Liquid cooling pipeline structure, cooling device and energy storage system

Abstract

The utility model relates to a liquid cooling pipeline structure, a cooling device and an energy storage system. In the structure, a first main pipeline is arranged adjacent to the bottom of a battery system, and a second main pipeline is arranged adjacent to the top of the battery system; the branch pipeline assembly is communicated with the first main pipeline to form a first transmission channel; the branch pipeline assembly is communicated with the second main pipeline to form a second transmission channel; the branch pipeline assembly is used for communicating each battery cluster in the battery system, and the cooling liquid is transmitted through the first transmission channel, each battery cluster and the second transmission channel, so that the temperature of each battery cluster is adjusted, and the liquid cooling temperature of each battery cluster is adjusted. By adopting an up-down arrangement mode, the space reserved in the container is fully utilized, the situation that the liquid cooling pipeline additionally occupies a large space is avoided, the space utilization rate in the container is further improved, and the volume energy density of the container is improved; and in addition, operators can conveniently disassemble, assemble and maintain the pipeline, and the maintainability of the pipeline is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a liquid cooling pipeline structure, a cooling device and an energy storage system. BACKGROUND

[0002] The cooling methods of the container energy storage system mainly include air cooling and liquid cooling. The volume energy density of the air-cooled energy storage system is low, and the air quality and humidity in the container are difficult to guarantee. The liquid-cooled energy storage system can provide more accurate temperature control for the battery pack and can improve the volume energy density of the container.

[0003] However, in the existing liquid-cooled energy storage system, the liquid cooling pipeline is difficult to disassemble and maintain, and occupies a large space, resulting in low space utilization of the container. CONTENT OF THE INVENTION

[0004] Therefore, the liquid cooling pipeline structure, the cooling device and the energy storage system are provided.

[0005] In a first aspect, the present application provides a liquid cooling pipeline structure, comprising:

[0006] A main pipeline assembly, the main pipeline assembly comprising a first main pipeline and a second main pipeline, the first main pipeline being arranged adjacent to the bottom of the battery system, and the second main pipeline being arranged adjacent to the top of the battery system;

[0007] A branch pipeline assembly, the branch pipeline assembly being connected to the first main pipeline to form a first transmission channel for transmitting the cooling liquid; the branch pipeline assembly being connected to the second main pipeline to form a second transmission channel for transmitting the cooling liquid; the branch pipeline assembly being used to connect each battery cluster in the battery system, and the cooling liquid being transmitted through the first transmission channel, each battery cluster and the second transmission channel to adjust the temperature of each battery cluster.

[0008] In one embodiment, the branch pipeline assembly comprises a first branch pipeline assembly and a second branch pipeline assembly;

[0009] The first branch pipeline assembly is connected to the first main pipeline and each battery cluster; and the second branch pipeline assembly is connected to the second main pipeline and each battery cluster.

[0010] In one embodiment, the first branch pipeline assembly comprises a plurality of first branch pipelines, and the second branch pipeline assembly comprises a plurality of second branch pipelines; each first branch pipeline is connected to each battery cluster in a one-to-one correspondence, and each second branch pipeline is connected to each battery cluster in a one-to-one correspondence.

[0011] The first branch pipeline is provided with a plurality of first flow distribution members, and the second branch pipeline is provided with a plurality of second flow distribution members; each first flow distribution member of the first branch pipeline is in one-to-one correspondence with the liquid inlet end of each battery pack in the corresponding battery cluster; and each second flow distribution member of the second branch pipeline is in one-to-one correspondence with the liquid outlet end of each battery pack in the corresponding battery cluster.

[0012] In one of the embodiments, the liquid inlet end height of the first flow distribution member is greater than the liquid outlet end height of the second flow distribution member; the liquid inlet end height of the first flow distribution member is the distance from the liquid inlet end of the first flow distribution member connected to the battery pack to the bottom surface of the battery system; and the liquid outlet end height of the second flow distribution member is the distance from the liquid outlet end of the second flow distribution member connected to the same battery pack to the bottom surface of the battery system.

[0013] In one of the embodiments, the second branch pipeline is provided with a first liquid discharge end, and the first liquid discharge end is provided with a first liquid discharge switch; and the first liquid discharge end is adjacent to the first main pipeline.

