Container energy storage system

Abstract

The embodiment of the invention provides a container energy storage system. The container energy storage system comprises a box body, the box body comprises an electrical cabin, a liquid cooling cabin and an energy storage cabin, and the electrical cabin, the liquid cooling cabin and the energy storage cabin are separated; the energy storage module is arranged in the energy storage cabin; the liquid cooling module is arranged in the liquid cooling cabin, and the liquid cooling module is suitable for cooling the energy storage module through cooling liquid; the electric control module is arranged in the electric cabin, and the electric control module is suitable for being electrically connected with the energy storage module; and the adjusting module is at least suitable for adjusting the temperature and the humidity of the electrical cabin. According to the container energy storage system, the electric control module of the container energy storage system is integrated into the electrical cabin, and the temperature and humidity in the electrical cabin are adjusted through the adjusting module in the electrical cabin, so that the electric control module operates under a good environmental condition, and the service life of the container energy storage system is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage systems, and in particular to a container energy storage system. Background Art

[0002] At present, energy storage systems are developing towards intensification, configuration, and higher volume capacity. The management of temperature and humidity is crucial to ensure the safety and efficiency of batteries and electrical equipment, which requires the energy storage system to have an efficient cooling system.

[0003] In the prior art, liquid cooling technology is used to cool the energy storage system. Coolant is introduced into the liquid cooling pipeline, and the coolant flows through the cooling plate or heat exchange pipeline of the battery pack to control the temperature and humidity of the battery pack in the energy storage system.

[0004] However, the energy storage system also includes electrical equipment of the electric control module, such as DC junction boxes and control cabinets. During the operation of the energy storage system, these electrical equipment will also generate a lot of heat. Due to the use of liquid cooling solutions for cooling, the regulation effect on the ambient temperature and humidity of the above-mentioned electrical equipment is poor, which affects the service life of the energy storage system. Summary of the invention

[0005] An embodiment of the present application provides a container energy storage system, in which an electric control module of the container energy storage system is integrated into an electrical compartment, and the temperature and humidity in the electrical compartment are adjusted by an adjustment module in the electrical compartment, so that the electric control module operates under good environmental conditions, thereby extending the service life of the container energy storage system.

[0006] An embodiment of the present application provides a container energy storage system, comprising: a box body, the box body comprising an electrical compartment, a liquid cooling compartment and an energy storage compartment, the electrical compartment, the liquid cooling compartment and the energy storage compartment being separated; an energy storage module, arranged in the energy storage compartment; a liquid cooling module, arranged in the liquid cooling compartment, the liquid cooling module being suitable for cooling the energy storage module by means of a coolant; an electric control module, arranged in the electrical compartment, the electric control module being suitable for being electrically connected to the energy storage module; and a regulating module, the regulating module being suitable for at least regulating the temperature and humidity of the electrical compartment.

[0007] The container energy storage system of the present invention cools the energy storage module through a liquid cooling module, with high cooling efficiency and good cooling effect. The electric control module is integrated into the electrical compartment to manage and control the operating state of the energy storage module. The temperature and humidity in the electrical compartment are adjusted by the regulating module in the electrical compartment, so that the electric control module operates under good environmental conditions, thereby extending the service life of the container energy storage system.

[0008] In addition, the modular distribution of various parts of the container energy storage system makes the production, assembly, inspection and maintenance of the container energy storage system more convenient and quick.

[0009] In some embodiments, the electric control module includes a convergence device and an electric control device, the convergence device is electrically connected to the energy storage module, the convergence device is suitable for converging the current output by the energy storage module, the electric control device is electrically connected to the energy storage module, the electric control device is suitable for controlling the operating state of the energy storage module, and the convergence device and the electric control device are spaced apart; the electrical compartment includes an openable and closable door, the door defines an air duct, the air duct is connected to the interior of the electrical compartment, and the adjustment module is arranged in the air duct.

[0010] According to some embodiments of the present invention, the adjustment module includes an adjustment device, which is arranged in the air duct, the air outlet of the air duct is opened at the lower end of the cabin door, the air inlet of the air duct is opened at the upper end of the cabin door, and the air duct is connected with the electrical cabin through the air outlet.

[0011] According to some embodiments of the present invention, a first partition is provided in the electrical compartment, the convergence device is located at the lower side of the first partition, the electrical control device is located at the upper side of the first partition, and first air holes are arranged in an array on the first partition to connect the areas on both sides of the first partition.

[0012] According to some embodiments of the present invention, a cover plate is provided on the side of the hatch facing the electrical compartment, and the cover plate is spaced apart from the hatch to define a partial structure of the air duct; the top end of the confluence device on the side facing the hatch contacts with the bottom end of the cover plate and is spaced apart from the hatch surface to define a partial structure of the air duct excluding the cover plate.

[0013] According to some embodiments of the present invention, the confluence device includes a baffle, which includes a first part and a second part, the first part extends along a first direction and contacts a lower edge of the cover plate, the second part extends along a second direction and is fixedly connected to an end face of the confluence device facing the hatch; an opening is provided at the top of the confluence device, the first part is spaced apart from the opening, and the first part is fixedly connected to the first partition.

[0014] According to some embodiments of the present invention, the container energy storage system also includes: a fire-fighting device, which is arranged on the upper side of the first partition, and the fire-fighting device and the electronic control device are separated by a second partition, and the first partition array is provided with a second air vent, the second air vent faces the fire-fighting device, and the first air vent faces the electronic control device.

