Energy storage system

Abstract

The utility model relates to the technical field of energy storage, and discloses an energy storage system, which comprises a prefabricated cabin, a plurality of groups of battery packs and a plurality of groups of liquid cooling systems, the multiple battery packs are arranged in the prefabricated cabin and are sequentially arranged in the length direction of the prefabricated cabin. The battery pack comprises a plurality of batteries which are sequentially arranged in the height direction of the prefabricated cabin; the liquid cooling systems are connected with the battery packs in a one-to-one correspondence mode. The liquid cooling system comprises a liquid cooling machine and a liquid cooling pipeline; the liquid cooling pipeline comprises a first-stage pipeline and a plurality of groups of second-stage pipelines, and the first-stage pipeline is connected with the liquid cooling machine; the multiple groups of secondary pipelines are sequentially arranged along the height direction of the prefabricated cabin, one ends of the multiple secondary pipelines are respectively connected with the multiple batteries, and the other ends of the multiple secondary pipelines are communicated with the primary pipeline. The cooling response speed of the battery is accelerated, efficient heat dissipation is ensured, and meanwhile, due to the fact that the pipeline structure is greatly simplified, connecting nodes are reduced, the system fault risk is reduced, and the maintenance process is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to an energy storage system. Background Art

[0002] Inside an energy storage system, generally multiple battery clusters are arranged, and each battery cluster is composed of multiple batteries. During the operation of the batteries, certain heat will be generated. To ensure the normal operation of each battery, a liquid cooling system is usually arranged in a prefabricated energy storage cabin, and a coolant is introduced into the liquid cooling pipeline of the liquid cooling system to cool down each battery. The liquid cooling pipeline of the liquid cooling system in the related art needs to be provided with at least three levels of pipelines to realize the flow of the coolant between the liquid cooling unit and the batteries; and the connection complexity of at least three levels of pipelines is relatively high, and the installation efficiency is low; and due to the large number of connection nodes, it is difficult to detect a leakage point once it appears. Summary of the Utility Model

[0003] In view of this, the utility model provides an energy storage system to solve the problems that the connection complexity of at least three levels of pipelines is relatively high, the installation efficiency is low; and due to the large number of connection nodes, it is difficult to detect a leakage point once it appears.

[0004] The utility model provides an energy storage system, which includes a prefabricated cabin, multiple groups of battery packs and multiple groups of liquid cooling systems; the multiple groups of battery packs are arranged in the prefabricated cabin and are arranged in sequence along the length direction of the prefabricated cabin; the battery pack includes multiple batteries arranged in sequence along the height direction of the prefabricated cabin; the multiple groups of liquid cooling systems are respectively connected to the multiple groups of battery packs in one-to-one correspondence; the liquid cooling system includes a liquid chiller and a liquid cooling pipeline; the liquid cooling pipeline includes a primary pipeline and multiple groups of secondary pipelines, and the primary pipeline is connected to the liquid chiller; the multiple groups of secondary pipelines are arranged in sequence along the height direction of the prefabricated cabin, and one ends of the multiple secondary pipelines are respectively connected to multiple batteries, and the other ends are all communicated with the primary pipeline.

[0005] Beneficial effects: Since each battery pack is correspondingly connected to a set of liquid cooling systems, that is, each battery pack is independently equipped with a set of liquid cooling systems. Compared with the traditional liquid cooling unit connected to multiple battery packs simultaneously, modular configuration and installation are achieved. This not only ensures the independence and stability of the connection between the battery pack and the liquid cooling system, effectively avoiding interference between them, but also provides convenience for the separate maintenance and installation of the battery pack and the liquid cooling system. And because each battery pack is independently equipped with a set of liquid cooling systems, the liquid cooler and the battery can be directly connected by highly integrated primary pipelines and secondary pipelines. Compared with the traditional solution that requires a three-stage complex pipeline, the transmission efficiency of the coolant is significantly improved, and the installation speed of the liquid cooling pipeline is increased. Moreover, the setting of the primary pipeline and the secondary pipeline not only shortens the transmission path of the coolant, accelerates the cooling response speed of the battery, and ensures efficient heat dissipation, but also significantly simplifies the pipeline structure, reduces the connection nodes, thereby reducing the system failure risk and simplifying the maintenance process. When overhauling and troubleshooting potential faults, the reduced pipeline levels enable faster fault location and higher solution efficiency, providing strong guarantee for the continuous and stable operation of the equipment.