[0014] In one of the embodiments, the first branch pipeline is provided with a first gas discharge end, and the first gas discharge end is provided with a first gas discharge switch.

[0015] The first gas discharge end is adjacent to the second main pipeline.

[0016] In one of the embodiments, the second main pipeline is provided with a second gas discharge end, and the second gas discharge end is provided with a second gas discharge switch.

[0017] In one of the embodiments, the first main pipeline is provided with a second liquid discharge end, and the second liquid discharge end is provided with a second liquid discharge switch.

[0018] The second aspect of the present application provides a cooling device, comprising a temperature adjusting container, a driving module and a liquid cooling pipeline structure according to any one of the above; the driving module is connected to the liquid cooling pipeline structure and the temperature adjusting container.

[0019] The temperature adjusting container is used for adjusting the temperature of the cooling liquid, and the driving module is used for driving the transmission of the cooling liquid.

[0020] The third aspect of the present application provides an energy storage system, comprising a battery system and a cooling device according to the above; the cooling device is connected to the battery system.

[0021] One of the above technical solutions has the following advantages and beneficial effects:

[0022] The aforementioned liquid-cooled piping structure includes a main pipeline assembly and branch pipeline assemblies. The main pipeline assembly includes a first main pipeline and a second main pipeline. The first main pipeline is located near the bottom of the battery system, and the second main pipeline is located near the top of the battery system. The branch pipeline assembly connects to the first main pipeline to form a first transmission channel for transmitting coolant. The branch pipeline assembly also connects to the second main pipeline to form a second transmission channel for transmitting coolant. The branch pipeline assembly connects each battery cluster in the battery system. Coolant is transmitted through the first transmission channel, each battery cluster, and the second transmission channel to regulate the temperature of each battery cluster, thereby achieving liquid-cooled temperature regulation for each battery cluster. This application, by adopting an up-and-down arrangement, with the first main pipeline located near the bottom of the battery system and the second main pipeline located near the top of the battery system, fully utilizes the space reserved inside the container, avoiding the liquid-cooled piping occupying a large additional space, thus improving the space utilization rate inside the container and increasing the volumetric energy density of the container. In addition, by setting the branch pipeline assembly between the first and second main pipelines, it is convenient for operators to disassemble and maintain the pipeline, enhancing its maintainability. Attached Figure Description

[0023] Figure 1 This is a first block diagram of the liquid cooling pipeline structure in an embodiment of this application;

[0024] Figure 2 This is a second block diagram of the liquid cooling pipeline structure in an embodiment of this application;

[0025] Figure 3 This is a first-view structural schematic diagram of the liquid cooling pipeline structure in the embodiments of this application;

[0026] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0027] Figure 5 for Figure 3 A magnified view of a portion of point B in the middle;

[0028] Figure 6 for Figure 3 A magnified view of a portion of point C in the middle;

[0029] Figure 7 This is a partial structural diagram of the liquid cooling pipeline structure from a second perspective in an embodiment of this application;

[0030] Figure 8 This is a block diagram of the cooling device in an embodiment of this application.

[0031] Figure label:

[0032] 10, liquid cooling pipeline structure; 110, main pipeline assembly; 112, first main pipeline; 114, second main pipeline; 120, branch pipeline assembly; 122, first branch pipeline assembly; 1222, first branch pipeline; 1224, first flow dividing member; 124, second branch pipeline assembly; 1242, second branch pipeline; 1244, second flow dividing member; 130 first liquid discharge switch; 132, second liquid discharge switch; 140, first gas discharge switch; 142, second gas discharge switch; 20, temperature adjusting container; 30, driving module; 40, battery system; 410, battery cluster. DETAILED DESCRIPTION

[0033] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person of ordinary skill in the art without making creative labor should belong to the scope of protection of the present application.

[0034] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0035] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0036] Also, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For the person of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0037] In addition, the term "a plurality of" shall mean two or more.