[0015] According to some embodiments of the present invention, the fire-fighting device includes a fire-fighting pipeline, which extends into the energy storage compartment along a first direction. The electronic control module is electrically connected to the energy storage module via a wire pipe extending into the energy storage compartment along the first direction. The fire-fighting pipeline is spaced apart from the wire pipe along a second direction, and the fire-fighting pipeline is located at the bottom of the wire pipe.

[0016] In some embodiments, a support frame is provided in the energy storage compartment, the energy storage module includes a plurality of battery packs, the plurality of battery packs are stacked on the support frame, and a tray is provided under each of the battery packs, the tray defines a cooling channel, the liquid cooling module includes a liquid cooling unit and a pipeline system, the liquid cooling unit is provided in the liquid cooling compartment, the pipeline system includes a primary pipeline, a secondary pipeline and a tertiary pipeline, the primary pipeline is connected to the liquid cooling unit, and the primary pipeline extends into the energy storage compartment along a first direction, the The primary pipeline is located on one side of the support frame along the third direction, the secondary pipeline is arranged on the support frame and extends along the second direction, the secondary pipeline is communicated with the primary pipeline, the tertiary pipeline is arranged on the support frame and extends along the third direction, the tertiary pipeline is communicated with the secondary pipeline and the cooling channel; the inner diameter r1 of the primary pipeline, the inner diameter r2 of the secondary pipeline and the inner diameter r3 of the tertiary pipeline satisfy: r1:r2=1.86-1.90, r2:r3=1.765-1.805.

[0017] According to some embodiments of the present invention, the plurality of battery packs are arranged in clusters along a first direction, and the battery packs in each cluster are stacked. A high-voltage box is provided at the bottom of each cluster of the battery packs, and the high-voltage box is electrically connected to the battery packs. A high-voltage connecting terminal is provided on the side of the high-voltage box facing away from the primary pipeline, and a bus is provided on the side of the high-voltage box facing away from the primary pipeline, and the high-voltage connecting terminal is electrically connected to the bus, and the bus extends into the electrical compartment along the first direction and is electrically connected to the bus device of the electronic control module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 This is one of the internal structure diagrams of the container energy storage system according to an embodiment of the present invention;

[0020] Figure 2 It is one of the structural schematic diagrams of the electrical compartment in an embodiment of the present invention;

[0021] Figure 3 This is the second structural schematic diagram of the electrical compartment in an embodiment of the present invention;

[0022] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 5 is a schematic structural diagram of a first baffle in an embodiment of the present invention;

[0024] Figure 6 is a schematic structural diagram of a support frame according to an embodiment of the present invention;

[0025] Figure 7 is a schematic structural diagram of a battery pack cluster according to an embodiment of the present invention;

[0026] Figure 8 is a schematic structural diagram of a high-voltage box according to an embodiment of the present invention;

[0027] Fig. 9 is a schematic structural diagram of the connection between the energy storage module and the liquid cooling module according to an embodiment of the present invention;

[0028] Fig.10 This is the second internal structure diagram of the container energy storage system according to an embodiment of the present invention;

[0029] Fig.11 is a schematic structural diagram of a busbar according to an embodiment of the present invention;

[0030] Fig.12 It is a structural schematic diagram of the connection between the high-voltage box and the busbar in an embodiment of the present invention.

[0031] Reference numerals:

[0032] 100. Container energy storage system;

[0033] 110, box body; 111, electrical compartment; 111a, compartment door; 111b, air duct; 111c, air outlet; 111d, first partition; 111e, first air vent; 111f, cover plate; 111g, second air vent;

[0034] 112, liquid cooling cabin; 113, energy storage cabin; 1131, support frame; 1132, busbar;

[0035] 120, energy storage module; 121, battery pack; 122, tray; 123, high-voltage box; 1231, high-voltage connection terminal;

[0036] 130. Liquid cooling module; 131. Liquid cooling unit; 132. Pipeline system; 1321. Primary pipeline; 1322. Secondary pipeline; 1323. Tertiary pipeline;

[0037] 140, electric control module; 141, confluence device; 141a, open mouth; 1411, baffle; 1411a, first part; 1411b, second part; 142, electric control device; 143, wire tube;

[0038] 150. adjustment module; 151. adjustment device;

[0039] 160. Fire-fighting equipment; 161. Fire-fighting pipelines.

[0040] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] The existing energy storage system is developing towards intensive, configured, and higher volume capacity, which requires the energy storage system to have an efficient cooling system. In the existing technology, liquid cooling technology is used to cool the energy storage system. The coolant is passed through the liquid cooling pipeline, and the coolant flows through the cooling plate or heat exchange pipeline of the battery pack to control the temperature and humidity of the battery pack in the energy storage system.

[0043] However, the energy storage system also includes electrical equipment of the electric control module, such as DC junction boxes and control cabinets. During the operation of the energy storage system, these electrical equipment will also generate a lot of heat. Due to the use of liquid cooling solutions for cooling, the regulation effect on the ambient temperature and humidity of the above-mentioned electrical equipment is poor, which affects the service life of the energy storage system.

[0044] In view of this, an embodiment of the present application provides a container energy storage system, in which an electric control module of the container energy storage system is integrated into an electrical compartment, and the temperature and humidity in the electrical compartment are adjusted by an adjustment module in the electrical compartment, so that the electric control module operates under good environmental conditions, thereby extending the service life of the container energy storage system.

[0045] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0046] refer to Figures 1 to 12 An embodiment of the present application provides a container energy storage system 100 , which may include: a box body 110 , an energy storage module 120 , a liquid cooling module 130 , an electric control module 140 and a regulating module 150 .