[0006] In an optional embodiment, the liquid cooler is provided with a liquid inlet end and a liquid outlet end, and the battery is provided with a coolant inlet and a coolant outlet; the primary pipeline includes a primary liquid inlet pipeline and a primary liquid outlet pipeline, and the secondary pipeline includes a secondary liquid inlet pipeline and a secondary liquid outlet pipeline; the primary liquid inlet pipeline is connected to the liquid outlet end, one end of the secondary liquid inlet pipeline communicates with the primary liquid inlet pipeline, and the other end is connected to the coolant inlet; the primary liquid outlet pipeline is connected to the liquid inlet end, one end of the secondary liquid outlet pipeline communicates with the primary liquid outlet pipeline, and the other end is connected to the coolant outlet.

[0007] Beneficial effects: By connecting the primary liquid inlet pipeline and the secondary liquid inlet pipeline, a direct channel for the coolant to flow from the liquid outlet end to the coolant inlet is constructed, ensuring the efficient inflow of the coolant into the battery; by connecting the primary liquid outlet pipeline and the secondary liquid outlet pipeline, the coolant can flow efficiently from the coolant outlet into the liquid inlet end; a smooth cycle of the coolant circulating back and forth and seamlessly transmitting between the liquid cooler and the battery is achieved, improving the overall cooling efficiency.

[0008] In an optional embodiment, the liquid cooler is installed on the outer wall of the prefabricated cabin, and a communication port is provided on the outer wall of the prefabricated cabin. One end of the primary pipeline is connected to the liquid cooler, and the other end passes through the communication port and is located inside the prefabricated cabin.

[0009] Beneficial effects: By installing the liquid cooler on the outer wall of the prefabricated cabin, the occupation of the internal space of the prefabricated cabin by the cooler is avoided, the utilization rate of the internal space of the prefabricated cabin is improved, and great convenience is provided for the later maintenance of the liquid cooler. Maintenance personnel can maintain the liquid cooler without opening the prefabricated cabin, greatly reducing the maintenance difficulty and cost; the setting of the communication port helps to realize the connection between the primary pipeline and the liquid cooler, and the overall structure is reasonably set.

[0010] In an alternative embodiment, the prefabricated cabin includes a cabin body and a cabin door, and the battery pack is arranged inside the cabin body; the cabin door is hinged to the cabin body; the communication port is arranged on the cabin door, the liquid cooler is installed on the cabin door, and both the primary pipeline and the secondary pipeline are located on the side of the battery pack close to the cabin door.

[0011] Beneficial effects: By installing the liquid cooler on the cabin door and both the primary pipeline and the secondary pipeline are located on the side of the battery pack close to the cabin door, it helps to realize the connection between the liquid cooler, the primary pipeline, the secondary pipeline and the battery; and opening the cabin door can realize the installation and maintenance of the primary pipeline and the secondary pipeline, enhancing the convenience of the installation and later maintenance of the liquid cooling pipeline, effectively shortening the maintenance time and reducing the maintenance cost.

[0012] In an alternative embodiment, there are multiple cabin doors, and the multiple cabin doors are arranged in sequence along the length direction of the prefabricated cabin, and each set of the liquid cooling systems is correspondingly arranged with one of the cabin doors.

[0013] Beneficial effects: By dispersedly arranging multiple liquid cooling systems, the weight of a single liquid cooler is reduced, which helps to install the liquid cooler on the cabin door, improving the maintainability and flexibility of the energy storage system; and the setting of multiple cabin doors helps to realize the separate installation and maintenance of the battery pack and the liquid cooling system.

[0014] In an alternative embodiment, multiple groups of the battery packs arranged in an array form multiple clusters of battery clusters, and the multiple clusters of battery clusters are arranged in parallel in sequence along the height direction of the prefabricated cabin. One cluster of battery clusters includes a row of multiple batteries connected in series along the length direction of the prefabricated cabin; the energy storage system further includes multiple high-voltage boxes, the high-voltage boxes are arranged on one side of the battery clusters along the length direction of the prefabricated cabin, the multiple high-voltage boxes correspond to the multiple clusters of battery clusters one by one, and the high-voltage boxes are electrically connected to the corresponding battery clusters.

[0015] Beneficial effect: Since a row of multiple batteries connected in series along the length direction of the prefabricated cabin forms a battery cluster; and each battery cluster is connected to a high-voltage box, precise control and management of a battery cluster by a high-voltage box is achieved. This one-to-one management mode can prevent the battery cluster from overloading, which not only improves the response speed and flexibility of the system, but also makes the performance monitoring, status adjustment and safety protection of a single battery cluster more direct and efficient, realizing in-depth and refined management of the battery system, ensuring that each battery cluster is in the best working condition, and significantly improving the safety and reliability of the overall system.

[0016] In an optional embodiment, it also includes a wiring harness and pipeline fixing box, which is arranged on one side of the battery; two adjacent batteries are connected in series via a connecting wire, and the wiring harness and pipeline fixing box is used to store and fix the connecting wire.