[0038] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] In the air-cooling mode of the conventional container energy storage system, the air-cooled energy storage system usually needs sufficient space for the air to enter and exit around the battery pack, resulting in a certain empty area around each battery pack, which leads to low volumetric energy density. The cooling effect of the air-cooled energy storage system is easily affected by the ambient temperature. When the outside of the container is in an extreme environment (extremely cold or extremely hot), the temperature of the air inside the container body will also be affected, resulting in an unsatisfactory cooling effect. Moreover, the air-cooled energy storage system cannot ensure that the battery cells are in the best discharge state through air cooling, and the cooling efficiency of air cooling is low. The air-cooled energy storage system needs to set an air inlet on the battery pack shell, which is difficult to ensure the sealing of the battery pack, resulting in single fire-fighting means when thermal runaway occurs. In addition, when the cleanliness inside the container is poor, dust or charged ions can easily enter the battery pack and cause short circuit in the battery pack. In addition, the air-cooled energy storage system needs to be specially designed with a duct, which occupies the space in the battery compartment of the container, resulting in low volumetric energy density of the container, and the duct may accumulate dust, which cannot guarantee the cleanliness inside the container.

[0040] In the liquid cooling mode of the conventional container energy storage system, the liquid cooling pipeline is usually arranged at the bottom layer of the container, which will cause difficulty in disassembly of the pipeline, such as the pipeline being blocked by the battery pack and the high-voltage box. Even if the pipeline is arranged at the door edge of the container, the battery guide rail needs to be avoided, which will occupy a large space, resulting in low space utilization rate of the container, and also causing the problem of liquid leakage that cannot be found or found too late. The conventional liquid cooling pipeline arrangement mode has a large requirement for the space of the container electrical compartment, which is not conducive to the arrangement and design of the busbar cabinet and the fire-fighting system and other systems. In order to avoid the wire harness, the bottom of the battery compartment needs to be raised by a certain space, resulting in waste of space of the container.

[0041] The liquid cooling pipeline structure provided by the embodiments of the present application is applied in the container energy storage system. By means of the distributed arrangement of the liquid cooling pipeline, the internal space of the container is effectively utilized, the space utilization rate in the container is improved, the volumetric energy density of the container is improved, and the pipeline can be easily disassembled and maintained by the operator, thereby enhancing the maintainability of the pipeline.

[0042] In one embodiment, as Figure 1 and Figure 3As shown, a liquid cooling pipeline structure is provided, which includes a main pipeline assembly and a branch pipeline assembly 120. The main pipeline assembly includes a first main pipeline 112 and a second main pipeline 114. The first main pipeline 112 is arranged adjacent to the bottom of the battery system 40, and the second main pipeline 114 is arranged adjacent to the top of the battery system 40. The branch pipeline assembly 120 is connected to the first main pipeline 112 to form a first transmission channel for transmitting the cooling liquid. The branch pipeline assembly 120 is connected to the second main pipeline 114 to form a second transmission channel for transmitting the cooling liquid. The branch pipeline assembly 120 is used to connect each battery cluster 410 in the battery system 40. The cooling liquid is transmitted through the first transmission channel, each battery cluster 410, and the second transmission channel to regulate the temperature of each battery cluster 410.

[0043] The battery system 40 can be arranged in a battery compartment of an energy storage system, and the energy storage system can be a container-type energy storage system. The battery system 40 can include a plurality of battery clusters 410, and each battery cluster 410 can be arranged in an array. For example, the battery system 40 can be composed of a plurality of battery clusters 410 arranged in one row and multiple columns or multiple rows and multiple columns. Each battery cluster 410 can be composed of a plurality of battery packs arranged in a stacked manner. Each battery pack can be connected in series and / or in parallel. Each battery pack can include a plurality of single cells, and each single cell can be connected in series and / or in parallel. The single cell can be, but is not limited to, a lithium ion cell. For example, the single cell can be a lithium iron phosphate cell, a ternary cell, or a lithium manganese iron cell. The single cell can also be a lithium metal cell or a sodium ion cell. The single cell can have a square or cylindrical structure. Each battery pack can further include a battery box body, and the corresponding single cells are arranged in the battery box body. The battery box body is provided with an inlet end and an outlet end, i.e., the battery pack has an inlet end and an outlet end. The cooling liquid can enter the battery pack through the inlet end of the battery pack, and the cooling liquid is output from the outlet end of the battery pack after heat exchange with each single cell in the battery pack, thereby regulating the temperature of each single cell in the battery pack and regulating the temperature of each battery pack in the battery cluster 410.