[0047] The box 110 is the outer shell of the entire energy storage system, providing physical protection and environmental isolation. The interior of the box 110 is divided into multiple independent compartments, including an electrical compartment 111, a liquid cooling compartment 112, and an energy storage compartment 113. The electrical compartment 111, the liquid cooling compartment 112, and the energy storage compartment 113 can be physically isolated by partitions to optimize management according to different functional requirements.

[0048] The energy storage module 120 is disposed in the energy storage compartment 113. The energy storage module 120 is generally composed of a plurality of battery cells (such as a battery pack cluster described below). The energy storage module 120 stores electrical energy and releases the electrical energy for use when an external electrical device needs it.

[0049] The liquid cooling module 130 is disposed in the liquid cooling compartment 112. The liquid cooling module 130 is suitable for cooling the energy storage module 120 by means of a coolant. Exemplarily, the liquid cooling module 130 can reduce the temperature of the energy storage module 120 by circulating a coolant (such as water or ethylene glycol), thereby preventing the energy storage module 120 from overheating and improving the operating efficiency and safety of the container energy storage system 100.

[0050] The electric control module 140 is arranged in the electrical compartment 111 . The electric control module 140 is suitable for being electrically connected to the energy storage module 120 . The electric control module 140 is responsible for the electrical connection and control of the energy storage module 120 , including various electrical equipment and control circuits. The electric control module 140 is used to manage the operating status of the container energy storage system 100 .

[0051] The regulating module 150 is at least adapted to regulate the temperature and humidity of the electrical compartment 111. Since the equipment in the electrical compartment 111 generates heat during operation, the regulating module 150 dissipates heat through air flow and maintains a suitable humidity level, which is beneficial to prolonging the service life of the electric control module 140.

[0052] Optionally, in some embodiments, the regulating module 150 may also be used to adjust the pressure balance in the electrical compartment 111 , or the regulating module 150 may also be used to control the noise during operation of the container energy storage system 100 .

[0053] The container energy storage system 100 of the present invention cools the energy storage module 120 through the liquid cooling module 130, with high cooling efficiency and good cooling effect. The electric control module 140 is integrated into the electrical compartment 111 to manage and control the operating status of the energy storage module 120. The temperature and humidity in the electrical compartment 111 are adjusted by the adjustment module 150 in the electrical compartment 111, so that the electric control module 140 operates under good environmental conditions, extending the service life of the container energy storage system 100. In addition, the modular distribution of the various parts of the container energy storage system 100 makes the production, assembly, inspection and maintenance of the container energy storage system 100 more convenient and quick.

[0054] In addition, the temperature and humidity in the electrical compartment 111 are adjusted by the adjustment module 150, which has a good control and adjustment effect on the environment in the electrical compartment 111, and also avoids the influence of the water vapor emitted from the liquid cooling module 130 on the electric control module 140 in the electrical compartment 111, which is beneficial to extending the service life of the container energy storage system 100.

[0055] refer to Figure 1 and Figure 2 In some embodiments, the electric control module 140 includes a busbar 141 and an electric control device 142. The busbar 141 is electrically connected to the energy storage module 120. The busbar 141 is suitable for busing the current output by the energy storage module 120. Exemplarily, the busbar 141 may include a busbar cabinet and a busbar cable (or a busbar 1132 described below). The busbar cable is connected to the busbar cabinet and the energy storage module 120, respectively. When the busbar cable is connected to the battery cells of the energy storage module 120, the battery cells may be connected in series or in parallel to converge the current output by the energy storage module 120.

[0056] The electric control device 142 is electrically connected to the energy storage module 120. The electric control device 142 is suitable for controlling the operating state of the energy storage module 120. For example, the electric control device 142 can monitor the charging and discharging state of the energy storage module 120, manage the flow of electric energy, and perform protective measures (such as overload protection and short circuit protection). The electric control device 142 can ensure that the energy storage module 120 operates in the best state and prolong the service life of the energy storage module 120.

[0057] The separation of the converging device 141 and the electric control device 142 helps to reduce the electromagnetic interference between the converging device 141 and the electric control device 142 and improve the reliability of the container energy storage system 100. At the same time, this layout also facilitates the maintenance and repair of the electric control module 140.

[0058] refer to Figure 3The electrical compartment 111 includes an openable and closable door 111 a , which defines an air duct 111 b . The air flow path is optimized through the air duct 111 b , which is beneficial to improving the heat dissipation effect of the electric control module 140 in the electrical compartment 111 .

[0059] The air duct 111b is connected to the electrical compartment 111, and the regulating module 150 is arranged in the air duct 111b. Through the air duct 111b, the regulating module 150 can effectively introduce cooling air into the electrical compartment 111, take away the heat generated when the equipment is running, and maintain a suitable humidity level. This is conducive to improving the protection effect of the electric control module 140, extending the service life of the electric control module 140, and ensuring the stable operation of the container energy storage system 100.

[0060] refer to Figure 3 According to some embodiments of the present invention, the regulating module 150 includes a regulating device 151, which is responsible for cooling the air to a desired temperature so as to maintain a suitable operating environment in the electrical compartment 111. Exemplarily, the regulating device 151 may include components such as a compressor, a condenser, and an evaporator, which can effectively reduce the air temperature and adjust the air humidity when necessary.