[0017] Beneficial effect: By setting the wiring harness pipeline fixing box, the connecting wires can be prevented from falling off, the stability of the connecting wire connection can be improved, and the connecting wires can be prevented from being squeezed and damaged, thereby extending the service life of the connecting wires.

[0018] In an optional embodiment, the prefabricated cabin further includes a partition side plate, which divides the prefabricated cabin into a first chamber and a second chamber, and the battery cluster is arranged in the first chamber; the high-voltage box is arranged in the second chamber.

[0019] Beneficial effect: By setting the separating side plate, the high-voltage box can be separated from the battery cluster. When a failure occurs in the liquid cooling pipeline, the coolant can be prevented from splashing onto the high-voltage box, thereby improving the overall operating safety and reliability of the energy storage system.

[0020] In an optional embodiment, the second chamber includes a high-voltage chamber and an electrical chamber, and the high-voltage chamber and the electrical chamber are arranged in sequence along the width direction of the prefabricated cabin; the electrical chamber is located on the side of the high-voltage chamber away from the liquid cooling system; the high-voltage box is arranged in the high-voltage chamber, the high-voltage box includes an input end and an output end, the input end is located on the side where the liquid cooling system is located, and the battery is electrically connected to the high-voltage box through the input end; the output end is located on the side where the electrical chamber is located, and the high-voltage box is electrically connected to the electrical chamber through the output end.

[0021] Beneficial effects: Through the layout settings of the high-voltage box, battery cluster, and electrical room, the high-voltage box can efficiently receive the current from the battery cluster connection line and quickly transfer it to the electrical room through its output terminal, realizing a smooth current path of "forward in and backward out". This layout not only simplifies the high-voltage connection process, shortens the connection distance, but also greatly reduces the unnecessary wiring space, making the entire system more compact and efficient. At the same time, since the connections between the high-voltage box, battery cluster, and electrical room are more intuitive and convenient for connection, the maintenance difficulty and cost are reduced, facilitating subsequent maintenance work.

[0022] In an alternative embodiment, in the width direction of the prefabricated cabin, the distance between the high-voltage box and the cabin door is greater than the distance between the battery and the cabin door.

[0023] Beneficial effects: Since in the width direction of the prefabricated cabin, the distance between the high-voltage box and the cabin door is greater than the distance between the battery and the cabin door, that is, the overall position of the high-voltage box is recessed backward relative to the battery; since the connection line from the battery to the high-voltage box has a bending radius, placing the high-voltage box in a recessed manner can leave a safety space for the bending radius of the connection line, preventing the outer skin of the connection line from being squeezed and damaged, and preventing potential safety accidents; and since the side of the high-voltage room away from the battery cluster is in a closed state, when connecting between the output terminal of the high-voltage box and the electrical room, the operator can directly use the space inside the electrical room for operation without detouring or passing through complex areas, greatly reducing the inconvenience and obstacles of wiring. This layout not only simplifies the wiring process, improves work efficiency, but also comprehensively enhances the overall safety from the structure, bringing convenience to subsequent assembly and maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the related art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is the front view of an energy storage system according to an embodiment of the present invention;

[0026] Figure 2 It is the installation structure schematic diagram of the liquid cooling system according to an embodiment of the present invention;

[0027] Figure 3 It is the installation structure schematic diagram of the battery and the high-voltage box according to an embodiment of the present invention;

[0028] Figure 4Front view of the installation structure of the battery and the high-voltage box according to the embodiment of the present utility model;

[0029] Figure 5 Schematic structural diagram of the high-voltage chamber and the electrical chamber according to the embodiment of the present utility model;

[0030] Figure 6 Schematic connection structure diagram of the high-voltage box according to the embodiment of the present utility model.

[0031] Explanation of reference numerals:

[0032] 1, prefabricated cabin; 11, cabin body; 12, cabin door; 121, communication port; 13, partition side plate; 14, first chamber; 15, second chamber; 151, guide rail; 1511, second fixing ear; 152, high-voltage chamber; 153, electrical chamber; 2, battery; 31, liquid chiller; 32, liquid cooling pipeline; 321, primary pipeline; 3211, primary liquid inlet pipeline; 3212, primary liquid outlet pipeline; 322, secondary pipeline; 3221, secondary liquid inlet pipeline; 3222, secondary liquid outlet pipeline; 4, high-voltage box; 41, first fixing ear; 42, assembly and disassembly ear; 5, wire harness pipeline fixing box. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] The battery 2 mentioned in the description of the present utility model refers to a single physical module including one or more battery cells to provide a higher voltage and quantity. Exemplarily, the battery 2 is composed of a plurality of battery cells connected in series and / or in parallel. For example, the battery 2 mentioned in the present utility model may include a battery module or a battery pack, etc.