[0044] The first main pipe 112 can be a main liquid inlet pipe, and the first main pipe 112 is arranged close to the bottom of the battery system 40. The second main pipe 114 can be a main liquid return pipe, and the second main pipe 114 is arranged close to the top of the battery system 40. For example, the first main pipe 112 is arranged adjacent to the bottommost battery pack in the battery cluster 410, and the second main pipe 114 is arranged adjacent to the topmost battery pack in the battery cluster 410. For example, the first main pipe 112 can be arranged transversely close to the bottom of the battery system 40, so that the first main pipe 112 can be arranged to extend from the bottom of the battery cluster 410 along the array arrangement direction of the battery cluster 410 in the battery system 40. The second main pipe 114 can be arranged transversely close to the top of the battery system 40, so that the second main pipe 114 can be arranged to extend from the top of the battery cluster 410 along the array arrangement direction of the battery cluster 410 in the battery system 40. In this way, the first main pipe 112 can start to transfer the cooling liquid to the bottom of the battery cluster 410, so that the cooling liquid can fill each pipe and each battery pack in the battery cluster 410. The cooling liquid after heat exchange in each battery cluster 410 is returned to the liquid cooling unit through the second main pipe 114, so that the cooling liquid can fill the liquid cooling unit, avoid the pump of the liquid cooling unit to run empty, and reduce the risk of damage.

[0045] The branch pipe assembly 120 is connected between the first main pipe 112 and the second main pipe 114, so that the branch pipe assembly 120 is located on the corresponding side of the battery system 40, and the branch pipe assembly 120 is connected to each battery cluster 410, so that the branch pipe assembly 120 is convenient to disassemble and maintain.

[0046] The branch pipe assembly 120 is connected to the first main pipe 112 to form a first transmission channel, and the branch pipe assembly 120 is connected to the second main pipe 114 to form a second transmission channel. The branch pipe assembly 120 is connected to each battery cluster 410 in the battery system 40, so that the cooling liquid can be transmitted through the first transmission channel, each battery system 40, and the second transmission channel to adjust the temperature of each battery cluster 410. For example, the cooling liquid in the liquid cooling unit is transmitted to the first main pipe 112, and the cooling liquid is branched and transmitted to the branch pipe assembly 120 through the first main pipe 112. Then, the cooling liquid is transmitted to each battery cluster 410 through the branch pipe assembly 120. The cooling liquid is heat-exchanged in each battery cluster 410 to adjust the temperature of each battery cluster 410, and the heat-exchanged cooling liquid is returned to the second main pipe 114 through the branch pipe assembly 120. Then, the heat-exchanged cooling liquid is returned to the liquid cooling unit through the second main pipe 114. The liquid cooling unit adjusts the temperature of the returned cooling liquid, and the cooling liquid is transmitted through the first main pipe 112 again. In this way, the temperature of each battery cluster 410 is adjusted through the circulation of the cooling liquid.

[0047] It should be noted that the cooling liquid can be, but is not limited to, water, ethylene glycol solution, propylene glycol solution, etc.

[0048] In the above embodiment, the first main pipe 112 is arranged adjacent to the bottom of the battery system 40, and the second main pipe 114 is arranged adjacent to the top of the battery system 40; the branch pipe assembly 120 is connected to the first main pipe 112 to form a first transmission channel for transmitting the cooling liquid; the branch pipe assembly 120 is connected to the second main pipe 114 to form a second transmission channel for transmitting the cooling liquid; the branch pipe assembly 120 is used to connect each battery cluster 410 in the battery system 40, and the cooling liquid is transmitted through the first transmission channel, each battery cluster 410 and the second transmission channel to adjust the temperature of each battery cluster 410, so as to realize the liquid cooling temperature adjustment of each battery cluster 410. By using the up-down arrangement, the first main pipe 112 is arranged adjacent to the bottom of the battery system 40, and the second main pipe 114 is arranged adjacent to the top of the battery system 40, so as to fully utilize the space reserved in the container, avoid the liquid cooling pipe from occupying a large space, and thus improve the space utilization rate in the container and the volumetric energy density of the container. In addition, by arranging the branch pipe assembly 120 between the first main pipe 112 and the second main pipe 114, the operator can conveniently disassemble, maintain and repair the pipe, and the maintainability of the pipe is enhanced.

