energy storage system

Abstract

The application discloses an energy storage system, and belongs to the technical field of energy storage heat dissipation. The energy storage system comprises a support frame, a wind providing assembly and a plurality of battery packs. In the working process of the battery packs, the heat generated by the battery cells in the battery packs can be conducted to the heat conduction plates. The wind providing assembly blows the wind into the ventilation network of the support frame through the main air inlet of the support frame, and the wind can be blown to the heat conduction plates of the corresponding battery packs through a plurality of main air outlets of the support frame, so as to take away the heat on the corresponding heat conduction plates and realize the heat dissipation of the battery packs. In this way, the energy storage system in the application can realize the dissipation of the heat generated by the battery cells in the battery packs through the ventilation network in the support frame and the heat conduction plates of the battery packs. Compared with single air cooling heat dissipation or liquid cooling heat dissipation, the energy storage system in the application reduces the manufacturing cost of the energy storage system on the basis of ensuring good heat dissipation effect of the battery packs.

Description

Technical Field

[0001] This application relates to the field of energy storage and heat dissipation technology, and in particular to an energy storage system. Background Technology

[0002] With the increasing depletion of traditional energy sources and the numerous problems exposed in their production and use, the development of new energy sources has become a general consensus. Among these, electrochemical energy storage components such as battery packs have been widely used in the field of energy storage.

[0003] To meet greater power demands, multiple battery packs can be installed within a frame to form an energy storage system. During operation, the battery packs generate a significant amount of heat; therefore, to ensure their safe use, the energy storage system requires a heat dissipation structure to cool them.

[0004] However, current air-cooled heat dissipation systems have poor heat dissipation performance, while liquid-cooled heat dissipation systems with better heat dissipation performance are expensive and cannot meet the heat dissipation needs of current energy storage systems. Utility Model Content

[0005] This application provides an energy storage system. It solves the problems of poor heat dissipation and high manufacturing cost in existing energy storage systems. The technical solution is as follows: On the one hand, an energy storage system is provided, including: a support frame, a wind turbine, and multiple battery packs; The support frame is used to enclose multiple accommodating spaces, and the interior of the support frame has a ventilation network, as well as a main air inlet and multiple main air outlets connected to the ventilation network. The plurality of battery packs correspond to at least a portion of the plurality of receiving spaces, and each battery pack is installed in the corresponding receiving space; the battery pack includes: a heat-conducting plate, and a plurality of battery cells installed on the heat-conducting plate; The air supply unit is connected to the main air inlet, and the air supply unit is used to blow air into the ventilation network through the main air inlet; The plurality of main air outlets correspond to the plurality of battery packs, and each main air outlet faces the heat-conducting plate in the corresponding battery pack.

[0006] Optionally, the support frame includes: a plurality of support beams; each of the support beams extends along a first direction, the support beams are arranged in multiple columns along a second direction, and in multiple rows along a third direction; the first direction, the second direction, and the third direction are perpendicular to each other; The ventilation network includes: a first air duct distributed within the support beam; The support beam has a support side on the third-direction upward side, which is used to support the battery pack, and the support beam has a main air outlet on the other side of the third-direction upward side that is connected to the first air duct.

[0007] Optionally, the support frame further includes: a plurality of first main beams; each of the first main beams extends along the third direction, the first main beams are arranged in at least two rows along the first direction, and the two ends of the support beam are respectively connected to two first main beams that are adjacent to each other in the first direction; The ventilation network further includes: a second air duct distributed within the first main beam; The second air duct is connected to the end of the first air duct.

[0008] Optionally, the end of the support beam has a first opening communicating with the first air duct, and the side of the first main beam has a second opening communicating with the second air duct; the first opening and the second opening are connected.

[0009] Optionally, the support frame further includes: at least two second main beams; each of the second main beams extends along the second direction, and the at least two second main beams are arranged along the first direction; and the at least two second main beams correspond one-to-one with at least two rows of first main beams, and the ends of each first main beam in a row of first main beams are connected to the corresponding second main beam. The ventilation network also includes: a third air duct distributed within the second main beam; The third air duct is connected to the end of the second air duct, and the end of the second main beam has the main air inlet connected to the third air duct.

[0010] Optionally, the end of the first main beam near the second main beam has a third opening communicating with the second air duct, and the side of the second main beam has a fourth opening communicating with the third air duct; the third opening and the fourth opening are connected.

[0011] Optionally, the battery pack is located between two adjacent first main beams distributed in the second direction, and the edge portions of the battery pack on both sides in the second direction are respectively located on two adjacent support beams distributed in the second direction.

[0012] Optionally, the heat-conducting plate includes: a heat-conducting base plate, and two heat-conducting side plates fixedly connected to the heat-conducting base plate on both sides opposite to each other in a second direction; the surface of the heat-conducting base plate is perpendicular to the third direction, and the surface of the heat-conducting side plates is perpendicular to the surface of the heat-conducting base plate; The target support beam is used to support the edge portion of the heat-conducting base plate in the first battery pack, and the main air outlet of the target support beam faces the heat-conducting side plate in the second battery pack; the target support beam is any one of the plurality of support beams; the first battery pack is the battery pack supported by the target support beam among the plurality of battery packs; the second battery pack is the battery pack distributed adjacent to the first battery pack in the third direction among the plurality of battery packs, and in the third direction, the target support beam is located between the first battery pack and the second battery pack.