[0035] The following combines Figures 1 to 6 , to describe the embodiments of the present utility model.

[0036] According to an embodiment of the present utility model, an energy storage system is provided, which includes a prefabricated cabin 1, multiple groups of battery packs, and multiple groups of liquid cooling systems; the multiple groups of battery packs are arranged in the prefabricated cabin 1 in sequence along the length direction of the prefabricated cabin 1; each battery pack includes multiple batteries 2 arranged in sequence along the height direction of the prefabricated cabin 1; the multiple groups of liquid cooling systems are respectively connected to the multiple groups of battery packs in one-to-one correspondence; the liquid cooling system includes a liquid chiller 31 and a liquid cooling pipeline 32; the liquid cooling pipeline 32 includes a primary pipeline 321 and multiple groups of secondary pipelines 322, and the primary pipeline 321 is connected to the liquid chiller 31; the multiple groups of secondary pipelines 322 are arranged in sequence along the height direction of the prefabricated cabin 1, and one ends of the multiple secondary pipelines 322 are respectively connected to the multiple batteries 2, and the other ends are all communicated with the primary pipeline 321.

[0037] Since each group of battery packs is correspondingly connected to a group of liquid cooling systems, that is, each group of battery packs is independently equipped with a group of liquid cooling systems. Compared with the traditional liquid cooling unit that is simultaneously connected to multiple groups of battery packs, modular configuration and installation are realized, which not only ensures the independence and stability of the connection between the battery packs and the liquid cooling systems, effectively avoids interference between them, but also provides convenience for the separate maintenance and installation of the battery packs and the liquid cooling systems. And because each group of battery packs is independently equipped with a group of liquid cooling systems, the liquid chiller 31 and the battery 2 can be directly connected by the highly integrated primary pipeline 321 and secondary pipelines 322. Compared with the traditional scheme that requires a three-stage complex pipeline, the transmission efficiency of the coolant is significantly improved, and the installation speed of the liquid cooling pipeline 32 is increased; moreover, the setting of the primary pipeline 321 and the secondary pipelines 322 not only shortens the transmission path of the coolant, accelerates the cooling response speed of the battery 2, ensures efficient heat dissipation, but also significantly simplifies the pipeline structure, reduces the connection nodes, thereby reducing the system failure risk and simplifying the maintenance process. When overhauling and troubleshooting potential faults, the reduced pipeline levels enable faster fault location and higher solution efficiency, providing a strong guarantee for the continuous and stable operation of the equipment.

[0038] In one embodiment, the liquid chiller 31 is provided with a liquid inlet end and a liquid outlet end, and the battery 2 is provided with a coolant inlet and a coolant outlet; the primary pipeline 321 includes a primary liquid inlet pipeline 3211 and a primary liquid outlet pipeline 3212, and the secondary pipeline 322 includes a secondary liquid inlet pipeline 3221 and a secondary liquid outlet pipeline 3222; the primary liquid inlet pipeline 3211 is connected to the liquid outlet end, one end of the secondary liquid inlet pipeline 3221 is communicated with the primary liquid inlet pipeline 3211, and the other end is connected to the coolant inlet; the primary liquid outlet pipeline 3212 is connected to the liquid inlet end, one end of the secondary liquid outlet pipeline 3222 is communicated with the primary liquid outlet pipeline 3212, and the other end is connected to the coolant outlet.

[0039] By connecting the primary liquid inlet pipeline 3211 with the secondary liquid inlet pipeline 3221, a direct channel for the coolant from the liquid outlet end to the coolant inlet is constructed, ensuring the efficient inflow of the coolant into the battery 2; by connecting the primary liquid outlet pipeline 3212 with the secondary liquid outlet pipeline 3222, the efficient inflow of the coolant from the coolant outlet into the liquid inlet end can be achieved; a smooth circulation of the coolant between the liquid cooler 31 and the battery 2 in a cyclic and seamless manner is realized, improving the overall cooling efficiency.

[0040] In one embodiment, the liquid cooler 31 is installed on the outer side wall of the prefabricated cabin 1, and a communication port 121 is provided on the outer side wall of the prefabricated cabin 1. One end of the primary pipeline 321 is connected to the liquid cooler 31, and the other end passes through the communication port 121 and is located inside the prefabricated cabin 1.

[0041] By installing the liquid cooler 31 on the outer side wall of the prefabricated cabin 1, the occupation of the space inside the prefabricated cabin 1 by the cooler is avoided, improving the utilization rate of the space inside the prefabricated cabin 1, and also providing great convenience for the later maintenance of the liquid cooler 31. The maintenance personnel can maintain the liquid cooler 31 without opening the prefabricated cabin 1, greatly reducing the maintenance difficulty and cost; the setting of the communication port 121 helps to realize the connection between the primary pipeline 321 and the liquid cooler 31, and the overall structure is reasonably arranged.