[0061] The regulating device 151 is arranged in the air duct 111b, the air outlet 111c of the air duct 111b is opened at the lower end of the door 111a, the air inlet of the air duct 111b is opened at the upper end of the door 111a, and the air duct 111b is connected with the electrical compartment 111 through the air outlet 111c. An airflow circulation path is formed in the electrical compartment 111, and the cold air output by the regulating device 151 enters the electrical compartment 111 from the lower end of the door 111a, passes through the electric control module 140, and then returns to the air duct 111b through the air inlet, and is cooled by the regulating device 151 and then output, and the cooled air enters the electrical compartment 111 again, taking away the heat generated by the electric control module 140. In this way, a stable airflow circulation path is formed in the electrical compartment 111, which not only improves the heat dissipation efficiency, but also helps to ensure that the temperature in the electrical compartment 111 remains uniform, avoiding the occurrence of local overheating. Moreover, this design can effectively control the environment in the electrical compartment 111 without affecting the sealing of the electrical compartment 111. By controlling the working state of the regulating device 151, the temperature and humidity in the compartment can be accurately controlled to ensure that the electric control module 140 and other electrical equipment operate under optimal conditions.

[0062] In a specific embodiment, when the temperature sensor of the regulating device 151 detects that the temperature in the electrical compartment 111 is higher than the set value T0, the regulating device 151 starts cooling the air, and the cold air flows downward along the air duct 111b from the air outlet 111c into the lower part of the electrical compartment 111, and then passes through the two sides of the confluence device 141 to enter the confluence device 141, and cools the heating components such as the copper busbar inside the confluence device 141 by means of heat convection and the like. Then, the cold air enters the electrical control device 142 through the vent hole at the lower part of the electrical control device 142, and cools the heating components such as the copper busbar inside the electrical control device 142 by means of heat convection and the like during the upward flow process. The cold air is discharged from the electrical control device 142 through the vent hole at the top of the electrical control device 142, flows back to the air inlet of the air duct 111b, and is cooled by the regulating device 151. When the temperature sensor detects that the temperature in the electrical compartment 111 drops to the set value T1, the cooling stops.

[0063] When the temperature sensor detects that the temperature in the electrical compartment 111 is lower than the set value T2, the regulating device 151 starts to produce hot air, heats the air in the electrical compartment 111, and circulates it through the air duct 111b to protect the normal startup and operation of the equipment in the electrical compartment 111. When the temperature sensor of the regulating device 151 detects that the temperature in the electrical compartment 111 drops to the set value T3, the heating is stopped.

[0064] Optionally, the confluence device 141 can be configured according to project requirements. In one embodiment, the container energy storage system 100 can be composed of 12 battery pack clusters, and the battery pack clusters are converged in the confluence device 141 with 12 clusters as a stack, and then connected to a 2500kW centralized PCS (power converter) through power cables after parallel convergence. In another embodiment, the container energy storage system 100 can also be composed of 12 battery pack clusters, and the battery pack clusters are a stack of 6 clusters on the same side of the container, and each stack is converged separately in the confluence device 141. After the two stacks are converged separately, they are respectively connected to a 1250kW centralized PCS through power cables.

[0065] For the above two configurations, since the power cable connected to the PCS is fixed on the conduit inside the conduit device 141, and each positive and negative pole of each battery stack has a conduit, the container energy storage system 100 in the first embodiment can have two conduits, and the container energy storage system 100 in the second embodiment can have four conduits, and the installation position of each conduit is different.

[0066] A cable trench is provided at the bottom of the box body 110 , and the power cable passes through the cable entry and exit holes at the bottom of the electrical compartment 111 through the cable trench and enters the converging device 141 .

[0067] The cable channel from the bottom of the container installation foundation enters the confluence device 141 through the inlet and outlet holes on the container bottom plate.

[0068] Among them, the inlet and outlet holes can be waist-shaped holes, there can be multiple waist-shaped holes, there can be multiple waist-shaped holes, and the waist-shaped holes can be provided with detachable end covers. When dealing with different layout schemes of the container energy storage system 100, the end covers at different positions are removed.

[0069] refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 According to some embodiments of the present invention, a first partition 111d is provided in the electrical compartment 111, and the confluence device 141 is located at the lower side of the first partition 111d. Since the confluence device 141 may generate more heat when working, placing it at the lower side of the first partition 111d helps to utilize the natural convection effect to promote the upward flow of hot air and heat exchange with the heat-generating components of the confluence device 141. The electric control device 142 is located at the upper side of the first partition 111d. The electric control device 142 usually requires a more stable temperature environment. By placing the electric control device 142 at the upper side, it can avoid being directly affected by the confluence device 141 at the lower side, and it is also convenient for maintenance and operation. The electrical compartment 111 is divided into two upper and lower areas by the first partition 111d, and the air flow path is optimized by physically isolating the confluence device 141 and the electric control device 142.

[0070] Furthermore, in order to reduce direct interference of the heat of the converging device 141 on the electric control device 142 , the converging device 141 and the electric control device 142 may be staggered along a horizontal direction (hereinafter referred to as a first direction).

[0071] The first partition 111d is provided with a first air hole 111e array to connect the areas on both sides of the first partition 111d. In this way, the air flow in the electrical compartment 111 is smoother, and the heat can be effectively discharged from the area of ​​the confluence device 141 and taken away through the air duct 111b system. This layout not only improves the heat dissipation efficiency, but also ensures that the electric control device 142 and the confluence device 141 operate under suitable temperature conditions.