[0049] In one embodiment, as shown in Figure 2 and Figure 3 The branch pipe assembly 120 includes a first branch pipe assembly 122 and a second branch pipe assembly 124; the first branch pipe assembly 122 is connected to the first main pipe 112 and each battery cluster 410; and the second branch pipe assembly 124 is connected to the second main pipe 114 and each battery cluster 410.

[0050] The first branch pipe assembly 122 can be an inlet liquid branch pipe assembly 120, and the second branch pipe assembly 124 can be an outlet liquid branch pipe assembly 120. For example, the first branch pipe assembly 122 can be arranged vertically close to the corresponding side of the battery system 40, and based on the first branch pipe assembly 122 being communicated with the first main pipe 112, the first branch pipe assembly 122 can be arranged to extend along the stacking direction of the battery clusters 410 in the battery system 40 from the bottom layer to the top layer, so that the first branch pipe assembly 122 is communicated with the inlet liquid ends of the battery clusters 410; the second branch pipe assembly 124 can be arranged vertically close to the corresponding side of the battery system 40, and based on the second branch pipe assembly 124 being communicated with the second main pipe 114, the second branch pipe assembly 124 can be arranged to extend along the stacking direction of the battery clusters 410 in the battery system 40 from the top layer to the bottom layer, so that the second branch pipe assembly 124 is connected with the outlet liquid ends of the battery clusters 410, respectively. Then, the first main pipe 112 divides the cooling liquid and transmits the cooling liquid to the first branch pipe assembly 122, the cooling liquid is transmitted to the battery clusters 410 through the first branch pipe assembly 122, and the cooling liquid is transmitted back to the second main pipe 114 through the second branch pipe assembly 124 after heat exchange in the battery clusters 410. Then, the heat-exchanged cooling liquid is transmitted back to the liquid cooling unit through the second main pipe 114, so as to realize temperature regulation of the battery clusters 410, avoid the difficulty in maintaining the pipe when the inlet and outlet liquid pipes are arranged below the battery clusters 410, and avoid the large space occupied by the liquid cooling unit when the inlet and outlet liquid pipes are arranged on the same side. Through the up-down arrangement of the pipes, the space utilization of the container is more reasonable, the volume energy density of the container is improved, and the corresponding pipes are convenient to disassemble, assemble, maintain and check.

[0051] In one embodiment, as shown in Figure 3 and Figure 7 The first branch pipe assembly 122 includes a plurality of first branch pipes 1222, and the second branch pipe assembly 124 includes a plurality of second branch pipes 1242. Each first branch pipe 1222 is communicated with each battery cluster 410 one by one, and each second branch pipe 1242 is communicated with each battery cluster 410 one by one. The first branch pipe 1222 is provided with a plurality of first flow dividing members 1224, and the second branch pipe 1242 is provided with a plurality of second flow dividing members 1244. Each first flow dividing member 1224 of the first branch pipe 1222 is communicated with the inlet liquid end of each battery pack in the corresponding battery cluster 410 one by one. Each second flow dividing member 1244 of the second branch pipe 1242 is communicated with the outlet liquid end of each battery pack in the corresponding battery cluster 410 one by one.

[0052] The number of the first branch pipes 1222 and the second branch pipes 1242 can be determined according to the number of the battery clusters 410 in the battery system 40, for example, the number of the first branch pipes 1222 is equal to the number of the battery clusters 410, and the number of the second branch pipes 1242 is equal to the number of the battery clusters 410.

[0053] The first shunt 1224 can be a first three-way pipe, for example, the first branch pipe 1222 includes a plurality of first long pipes, the first end and the second end of the first three-way pipe are communicated between adjacent two long pipes, and the third end of the first three-way pipe is communicated with the corresponding battery pack in the battery cluster 410. The number of the first shunt 1224 arranged in the first branch pipe 1222 is equal to the number of the battery pack in the corresponding battery cluster 410, and then the first branch pipe 1222 is communicated with the liquid inlet end of the corresponding battery pack in the corresponding battery cluster 410 through the first shunt 1224. The second shunt 1244 can be a second three-way pipe, for example, the second branch pipe 1242 includes a plurality of second long pipes, the first end and the second end of the second three-way pipe are communicated between adjacent two second long pipes, and the third end of the second three-way pipe is communicated with the corresponding battery pack in the battery cluster 410. The number of the second shunt 1244 arranged in the second branch pipe 1242 is equal to the number of the battery pack in the corresponding battery cluster 410, and then the second branch pipe 1242 is communicated with the liquid outlet end of the corresponding battery pack in the corresponding battery cluster 410 through the second shunt 1244. It should be noted that the first long pipe and the first three-way pipe can be connected by a clamp, and the second long pipe and the second three-way pipe can be connected by a clamp.

