet 112 before entering the device. In this way, the coolant has a lower temperature when entering the battery cluster 120, which improves the cooling efficiency. In addition, the introduction of cold air also helps to increase the ventilation volume inside the equipment, further improving the cooling effect. By aligning the input branch pipe 13221 with the air inlet 112, the design and layout of the liquid cooling system can be simplified. This helps to reduce the number of pipes and connectors, reduce the complexity and maintenance difficulty of the system, and improve the reliability of the overall system.

[0065] In one embodiment, the input main pipe section 13211 and the output main pipe section 13212 are both arranged at intervals along the width direction of the box 110. In this way, by arranging the input main pipe section 13211 and the output main pipe section 13212 at intervals along the width direction of the box 110, the space inside the box 110 can be used more flexibly. This layout method helps to reduce the intersection and interference between the pipes, making the layout of the entire liquid cooling system clearer and more orderly. The interval arrangement of the input main pipe section 13211 and the output main pipe section 13212 helps to ensure the smooth flow of the coolant in the main pipe. This can reduce the resistance of the fluid, increase the flow rate of the coolant, and thus enhance the cooling effect. In addition, the interval arrangement also helps to prevent the coolant from being retained and the temperature rising in the main pipe, ensuring the stability of the cooling efficiency. The input main pipe section 13211 and the output main pipe section 13212 are arranged at intervals, which can reduce the interference of heat exchange between them. This helps to keep the temperature of the input and transported coolant stable and improve the overall efficiency of the cooling system. At the same time, the interval arrangement can also reduce the heat loss of the coolant in the main pipe and improve the energy utilization efficiency. The interval arrangement of the input main pipe section 13211 and the output main pipe section 13212 can simplify the connection and installation process of the pipelines. This layout method can reduce the misalignment and collision between the pipelines and improve the accuracy and convenience of installation. In addition, the interval arrangement also helps to more easily access and repair the main pipeline during maintenance, thereby improving the efficiency and convenience of maintenance.

[0066] In addition, the configuration of the input main pipe section 13211 and the output main pipe section 13212 allows the coolant in the liquid cooling pipe group 132 to reach each battery cluster 120 at a uniform temperature, thereby improving the temperature uniformity of the energy storage device 100 and enhancing the stability and system life of the energy storage device 100.

[0067] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0068] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0069] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0070] In the description of the present application, “plurality” means two or more.

[0071] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0072] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0074] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage device, characterized in that: include: A box body, wherein a plurality of compartments are formed in the box body, and the plurality of compartments include at least one integrated compartment and a plurality of battery compartments which are sequentially spaced apart along the length direction of the box body; A plurality of battery clusters, wherein the plurality of battery clusters are installed in the plurality of battery compartments; The liquid cooling system includes a liquid cooling electrical component and a liquid cooling pipe group, wherein the liquid cooling electrical component is installed in at least one of the integrated compartments, one end of the liquid cooling pipe group is located in at least one of the integrated compartments and is connected to the liquid cooling electrical component, and the other end of the liquid cooling pipe group is located in a plurality of the battery compartments and is connected to a plurality of the battery clusters.

2. The energy storage device according to claim 1, characterized in that: The box body is provided with an air inlet and an air outlet connected to the battery compartment, and at least one of the air inlet and the air outlet is located at the top of the box body.

3. The energy storage device according to claim 2, characterized in that: The air inlet is extended along the length direction of the box body.

4. The energy storage device according to claim 2, characterized in that: The air inlet and / or the air outlet are arranged in plurality, and the plurality of air inlets and / or the plurality of air outlets are arranged in one-to-one correspondence with the plurality of battery compartments.

5. The energy storage device according to claim 4, characterized in that: The plurality of air inlets arranged at intervals along the length direction of the box together constitute an air inlet assembly, at least two air inlet assemblies are provided, and at least two air inlet assemblies are arranged at intervals along the width direction of the box; and / or The plurality of air inlets and / or the plurality of air outlets are arranged at intervals along the length direction of the box body.

6. The energy storage device according to claim 5, characterized in that: The plurality of air outlets arranged along the length direction of the box together constitute an air outlet component, at least one air outlet component is provided, and at least one air outlet component is located between two adjacent air inlet components.

7. The energy storage device according to any one of claims 2 to 6, characterized in that: The air inlet is connected to a filter channel and / or The air outlet is also equipped with a fan, which is used to discharge the gas in the multiple battery compartments.

8. The energy storage device according to any one of claims 2 to 6, characterized in that: The liquid cooling tube group comprises: A main pipe, one end of which is connected to the liquid-cooled electrical component, the main pipe comprising an input main pipe section and an output main pipe section both extending along the length direction of the box, the input main pipe section and the output main pipe section being arranged at the top of the plurality of battery clusters; A plurality of branch units are provided corresponding to the plurality of battery clusters, each of the plurality of branch units comprises an input branch pipeline and an output branch pipeline, one end of each input branch pipeline and one end of each output branch pipeline are connected to the corresponding battery cluster, the other end of each input branch pipeline is connected to the input main pipe section, and the other end of each output branch pipeline is connected to the output main pipe section.

9. The energy storage device according to claim 8, characterized in that: Each of the output branch pipes is used to output the coolant in the corresponding battery cluster, and at least a portion of the output branch pipe is arranged corresponding to the air outlet; and / or, Each of the input branch pipelines is used to transport coolant to the corresponding battery cluster, and the output branch pipeline is at least partially arranged corresponding to the air inlet.

10. The energy storage device according to claim 8, characterized in that: The input main pipe section and the output main pipe section are both arranged at intervals along the width direction of the box body.

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