[0072] refer to Figure 3 and Figure 4According to some embodiments of the present invention, a cover plate 111f is provided on one side of the door 111a facing the electrical compartment 111, and the cover plate 111f is spaced apart from the door 111a to define a partial structure of the air duct 111b. The top end of the confluence device 141 on the side facing the door 111a contacts the bottom end of the cover plate 111f, and is spaced apart from the surface of the door 111a to define a partial structure of the air duct 111b except for the cover plate 111f. In this way, the air duct 111b is defined by the cover plate 111f and the confluence device 141, which reduces the manufacturing difficulty of the air duct 111b, and because a side wall of the confluence device 141 constitutes a partial structure of the air duct 111b, the cold air is initially cooled on the confluence device 141 during the flow in the air duct 111b, which is conducive to improving the cooling effect of the confluence device 141.

[0073] refer to Figure 4 According to some embodiments of the present invention, the confluence device 141 may include a baffle 1411, and the baffle 1411 includes a first part 1411a and a second part 1411b. The first part 1411a extends along a first direction and contacts the lower edge of the cover plate 111f to prevent the airflow in the air duct 111b from flowing into the electrical compartment 111 from the lower edge of the cover plate 111f, thereby reducing the cooling effect on the confluence device 141.

[0074] The second part 1411b extends along the second direction and is fixedly connected to the end face of one side of the confluence device 141 facing the cabin door 111a. In other words, the baffle 1411 can be an L-shaped plate. The first part 1411a extends horizontally, and the second part 1411b extends along the vertical direction (second direction). The second part 1411b of the baffle 1411 blocks the gap between the lower end of the cover plate 111f and the top end of the side wall of the confluence device 141, thereby improving the sealing effect of the air duct 111b and improving the temperature control effect in the electrical cabin 111.

[0075] The top of the confluence device 141 is provided with an opening 141a, the first part 1411a is spaced apart from the opening 141a, and the first part 1411a is fixedly connected to the first partition 111d. In this way, the confluence device 141 can quickly dissipate heat through the top opening 141a, thereby improving the heat dissipation effect. In addition, the first part 1411a is spaced apart from the opening 141a at the top of the confluence device 141, and the first partition 111d can effectively block dust and other debris falling from above into the confluence device 141, thereby extending the service life of the confluence device 141.

[0076] It can be understood that, for ease of understanding, the first direction mentioned in this application can be Figure 6 The X direction in the second direction can be Figure 6 The Z direction in the figure, the third direction can be Figure 6 in the Y direction.

[0077] Optionally, in order to improve the structural strength of the first partition plate 111 d , a reinforcing square tube may be fixedly connected to the first partition plate 111 d , and the reinforcing square tube may be fixedly connected to the inner wall of the electrical compartment 111 .

[0078] Further, the interval L between the first portion 1411a and the opening 141a may satisfy: 50 mm ≤ L ≤ 100 mm. Exemplarily, L may be 50 mm, 60 mm, 70 mm, 80 mm, 90 mm or 100 mm. The first portion 1411a and the opening 141a have a suitable interval size L, so that the first portion 1411a has a good barrier effect on dust and other debris, and is also conducive to improving the heat dissipation effect of the converging device 141.

[0079] refer to Figure 2 and Figure 3 According to some embodiments of the present invention, the container energy storage system 100 may further include a fire-fighting device 160, which may be used to suppress and control a fire in the container energy storage system 100 in an emergency. The fire-fighting device 160 is disposed on the upper side of the first partition 111d, and the fire-fighting device 160 is separated from the electric control device 142 by the second partition, which helps prevent the electric control device 142 from being directly affected when the fire-fighting device 160 is activated, and also helps protect the electric control device 142 from potential fire damage.

[0080] The first partition 111d array is provided with second air holes 111g, the second air holes 111g face the fire fighting device 160, and the first air holes 111e face the electric control device 142. The design of the second air holes 111g allows air to flow, ensuring that the fire fighting device 160 can detect the temperature and smoke changes in the cabin under normal circumstances, so as to respond to the fire in time. At the same time, the second air holes 111g also provide another air flow path, and the cold air discharged from the air outlet can pass through the first air holes 111e and return to the air inlet of the air duct 111b, or the cold air discharged from the air outlet can also pass through the second air holes 111g and return to the air inlet of the air duct 111b, so that the gas discharged by the regulating device 151 can be distributed throughout the electrical cabin 111, which is conducive to improving the uniformity of temperature and humidity in the electrical cabin 111, thereby ensuring that the electric control module 140 can operate under good environmental conditions.

[0081] Optionally, the fire-fighting device 160 may include fire-fighting gas cylinders, fire-fighting host computers and other fire-fighting control equipment, as well as supporting wire ducts, cables, etc., wherein the fire-fighting gas cylinder may be arranged above the first partition 111d and mounted on the inner wall of the electrical compartment 111 through a clamp. A fire-fighting gas pipe (hereinafter referred to as a fire-fighting pipeline 161) is arranged on the top of the electrical compartment 111, one end of the fire-fighting gas pipe is connected to the fire-fighting gas cylinder with a hose, and the other end leads to the energy storage compartment 113.

[0082] In addition, a fire maintenance door is arranged on the inner wall of the non-cabin door 111a side of the electrical compartment 111, and the fire host is installed inside the fire maintenance door. Generally, the fire host can be arranged at the bottom of the fire maintenance door for easy access by operators.