[0042] Preferably, a waterproof structure is provided on the outer side of the liquid cooler 31, which can prevent rainwater from entering the liquid cooler 31.

[0043] Specifically, the waterproof structure can be a waterproof board, which is located above the liquid cooler 31 and is fixedly connected to the cabin door 12.

[0044] In an alternative embodiment, the waterproof structure can also be a waterproof cover, which covers the liquid cooler 31.

[0045] In one embodiment, the prefabricated cabin 1 includes a cabin body 11 and a cabin door 12, and the battery pack is arranged inside the cabin body 11; the cabin door 12 is hinged to the cabin body 11; the communication port 121 is provided on the cabin door 12, the liquid cooler 31 is installed on the cabin door 12, and both the primary pipeline 321 and the secondary pipeline 322 are located on the side of the battery pack close to the cabin door 12.

[0046] By installing the liquid cooler 31 on the cabin door 12, and both the primary pipeline 321 and the secondary pipeline 322 are located on the side of the battery pack close to the cabin door 12, it helps to realize the connection between the liquid cooler 31, the primary pipeline 321, the secondary pipeline 322 and the battery 2; and opening the cabin door 12 can realize the installation and maintenance of the primary pipeline 321 and the secondary pipeline 322, enhancing the convenience of the installation and later maintenance of the liquid cooling pipeline 32, effectively shortening the maintenance time and reducing the maintenance cost.

[0047] Specifically, the liquid cooler 31 is installed on the hatch door 12 in a wall-mounted manner.

[0048] In one embodiment, there are multiple hatch doors 12, and the multiple hatch doors 12 are arranged in sequence along the length direction of the prefabricated cabin 1. Each set of the liquid cooling system is correspondingly arranged with one hatch door 12.

[0049] Since multiple liquid cooling systems are dispersedly arranged, the weight of a single liquid cooler 31 is reduced, which helps to install the liquid cooler 31 on the hatch door 12, improving the maintainability and flexibility of the energy storage system; and the arrangement of multiple hatch doors 12 helps to separately install and repair the battery pack and the liquid cooling system.

[0050] In one embodiment, multiple groups of the battery packs arranged in an array form multiple clusters of battery clusters, and the multiple clusters of battery clusters are arranged in parallel in sequence along the height direction of the prefabricated cabin 1. One cluster of battery clusters includes a row of multiple batteries 2 connected in series in sequence along the length direction of the prefabricated cabin 1; the energy storage system further includes multiple high-voltage boxes 4, and the high-voltage boxes 4 are arranged on one side of the battery clusters along the length direction of the prefabricated cabin 1. The multiple high-voltage boxes 4 correspond to the multiple clusters of battery clusters one by one, and the high-voltage boxes 4 are electrically connected to the corresponding battery clusters.

[0051] Since a row of multiple batteries 2 connected in series in sequence along the length direction of the prefabricated cabin 1 form one cluster of battery clusters; and each cluster of battery clusters is connected to one high-voltage box 4, precise control and management of one cluster of battery clusters by one high-voltage box 4 are achieved. This one-to-one management mode can prevent the battery clusters from being overloaded, not only improving the response speed and flexibility of the system, but also making the performance monitoring, status adjustment and safety protection of a single cluster of battery clusters more direct and efficient, realizing in-depth and refined management of the battery system, ensuring that each cluster of battery clusters is in the best working state, and at the same time significantly improving the safety and reliability of the overall system.

[0052] Specifically, multiple batteries 2 are distributed in an array in the prefabricated cabin 1; a column of the batteries 2 distributed along the height direction of the prefabricated cabin 1 forms one set of the battery packs; a row of the batteries 2 distributed along the length direction of the prefabricated cabin 1 forms one cluster of the battery clusters.

[0053] In a specific implementation manner, there are four batteries 2 in each row; there are nine batteries 2 in each column; the overall distribution is closely coherent and the space utilization is full, thus making the space in the height direction and the length direction of the prefabricated cabin 1 most effectively utilized.

[0054] In a specific implementation manner, there are four sets of the liquid cooling systems, and there are four hatch doors 12; the four hatch doors 12, the four sets of the liquid cooling systems and the four sets of the batteries 2 are correspondingly arranged one by one.

[0055] In a specific embodiment, nine high-voltage boxes 4 are provided, and the nine high-voltage boxes 4 are respectively connected to nine clusters of battery clusters in one-to-one correspondence.

[0056] Specifically, the high-voltage box 4 is a DC high-voltage control box.