[0054] For example, when the cooling liquid transmission is started, the first main pipe 112 divides and transmits the cooling liquid to each first branch pipe 1222, the first branch pipe 1222 divides and transmits the cooling liquid to each battery pack of the corresponding battery cluster 410 through each first shunt 1224, the cooling liquid exchanges heat in each battery pack, and then the heat-exchanged cooling liquid is transmitted back to the second branch pipe 1242 through the corresponding second shunt 1244, and then the second branch pipe 1242 transmits the heat-exchanged cooling liquid back to the second main pipe 114, and then the heat-exchanged cooling liquid is transmitted back to the liquid cooling unit through the second main pipe 114, so as to realize temperature regulation of each battery cluster 410. Through the up-down arrangement of the pipes, the space reserved in the container is fully utilized, and the liquid cooling pipes do not occupy a large space, thereby improving the space utilization rate in the container and the volume energy density of the container. In addition, by arranging the first branch pipes 1222 and the second branch pipes 1242 between the first main pipe 112 and the second main pipe 114, the pipes can be easily disassembled, maintained and repaired by the operator, and the maintainability of the pipes is improved.

[0055] In one embodiment, as shown in FIG. 1, the battery system 40 includes a plurality of battery clusters 410, and each battery cluster 410 includes a plurality of battery packs 420. Figure 1 and Figure 5As shown, the liquid inlet end height of the first shunt 1224 is greater than the liquid outlet end height of the second shunt 1244; the liquid inlet end height of the first shunt 1224 is the distance from the liquid inlet end of the first shunt 1224 connected to the battery pack to the bottom surface of the battery system 40; and the liquid outlet end height of the second shunt 1244 is the distance from the liquid outlet end of the second shunt 1244 connected to the same battery pack to the bottom surface of the battery system 40.

[0056] As shown, the first shunt 1224 has a liquid inlet end and a liquid outlet end, the liquid inlet end of the first shunt 1224 refers to one end connected to the first branch pipe 1222, and the liquid outlet end of the first shunt 1224 refers to one end connected to the liquid inlet end of the corresponding battery pack. The second shunt 1244 has a liquid inlet end and a liquid outlet end, the liquid outlet end of the second shunt 1244 refers to one end connected to the second branch pipe 1242, and the liquid inlet end of the second shunt 1244 refers to one end connected to the liquid outlet end of the corresponding battery pack.

[0057] By setting the liquid inlet end height of the first shunt 1224 to be greater than the liquid outlet end height of the second shunt 1244, when draining the pipeline, it is ensured that the cooling liquid connected to the corresponding battery cluster 410 can be completely drained, and the splashing of the cooling liquid when the battery pack is removed is avoided.

[0058] In one embodiment, as shown in Figure 6 The second branch pipe 1242 is provided with a first liquid outlet end, and the first liquid outlet end is provided with a first liquid outlet switch 130; the first liquid outlet end is adjacent to the first main pipeline 112.

[0059] The first liquid outlet switch 130 can be a liquid outlet valve, for example, the first liquid outlet switch 130 can be an electromagnetic liquid outlet valve.

[0060] For example, the second branch pipe 1242 has a first end and a second end, the first end of the second branch pipe 1242 is connected to the second main pipeline 114, and the second end of the second branch pipe 1242 is the first liquid outlet end, so that the first liquid outlet end is adjacent to the first main pipeline 112, and when the liquid outlet is started, the cooling liquid in the battery pack can be drained through the first liquid outlet end of the corresponding second branch pipe 1242, and independent liquid outlet of each battery cluster 410 can be realized, which reduces the cooling liquid drained during maintenance of a single battery cluster 410, and also reduces the liquid injection amount after maintenance, thereby improving the maintenance efficiency.

[0061] In one embodiment, as shown in Figure 4 and Figure 5 The first branch pipe 1222 is provided with a first gas outlet end, and the first gas outlet end is provided with a first gas outlet switch 140; the first gas outlet end is adjacent to the second main pipeline 114.