[0083] According to some embodiments of the present invention, the fire fighting device 160 includes a fire fighting pipeline 161. Exemplarily, the fire fighting pipeline 161 may include the fire fighting gas pipe mentioned above, and may also include a fire fighting water pipe and a fire fighting line pipe. The fire fighting pipeline 161 transports a fire extinguishing agent (such as gas or liquid) to deal with the fire risk in the energy storage cabin 113. The fire fighting pipeline 161 extends into the energy storage cabin 113 along a first direction to ensure that the fire extinguishing agent can quickly cover the entire energy storage cabin 113.

[0084] The electric control module 140 is electrically connected to the energy storage module 120 through the wire tube 143 extending into the energy storage compartment 113 along the first direction, and the fire protection pipeline 161 is electrically connected to the wire tube 143 along the second direction ( Figure 6 The spacing of the two components (in the Z direction) helps prevent interference or damage to the electrical connections when the fire protection device 160 is activated, while also facilitating maintenance and repair.

[0085] Furthermore, the fire protection pipeline 161 may be located at the lower side of the wire pipe 143. This arrangement helps to ensure that when the fire extinguishing agent is released, the wire pipe 143 will not be directly impacted by the fire extinguishing agent, thereby reducing the potential impact on the electrical connection.

[0086] It can be understood that the interval between the fire protection pipeline 161 and the wire pipe 143 is at least more than 50 mm to improve the safety of the wire pipe 143 during operation.

[0087] refer to Figure 1 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 In some embodiments, a support frame 1131 is provided in the energy storage compartment 113, and the energy storage module 120 includes a plurality of battery packs 121, and the plurality of battery packs 121 are stacked on the support frame 1131, and a tray 122 is provided under each battery pack 121, and the tray 122 defines a cooling channel. The liquid cooling module 130 includes a liquid cooling unit 131 and a pipeline system 132, and the liquid cooling unit 131 is provided in the liquid cooling compartment 112, and the pipeline system 132 includes a primary pipeline 1321, a secondary pipeline 1322, and a tertiary pipeline 1323, and the primary pipeline 1321 is connected to the liquid cooling unit 131, and the primary pipeline 1321 extends into the energy storage compartment 113 along a first direction, and the primary pipeline 1321 is located on the support frame 1131 along a third direction ( Figure 6 The secondary pipeline 1322 is arranged on the support frame 1131 along the second direction ( Figure 6The secondary pipeline 1322 is connected to the primary pipeline 1321, and the tertiary pipeline 1323 is arranged on the support frame 1131 and extends along the third direction ( Figure 6 The tertiary pipeline 1323 extends in the X direction, and is connected to the secondary pipeline 1322 and the cooling channel.

[0088] In this way, the coolant output by the liquid cooling unit 131 enters the cooling channel in the tray 122 through the primary pipeline 1321, the secondary pipeline 1322, and the tertiary pipeline 1323, and after heat exchange with the battery pack 121, it flows back to the liquid cooling unit 131 through the tertiary pipeline 1323, the secondary pipeline 1322, and the primary pipeline 1321 of another branch for heat exchange. The cooled coolant circulates in the pipeline system 132 to cool the battery pack 121.

[0089] In a specific embodiment, the arrangement of the battery pack 121 may be as follows: the support frame 1131 has a plurality of columns, which are respectively located on both sides of the energy storage module 120 along the first direction, and the top of the column is welded to the crossbeam at the top of the box 110, and the bottom is welded to the crossbeam at the bottom of the box 110. A guide rail is arranged on both sides of the bottom of each battery pack 121 along the width direction, and the guide rail mainly plays the role of supporting the battery pack 121. The guide rail extends along the third direction of the box 110 and can be welded or fixed to the column with bolts.

[0090] Each guide rail is divided into two layers, the upper layer of the guide rail is bent into an L shape by sheet metal, one side surface along the vertical direction is connected to the column by welding or bolts, and one side surface along the horizontal direction is in contact with the lower surface of the battery pack 121, which plays a role in supporting the battery pack 121 in the vertical direction. The lower layer of the guide rail is also bent into an L shape by sheet metal, wherein one side surface along the vertical direction is connected to the column by welding or bolts, and one side surface along the horizontal direction is in contact with the upper sheet metal of the guide rail, which plays a role in supporting the upper sheet metal of the guide rail in the vertical direction. The front end surface of the lower layer of the guide rail is mainly used to fix the battery pack 121 and ground the battery pack 121.

[0091] When installing, the battery pack 121 is first placed on the upper layer of the guide rail, and is pushed by the tooling along the X direction onto the support frame 1131. When the front end surface of the battery pack 121 is aligned with the front end surface of the lower layer of the guide rail, the battery pack 121 is installed in place.

[0092] At this time, use the mounting plate to connect the battery pack 121 to the lower layer of the guide rail. There are four bolt through holes on the mounting plate, which are aligned with the two bolt fixing holes on the tray 122 and the two bolt fixing holes on the lower layer of the guide rail. Nuts or wire screw sleeves are embedded behind the bolt fixing holes on the battery pack 121, and two nuts are embedded on the front end of the lower layer of the guide rail. Then, bolts are used to connect the nuts or wire screw sleeves behind these bolt fixing holes.

[0093] For the grounding of the battery pack 121, since the tray 122 is made of aluminum alloy or sheet metal, the mounting plate can be made of hot-dip galvanized plate. When the mounting plate and the tray 122 are firmly installed with bolts, the battery pack 121 and the mounting plate form an equipotential connection. After the two bolts on the upper part of the mounting plate are fixed, the lower part of the mounting plate is connected to the lower rail with bolts. Before installing the lowest bolt, first place the terminal at one end of the grounding wire on the mounting plate, and align the center of the terminal wiring hole with the center of the bolt fixing hole, and then use bolts to connect the mounting plate to the lower rail. The terminal at the other end of the grounding wire is fixed to the column with bolts, and the surface of the column is spray-painted. The nut of the mounting bolt that fixes the grounding terminal on the column is a rivet nut. When spraying, the rivet nut is covered with a mask. After the spraying is completed, conductive paint is applied to the masking position to enhance conductivity and improve protection performance.