[0057] In one embodiment, a wiring harness pipeline fixing box 5 is further included, which is arranged on one side of the battery 2; two adjacent batteries 2 are connected in series through a connecting wire, and the wiring harness pipeline fixing box 5 is used for receiving and fixing the connecting wire.

[0058] By providing the wiring harness pipeline fixing box 5, the connecting wire can be prevented from falling off, the connection stability of the connecting wire can be improved, and the connecting wire can be prevented from being squeezed and damaged, thereby prolonging the service life of the connecting wire.

[0059] Specifically, the connecting wire is a high-voltage busbar.

[0060] Specifically, two adjacent batteries 2 in each row are connected end to end through the positive and negative poles of the high-voltage busbar, and then the positive pole of the battery 2 far from the high-voltage box 4 and the negative pole of the battery 2 close to the high-voltage box 4 are respectively connected to the positive and negative poles of the input end of the high-voltage control box. In this way, one high-voltage box 4 can connect each cluster of batteries 2, and effective management and safety management of the battery clusters can be realized.

[0061] In a specific embodiment, the wiring harness pipeline fixing and setting are on the side where the hatch 12 is located. Opening the hatch 12 can realize the installation and maintenance of the wiring harness pipeline fixing box 5 and the connecting wire, saving the time required for the installation and maintenance of the wiring harness pipeline fixing box 5 and the connecting wire, and improving the installation and maintenance efficiency of the wiring harness pipeline fixing box 5 and the connecting wire. And because the wiring harness pipeline fixing and setting are on the side where the hatch 12 is located, and the connecting wire is received in the wiring harness pipeline fixing box 5, the connecting wire can be separated from the secondary pipeline 322. When the secondary pipeline 322 is damaged and coolant leaks, the coolant can be prevented from dripping onto the connecting wire, ensuring the safety of the connecting wire during use.

[0062] In an embodiment of this embodiment, the coolant inlet and coolant outlet on the battery 2 are respectively arranged on both sides of the wiring harness pipeline fixing box 5; the primary pipeline 321 is arranged on the side of the battery 2 close to the coolant inlet, the length of the secondary liquid inlet pipeline 3221 is less than the length of the secondary liquid outlet pipeline 3222, and the secondary liquid outlet pipeline 3222 can be fixed on the wiring harness pipeline fixing box 5 to prevent the secondary liquid outlet pipeline 3222 from falling off, improving the connection stability of the secondary liquid outlet pipeline 3222.

[0063] In another implementation manner of this embodiment, the coolant inlet and the coolant outlet on the battery 2 are respectively arranged on both sides of the wiring harness pipeline fixing box 5; the primary pipeline 321 is arranged on the side of the battery 2 close to the coolant outlet, the length of the secondary liquid inlet pipeline 3221 is greater than the length of the secondary liquid outlet pipeline 3222, and the secondary liquid inlet pipeline 3221 can be fixed on the wiring harness pipeline fixing box 5 to prevent the secondary liquid inlet pipeline 3221 from falling off, improving the connection stability of the secondary liquid inlet pipeline 3221.

[0064] In one embodiment, the prefabricated cabin 1 further includes a partition side plate 13, the partition side plate 13 divides the prefabricated cabin 1 into a first chamber 14 and a second chamber 15, and the battery cluster is arranged in the first chamber 14; the high-voltage box 4 is arranged in the second chamber 15.

[0065] Through the arrangement of the partition side plate 13, the high-voltage box 4 can be separated from the battery cluster. When a fault occurs in the liquid cooling pipeline 32, it can prevent the coolant from splashing onto the high-voltage box 4, improving the overall operation safety and reliability of the energy storage system.

[0066] In a specific implementation manner, multiple groups of slide rails are arranged in the first chamber 14, the multiple groups of slide rails are sequentially arranged at intervals along the height direction of the prefabricated cabin 1, and the slide rails extend along the width direction of the prefabricated cabin 1; the multiple high-voltage boxes 4 are arranged in one-to-one correspondence with the multiple groups of slide rails; the high-voltage box 4 is slidably connected to the slide rails. By arranging the slide rails, it can play a guiding role in the installation of the high-voltage box 4.

[0067] Preferably, each group of slide rails includes two guide rails 151, the two guide rails 151 are respectively arranged on two side walls of the first chamber 14 along the length direction of the prefabricated cabin 1; the high-voltage box 4 is convexly provided with sliders on two side walls along the length direction of the prefabricated cabin 1, and the two sliders are respectively slidably connected to the two guide rails 151. Through the arrangement of the two guide rails 151, it can prevent the high-voltage box 4 from swinging left and right during installation, ensuring the installation stability of the high-voltage box 4 and being beneficial to the effective progress of the assembly.