[0062] The first gas outlet switch 140 can be a gas outlet valve, for example, the first gas outlet switch 140 can be an electromagnetic gas outlet valve.

[0063] For example, the first branch pipe 1222 has a first end and a second end, the first end of the first branch pipe 1222 is communicated with the first main pipe 112, and the second end of the first branch pipe 1222 is a first exhaust end, so that the first exhaust end is adjacent to the second main pipe 114, and then the air in the corresponding pipe can be exhausted by opening the first exhaust switch 140, thereby improving the liquid injection efficiency.

[0064] In one embodiment, as shown in FIG. 1, the second main pipe 114 is provided with a second exhaust end, and the second exhaust end is provided with a second exhaust switch 142. Figure 4

[0065] The second exhaust switch 142 can be an exhaust valve, for example, the second exhaust switch 142 can be an electromagnetic exhaust valve.

[0066] For example, the second exhaust end can be arranged at the uppermost of the second main pipe 114, and the second exhaust switch 142 is arranged at the second exhaust end, so that the second exhaust switch 142 is located at the uppermost of all pipes, thereby ensuring that all pipes in the liquid cooling pipe structure 10 are exhausted, and further improving the cooling liquid transmission efficiency.

[0067] In one embodiment, as shown in FIG. 1, the first main pipe 112 is provided with a second liquid discharge end, and the second liquid discharge end is provided with a second liquid discharge switch 132. Figure 1

[0068] The second liquid discharge switch 132 can be a liquid discharge valve, for example, the second liquid discharge switch 132 can be an electromagnetic liquid discharge valve.

[0069] For example, the first main pipe 112 has a first end and a second end, the first end of the first main pipe 112 is communicated with the liquid cooling unit, and the second end of the first main pipe 112 is the second liquid discharge end, so that the second liquid discharge end is at the lowermost of all pipes, and then when the liquid is discharged, the first liquid discharge switch 130 on each second branch pipe 1242 can be opened first to discharge the cooling liquid in each battery pack, and then the second liquid discharge switch 132 of the first main pipe 112 is opened to discharge the cooling liquid in the first main pipe 112, thereby facilitating the maintenance of the corresponding pipe.

[0070] In one example, the first end of the first main pipe 112 is provided with a first total switch, and the first end of the second main pipe 114 is provided with a second total switch, and then the transmission of the cooling liquid can be controlled by controlling the opening and closing of the first total switch and the second total switch.

[0071] ​​In one example, the first main pipe 112 is further provided with a plurality of first fasteners, the second main pipe 114 is further provided with a plurality of second fasteners, the first branch pipe 1222 is provided with a plurality of third fasteners, the second branch pipe 1242 is provided with a plurality of fourth fasteners, and then the first main pipe 112 is fixed to the bottom of the battery system 40 adjacent to the first fasteners, the second main pipe 114 is fixed to the top of the battery system 40 adjacent to the second fasteners, the corresponding first branch pipe 1222 is fixed to the corresponding side of the battery system 40 adjacent to the third fasteners, and the corresponding second branch pipe 1242 is fixed to the corresponding side of the battery system 40 adjacent to the fourth fasteners, thereby enhancing the firmness of the installation of the liquid cooling pipe structure 10. It should be noted that the first fasteners, the second fasteners, the third fasteners and the fourth fasteners can be pipe clamps, horse clamps or clamps, etc.

[0072] In one embodiment, as shown in Figure 8 A cooling device is also provided, which includes the temperature adjusting container 20, the driving module 30 and the liquid cooling pipe structure 10 according to any one of the above embodiments; the driving module 30 is connected to the liquid cooling pipe structure 10 and the temperature adjusting container 20; the temperature adjusting container 20 is used to adjust the temperature of the cooling liquid, and the driving module 30 is used to drive the transmission of the cooling liquid.

[0073] The temperature adjusting container 20 and the driving module 30 constitute a liquid cooling unit. The temperature adjusting container 20 is used to contain the cooling liquid, and the temperature adjusting container 20 is also used to adjust the temperature of the cooling liquid, thereby achieving accurate temperature adjustment of the cooling liquid transmitted to the first main pipe 112. The driving module 30 can include a pump body, which is used to drive the transmission of the cooling liquid, thereby enabling the transmission of the cooling liquid to each battery pack.