[0094] Through the above installation and grounding method of the battery pack 121, not only the reliability and protection of the battery pack 121 under various working conditions can be improved, but also the reliable grounding of the battery pack 121 can be ensured.

[0095] According to some embodiments of the present invention, the inner diameter r1 of the primary pipeline 1321, the inner diameter r2 of the secondary pipeline 1322, and the inner diameter r3 of the tertiary pipeline 1323 satisfy: r1:r2=1.86-1.90, r2:r3=1.765-1.805. Exemplarily, the ratio of r1 to r2 may be 1.86, 1.87, 1.88, 1.89, or 1.90, and the ratio of r2 to r3 may be 1.775, 1.785, 1.795, or 1.805. In this way, a larger inner diameter of the pipeline is used for the main channel (primary pipeline 1321) to support high flow of coolant delivery, while a smaller inner diameter of the pipeline is used for the branch channel (tertiary pipeline 1323) to accurately control the flow to each battery pack 121. A reasonable ratio of the inner diameters of the primary pipeline 1321, the secondary pipeline 1322, and the tertiary pipeline 1323 helps control the pressure drop in the liquid cooling module 130, ensuring that the coolant can maintain a sufficient flow rate and pressure in the pipeline system 132, so that the coolant reaching each battery pack 121 is more uniform, ensuring that the temperature of each battery pack 121 remains within an ideal range.

[0096] It should be noted that the inner diameters of the primary pipeline 1321, the secondary pipeline 1322 and the tertiary pipeline 1323 affect each other. During design, when the ratio of r1 to r2 changes, the ratio of r2 to r3 changes accordingly.

[0097] refer to Figure 7 , Fig. 9 , Fig.10 , Fig.11 and Fig.12According to some embodiments of the present invention, multiple battery packs 121 are arranged in multiple clusters along a first direction, and each cluster of battery packs 121 is stacked, which helps to optimize space utilization and ensure that each battery pack 121 can effectively perform thermal management and electrical connections.

[0098] A high voltage box 123 is provided at the bottom of each battery pack 121 . The high voltage box 123 is electrically connected to the battery pack 121 . The high voltage box 123 is responsible for managing the high voltage output of the battery pack 121 and providing necessary protection and control functions for the battery pack 121 .

[0099] A high-voltage connection terminal 1231 is provided on the side of the high-voltage box 123 facing away from the primary pipeline 1321, and a bus 1132 is provided on the side of the high-voltage box 123 facing away from the primary pipeline 1321. The high-voltage connection terminal 1231 is electrically connected to the bus 1132. The bus 1132 extends into the electrical compartment 111 along the first direction and is electrically connected to the bus device 141 of the electronic control module 140.

[0100] The energy storage module 120 of the prior art needs to be connected to the confluence part of the electrical compartment 111 by a power cable to realize the charging and discharging function of the energy storage module 120. Specifically, the connection terminal on the high-voltage box 123 is connected to the confluence part in the confluence cabinet by a power cable with a terminal. Generally, most container energy storage systems 100 set the connection terminal at the front end of the high-voltage box 123, and the quick connector at one end of the power cable is connected to the terminal, and then goes down to the bottom of the high-voltage box 123, and then connected to the electrical compartment 111 through the bottom wiring groove, and finally connected to the confluence part of the confluence device 141.

[0101] In such a layout, since the lower parts of the primary pipeline 1321 and the secondary pipeline 1322 of the liquid cooling module 130 are arranged in the front bottom area of ​​the high-pressure box 123 , the power cable is close to the pipeline system 132 .

[0102] When the system is working or under maintenance, the pipeline system 132 may leak, which will affect the safety of the container energy storage system 100. In this embodiment, the high-voltage connection terminal 1231 is arranged on the side of the high-voltage box 123 away from the primary pipeline 1321, and the bus 1132 is arranged nearby, and connected to the bus device 141 through the bus 1132. In this way, the pipeline system 132 and the bus 1132 are spaced apart in space to achieve electrical and water isolation, thereby improving the safety of the container energy storage system 100.

[0103] At the same time, the bus 1132 can be arranged at the bottom of the box body 110 before installing the high-voltage box 123. When installing the high-voltage box 123, the bus 1132 can be directly connected to the high-voltage connection terminal 1231 of the high-voltage box 123, which can avoid the trouble of routing multiple cables, save labor time and materials, and reduce costs.

[0104] In a specific embodiment, a pair of busbars 1132 can be arranged on both sides of the central axis in the length direction of the box body 110, and each pair of busbars 1132 is divided into upper and lower paths, each serving as a positive electrode and a negative electrode for busbar. The two rows are connected by an insulator, and the height of the insulator h0 ≥ 30 mm, which plays a role in supporting the upper busbar 1132 on the one hand, and plays an electrical insulation role on the other hand. A support column is arranged at the bottom of the lower busbar 1132, and the support column is connected to the bottom plate of the box body 110 by welding or bolts. The support column and the lower busbar 1132 are connected by an insulator, and the insulator also plays a role in supporting the upper busbar 1132 and electrical insulation.