[0068] In one implementation manner of this embodiment, a first fixing ear 41 is provided on one side of the high-voltage box 4 close to the cabin door 12, one first fixing ear 41 is arranged at one end of the high-voltage box 4 along the length direction of the prefabricated cabin 1, and a second fixing ear 1511 is provided at the end of one guide rail 151; the first fixing ear 41 and the second fixing ear 1511 are connected by fasteners such as screws.

[0069] In an alternative embodiment, two first fixing ears 41 are provided on the side of the high-voltage box 4 close to the cabin door 12, and the two first fixing ears 41 are respectively arranged at the two ends of the high-voltage box 4 along the length direction of the prefabricated cabin 1, and the ends of the two guide rails 151 are provided with second fixing ears 1511; the two first fixing ears 41 and the two second fixing ears 1511 are respectively connected by fasteners such as screws.

[0070] Preferably, the first fixing ear 41 is protrudingly arranged on the high-voltage box 4 along the length direction of the prefabricated cabin 1. When the high-voltage box 4 is installed in place, the first fixing ear 41 is engaged with the second fixing ear 1511 to prevent the high-voltage box 4 from excessively sliding along the slide rail, thereby ensuring the accurate installation of the high-voltage box 4.

[0071] In a specific embodiment, the high-voltage box 4 is also provided with an assembly and disassembly ear 42, which is protrudingly arranged on the side of the high-voltage box 4 close to the cabin door 12 and is located above the first fixed ear 41; the setting of the assembly and disassembly ear 42 makes the installation and disassembly of the high-voltage box 4 more time-saving and labor-saving, and provides convenience for subsequent maintenance and inspection.

[0072] In one embodiment, the second chamber 15 includes a high-voltage chamber 152 and an electrical chamber 153, and the high-voltage chamber 152 and the electrical chamber 153 are arranged in sequence along the width direction of the prefabricated cabin 1; the electrical chamber 153 is located on the side of the high-voltage chamber 152 away from the liquid cooling system; the high-voltage box 4 is arranged in the high-voltage chamber 152, and the high-voltage box 4 includes an input end and an output end, the input end is located on the side where the liquid cooling system is located, and the battery 2 is electrically connected to the high-voltage box 4 through the input end; the output end is located on the side where the electrical chamber 153 is located, and the high-voltage box 4 is electrically connected to the electrical chamber 153 through the output end.

[0073] By setting the layout of the high-voltage box 4, the battery cluster, and the electrical room 153, the high-voltage box 4 can efficiently receive the current from the battery cluster connection line and quickly pass it to the electrical room 153 through its output end, realizing a smooth current path of "in and out". This layout not only simplifies the high-voltage connection process and shortens the connection distance, but also greatly reduces unnecessary wiring space, making the entire system more compact and efficient. At the same time, since the connection between the high-voltage box 4, the battery cluster, and the electrical room 153 is more intuitive and easy to connect, the maintenance difficulty and cost are reduced, and subsequent maintenance work is facilitated.

[0074] Specifically, the electrical room 153 is an electrical junction box, which is used to combine high voltages for unified output.

[0075] In one embodiment, in the width direction of the prefabricated cabin 1, the distance between the high-voltage box 4 and the cabin door 12 is greater than the distance between the battery 2 and the cabin door 12.

[0076] Since in the width direction of the prefabricated cabin 1, the distance between the high-voltage box 4 and the cabin door 12 is greater than the distance between the battery 2 and the cabin door 12, that is, the overall position of the high-voltage box 4 is recessed backward relative to the battery 2; since the connecting wire from the battery 2 to the high-voltage box 4 has a turning radius, placing the high-voltage box 4 in a recessed manner can leave a safety space for the turning radius of the connecting wire, prevent the outer skin of the connecting wire from being squeezed and damaged, and prevent potential safety accidents; and since the side of the high-voltage chamber 152 away from the battery cluster is in a closed state, when connecting the output end of the high-voltage box 4 to the electrical chamber 153, the operator can directly use the space inside the electrical chamber 153 for operation without detouring or passing through complex areas, greatly reducing the inconvenience and obstacles of wire routing. This layout not only simplifies the wiring process and improves work efficiency, but also comprehensively improves the overall safety from the structure, bringing convenience to subsequent assembly and maintenance work.

[0077] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An energy storage system, characterized in that: include: Prefabricated cabin (1); A plurality of battery groups are arranged in the prefabricated cabin (1) and arranged in sequence along the length direction of the prefabricated cabin (1); the battery group comprises a plurality of batteries (2) arranged in sequence along the height direction of the prefabricated cabin (1); A plurality of liquid cooling systems are respectively connected to the plurality of battery packs in a one-to-one correspondence; the liquid cooling system comprises a liquid cooling machine (31) and a liquid cooling pipeline (32); the liquid cooling pipeline (32) comprises a primary pipeline (321) and a plurality of secondary pipelines (322), the primary pipeline (321) being connected to the liquid cooling machine (31); the plurality of secondary pipelines (322) are sequentially arranged along the height direction of the prefabricated cabin (1), and one end of the plurality of secondary pipelines (322) is respectively connected to the plurality of batteries (2), and the other end is connected to the primary pipeline (321).