[0074] The temperature adjusting container 20 is connected with the driving module 30, the driving module 30 is connected with the first main pipe 112 in the liquid cooling pipe structure 10, the second main pipe 114 in the liquid cooling pipe structure 10 is connected with the temperature adjusting container 20, the first main pipe 112 is arranged adjacent to the bottom of the battery system 40, and the second main pipe 114 is arranged adjacent to the top of the battery system 40; the branch pipe assembly 120 is connected with the first main pipe 112 to form a first transmission channel for transmitting the cooling liquid; the branch pipe assembly 120 is connected with the second main pipe 114 to form a second transmission channel for transmitting the cooling liquid; the branch pipe assembly 120 is used for connecting each battery cluster 410 in the battery system 40, and the cooling liquid is transmitted through the first transmission channel, each battery cluster 410 and the second transmission channel to adjust the temperature of each battery cluster 410, so that the liquid cooling temperature adjustment of each battery cluster 410 is realized. In the application, the first main pipe 112 is arranged adjacent to the bottom of the battery system 40, and the second main pipe 114 is arranged adjacent to the top of the battery system 40 in the up-down arrangement mode, the space reserved in the container is fully utilized, the liquid cooling pipe does not occupy a large space additionally, and therefore the space utilization rate in the container is improved, and the volume energy density of the container is improved. In addition, the branch pipe assembly 120 is arranged between the first main pipe 112 and the second main pipe 114, the pipe is convenient for the operator to disassemble, maintain and repair, and the maintainability of the pipe is improved.

[0075] In one embodiment, a storage energy system is also provided, comprising a battery system and a cooling device as described above; the cooling device is connected with the battery system.

[0076] The storage energy system can be a container type storage energy system, and the storage energy system comprises a container, and the battery system and the cooling device are arranged in the container. The specific description of the battery system and the cooling device can be referred to the specific description of the battery system and the cooling device in the above embodiments, which will not be repeated here.

[0077] Based on the connection between the cooling device and the battery system, the first main pipe is arranged adjacent to the bottom of the battery system and the second main pipe is arranged adjacent to the top of the battery system by arranging the pipes of the cooling device in the up-down arrangement mode, the space reserved in the container is fully utilized, the liquid cooling pipe does not occupy a large space additionally, and therefore the space utilization rate in the container is improved, and the volume energy density of the container is improved. In addition, the branch pipe assembly is arranged between the first main pipe and the second main pipe, the pipe is convenient for the operator to disassemble, maintain and repair, and the maintainability of the pipe is improved, so that the reliability and stability of the storage energy system are improved.

[0078] It should be noted that the storage energy system can also comprise a fire extinguishing system and other equipment, and the specific storage energy system can comprise more components than those described in the above embodiments, or some components can be combined, or different component arrangements can be provided.

[0079] Any combination of the technical features in the above embodiments can be made. For the sake of brevity, the foregoing description is not intended to be exhaustive or to limit the scope of the application to the precise embodiments described. Modifications or variations are possible in light of the above teachings. The embodiments were chosen and described in order to best illustrate the principles of the application and its practical application and to thereby enable others skilled in the art to best utilize the application.

[0080] The above embodiments only express several implementation manners of the application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that, for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A liquid-cooled pipe structure, characterized by, The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system.

2. The liquid cooling pipe structure according to claim 1, characterized by, The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system.

3. The liquid cooling pipe structure according to claim 2, characterized by, The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system.

4. The liquid cooling pipe structure according to claim 3, characterized by, The application relates to a liquid cooling pipeline structure for a battery system.

5. The liquid cooling pipe structure according to claim 3, characterized by, The application relates to a liquid cooling pipeline structure for a battery system.

6. The liquid cooling tube structure according to claim 3, characterized by The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system.

7. The liquid-cooled tubing structure according to any one of claims 1 to 6, characterized by The application relates to a liquid cooling pipeline structure for a battery system.

8. The liquid-cooled tubing structure according to any one of claims 1 to 6, characterized by The application relates to a liquid cooling pipeline structure for a battery system.

9. Cooling device, characterized in that The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system.

10. An energy storage system characterized by, The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. The application relates to a liquid cooling pipeline structure for a battery system. 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