[0105] To ensure installation accuracy, each layer of busbars 1132 can be composed of several busbar monomers, the length of each busbar monomer L≤1800mm, and adjacent busbars 1132 are overlapped with busbar monomers of the same specification to achieve electrical connection and meet electrical clearance.

[0106] Furthermore, in order to facilitate installation and maintenance of the high-voltage box 123 , the height difference h1 between the axes of the two high-voltage connection terminals 1231 of the high-voltage box 123 should satisfy h1=h0+T, where T is the thickness of the busbar 1132 .

[0107] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0108] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0109] In the description of the present invention, "plurality" means two or more.

[0110] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0111] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0112] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0113] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

[0114] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A container energy storage system, characterized in that: include: A box body, the box body comprising an electrical compartment, a liquid cooling compartment and an energy storage compartment, the electrical compartment, the liquid cooling compartment and the energy storage compartment being separated; An energy storage module is arranged in the energy storage cabin; A liquid cooling module, disposed in the liquid cooling cabin, the liquid cooling module being suitable for cooling the energy storage module by means of a cooling liquid; An electric control module, disposed in the electrical compartment, and adapted to be electrically connected to the energy storage module; A regulating module, wherein the regulating module is at least suitable for regulating the temperature and humidity of the electrical compartment.

2. The container energy storage system according to claim 1, characterized in that: The electric control module includes a converging device and an electric control device. The converging device is electrically connected to the energy storage module and is suitable for converging the current output by the energy storage module. The electric control device is electrically connected to the energy storage module, and the electric control device is suitable for controlling the operating state of the energy storage module. The confluence device and the electric control device are arranged at intervals; The electrical compartment includes an openable and closable door, the door defines an air duct, the air duct is communicated with the interior of the electrical compartment, and the regulating module is arranged in the air duct.

3. The container energy storage system according to claim 2, characterized in that: The regulating module comprises a regulating device, and the regulating device is arranged in the air duct. The air outlet of the air duct is opened at the lower end of the cabin door, the air inlet of the air duct is opened at the upper end of the cabin door, and the air duct is connected with the electrical cabin through the air outlet.

4. The container energy storage system according to claim 3, characterized in that: A first partition is provided in the electrical compartment, the confluence device is located at the lower side of the first partition, the electric control device is located at the upper side of the first partition, and first air holes are arranged in an array on the first partition to connect the areas on both sides of the first partition.

5. The container energy storage system according to claim 4, characterized in that: A cover plate is provided on one side of the door facing the electrical compartment, and the cover plate is spaced apart from the door to define a partial structure of the air duct. The top end of the confluence device on the side facing the hatch contacts the bottom end of the cover plate and is spaced apart from the hatch surface to define a partial structure of the air duct excluding the cover plate.

6. The container energy storage system according to claim 5, characterized in that: The confluence device comprises a baffle, and the baffle comprises a first portion and a second portion, the first portion extends along a first direction and contacts a lower edge of the cover plate, and the second portion extends along a second direction and is fixedly connected to an end surface of the confluence device facing the hatch; The top of the confluence device is provided with an opening, the first part is spaced apart from the opening, and the first part is fixedly connected to the first partition.

7. The container energy storage system according to claim 4, characterized in that: Also includes: a fire-fighting device, the fire-fighting device being arranged on the upper side of the first partition, the fire-fighting device being separated from the electric control device by a second partition, The first partition array is provided with second air holes, the second air holes face the fire fighting device, and the first air holes face the electric control device.

8. The container energy storage system according to claim 7, characterized in that: The fire-fighting device includes a fire-fighting pipeline, which extends into the energy storage compartment along a first direction, and the electric control module is electrically connected to the energy storage module via a wire pipe extending into the energy storage compartment along the first direction. The fire-fighting pipeline is spaced apart from the wire pipe along the second direction, and the fire-fighting pipeline is located at the lower side of the wire pipe.

9. The container energy storage system according to claim 1, characterized in that: A support frame is provided in the energy storage compartment, the energy storage module includes a plurality of battery packs, the plurality of battery packs are stacked on the support frame, and a tray is provided under each of the battery packs, the tray defines a cooling channel, The liquid cooling module includes a liquid cooling unit and a pipeline system, wherein the liquid cooling unit is arranged in the liquid cooling cabin, and the pipeline system includes a primary pipeline, a secondary pipeline and a tertiary pipeline, wherein the primary pipeline is connected to the liquid cooling unit and extends into the energy storage cabin along a first direction, and the primary pipeline is located on one side of the support frame along a third direction. The secondary pipeline is arranged on the support frame and extends along the second direction. The secondary pipeline is communicated with the primary pipeline. The tertiary pipeline is arranged on the support frame and extends along the third direction. The tertiary pipeline is connected with the secondary pipeline and the cooling channel; the inner diameter r1 of the primary pipeline, the inner diameter r2 of the secondary pipeline and the inner diameter r3 of the tertiary pipeline satisfy: r1:r2=1.86-1.90, r2:r3=1.765-1.

805.

10. The container energy storage system according to claim 9, characterized in that: The plurality of battery packs are arranged in a plurality of clusters along a first direction, each cluster of battery packs is stacked, a high-voltage box is provided at the bottom of each cluster of battery packs, the high-voltage box is electrically connected to the battery pack, a high-voltage connection terminal is provided on a side of the high-voltage box away from the primary pipeline, a bus is provided on a side of the high-voltage box away from the primary pipeline, the high-voltage connection terminal is electrically connected to the bus, The bus bar extends into the electrical compartment along a first direction and is electrically connected to the bus bar device of the electric control module.

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