2. The energy storage system according to claim 1, characterized in that: The liquid cooling machine (31) is provided with a liquid inlet and a liquid outlet, and the battery (2) is provided with a cooling liquid inlet and a cooling liquid outlet; the primary pipeline (321) comprises a primary liquid inlet pipeline (3211) and a primary liquid outlet pipeline (3212), and the secondary pipeline (322) comprises a secondary liquid inlet pipeline (3221) and a secondary liquid outlet pipeline (3222); the primary liquid inlet pipeline (3211) is connected to the liquid outlet, one end of the secondary liquid inlet pipeline (3221) is in communication with the primary liquid inlet pipeline (3211), and the other end is connected to the cooling liquid inlet; the primary liquid outlet pipeline (3212) is connected to the liquid inlet, one end of the secondary liquid outlet pipeline (3222) is in communication with the primary liquid outlet pipeline (3212), and the other end is connected to the cooling liquid outlet.

3. The energy storage system according to claim 1, characterized in that: The liquid cooler (31) is installed on the outer wall of the prefabricated cabin (1), and a connecting port (121) is provided on the outer wall of the prefabricated cabin (1); one end of the primary pipeline (321) is connected to the liquid cooler (31), and the other end passes through the connecting port (121) and is located inside the prefabricated cabin (1).

4. The energy storage system according to claim 3, characterized in that: The prefabricated cabin (1) comprises a cabin body (11) and a cabin door (12); the battery pack is arranged in the cabin body (11); the cabin door (12) is hinged to the cabin body (11); the connecting port (121) is arranged on the cabin door (12); the liquid cooling machine (31) is installed on the cabin door (12); and the primary pipeline (321) and the secondary pipeline (322) are both located on a side of the battery pack close to the cabin door (12).

5. The energy storage system according to claim 4, characterized in that: A plurality of the cabin doors (12) are provided, and the plurality of the cabin doors (12) are arranged in sequence along the length direction of the prefabricated cabin (1), and each group of the liquid cooling system is arranged corresponding to one of the cabin doors (12).

6. The energy storage system according to claim 5, characterized in that: The plurality of battery groups arranged in an array form a plurality of battery clusters, the plurality of battery clusters being arranged in parallel in sequence along the height direction of the prefabricated cabin (1), and one of the battery clusters comprising a row of a plurality of batteries (2) connected in series in sequence along the length direction of the prefabricated cabin (1); the energy storage system further comprises a plurality of high-voltage boxes (4), the high-voltage boxes (4) being arranged on one side of the battery cluster along the length direction of the prefabricated cabin (1), the plurality of high-voltage boxes (4) corresponding one-to-one to the plurality of battery clusters, and the high-voltage boxes (4) being electrically connected to the correspondingly arranged battery clusters.

7. The energy storage system according to claim 6, characterized in that: It also includes a wiring harness pipeline fixing box (5) which is arranged on one side of the battery (2); two adjacent batteries (2) are connected in series via a connecting wire, and the wiring harness pipeline fixing box (5) is used to store and fix the connecting wire.

8. The energy storage system according to claim 6, characterized in that: The prefabricated cabin (1) further comprises a partition side plate (13), wherein the partition side plate (13) divides the prefabricated cabin (1) into a first chamber (14) and a second chamber (15), wherein the battery cluster is arranged in the first chamber (14); and the high-voltage box (4) is arranged in the second chamber (15).

9. The energy storage system according to claim 8, characterized in that: The second chamber (15) comprises a high-voltage chamber (152) and an electrical chamber (153), wherein the high-voltage chamber (152) and the electrical chamber (153) are arranged in sequence along the width direction of the prefabricated cabin (1); the electrical chamber (153) is located on a side of the high-voltage chamber (152) away from the liquid cooling system; the high-voltage box (4) is arranged in the high-voltage chamber (152), wherein the high-voltage box (4) comprises an input end and an output end, wherein the input end is located on a side where the liquid cooling system is located, and the battery (2) is electrically connected to the high-voltage box (4) via the input end; and the output end is located on a side where the electrical chamber (153) is located, and the high-voltage box (4) is electrically connected to the electrical chamber (153) via the output end.

10. The energy storage system according to any one of claims 6 to 9, characterized in that: In the width direction of the prefabricated cabin (1), the distance between the high-voltage box (4) and the cabin door (12) is greater than the distance between the battery (2) and the cabin door (12).

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