[0013] Optionally, the heat-conducting plate has multiple heat-conducting channels arranged in an array in a first direction, and any one of the heat-conducting channels is disposed inside the heat-conducting base plate and the two heat-conducting side plates; The heat conduction channel is filled with a heat conduction medium.

[0014] Optionally, the heat-conducting side plate has at least two heat-conducting gaps distributed in a first direction between any two adjacent heat-conducting channels.

[0015] Optionally, the support beam includes: a support beam body and an air outlet protrusion, wherein the support beam body is the support side on one side in the third direction, and the support beam body is connected to the air outlet protrusion on the other side in the third direction; The supporting beam body has the first air duct and a first opening communicating with the first air duct; the air outlet protrusion has the main air outlet on the side opposite to the supporting beam body.

[0016] Optionally, the support beam includes at least two air outlet protrusions, which are arranged in an array in the second direction; each air outlet protrusion has a main air outlet on the side opposite to the support beam body.

[0017] Optionally, each of the main air outlets of the air outlet protrusions has a plurality of sub-air outlets spaced apart in the first direction.

[0018] The beneficial effects of the technical solutions provided in this application include at least the following: During battery pack operation, the heat generated by the cells within the battery pack can be conducted to the heat-conducting plates. Air supply components blow air into the ventilation network of the support frame through the main air inlet, and this air is then directed through multiple main air outlets of the support frame to the corresponding heat-conducting plates of the battery pack, thus carrying away the heat and achieving heat dissipation for the battery pack. In this way, the energy storage system of this application, through the ventilation network within the support frame and the heat-conducting plates of the battery pack, can dissipate the heat generated by the cells within the battery pack. Compared to single air-cooling or liquid-cooling methods, the energy storage system of this application reduces the manufacturing cost while ensuring good heat dissipation for the battery pack. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an energy storage system provided in an embodiment of this application; Figure 2 This is a partial exploded view of an energy storage system provided in an embodiment of this application; Figure 3 This is a schematic diagram of a support frame provided in an embodiment of this application; Figure 4 This is a schematic diagram of a support beam provided in an embodiment of this application; Figure 5 This is a structural schematic diagram of a first main beam and a support beam provided in an embodiment of this application; Figure 6 This is a partial structural diagram of a support frame provided in an embodiment of this application; Figure 7 This is an exploded view of a battery pack provided in an embodiment of this application; Figure 8 This is a schematic diagram of another energy storage system provided in an embodiment of this application; Figure 9 This is a cross-sectional view of a heat-conducting plate on the YZ plane provided in an embodiment of this application; Figure 10 This is a cross-sectional view of a heat-conducting plate in the XY plane provided in an embodiment of this application; Figure 11 This is a schematic diagram of another energy storage system improved in the embodiments of this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0022] This application provides an energy storage system. Please refer to the following embodiments. Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an energy storage system provided in an embodiment of this application. Figure 2 This is a partial exploded view of an energy storage system provided in an embodiment of this application. The energy storage system may include a support frame 100, a wind turbine unit 200, and multiple battery packs 300.

[0023] The support frame 100 in the energy storage system can be used to enclose multiple housing spaces K, and the interior of the support frame K can have a ventilation network, as well as a main air inlet O1 and multiple main air outlets V1 connected to the ventilation network.

[0024] Multiple battery packs 300 in the energy storage system can correspond to at least a portion of the multiple receiving spaces K of the support frame 100. Each battery pack 300 can be installed within its corresponding receiving space K to achieve installation of the battery pack 300 within the receiving space K. The battery pack 300 may include a heat-conducting plate 302 and multiple battery cells 301 mounted on the heat-conducting plate 302. Here, the multiple battery cells 301 in the multiple battery packs 300 can be connected in series and / or in parallel to form a battery pack 300 with greater electrical capacity.

[0025] It should be noted that the number of multiple accommodating spaces K in the support frame 100 can be the same as the number of multiple battery packs 300, with each accommodating space K of the support frame 100 containing a battery pack 300. Alternatively, the number of multiple accommodating spaces K in the support frame 100 can be greater than the number of multiple battery packs 300. The accommodating spaces K in the support frame 300 that do not contain battery packs 300 can be used to house components such as high-voltage boxes.

[0026] The air supply unit 200 in the energy storage system can be connected to the main air inlet O1 of the support frame 100, and the air supply unit 200 can be used to blow air into the ventilation network of the support frame 100 through the main air inlet O1. Here, the air blown into the ventilation network of the support frame 100 can be blown out through the multiple main air outlets V1 of the support frame 100.

[0027] In this application, the multiple main air outlets V1 of the support frame 100 can correspond to multiple battery packs 300 located within multiple accommodating spaces K of the support frame 100, and each main air outlet V1 can face the heat-conducting plate 302 in the corresponding battery pack 300. Thus, during the operation of the battery pack 300, the heat generated by the battery cells 301 in the battery pack 300 can be conducted to the heat-conducting plate 302. The air supplied by the air supply assembly 200, blown into the ventilation network of the support frame 100 through the main air inlet O1, can be blown through the multiple main air outlets V1 of the support frame 100 towards the heat-conducting plate 302 of the corresponding battery pack 300 to remove heat from the corresponding heat-conducting plate 302, thereby achieving heat dissipation of the battery pack 300. Thus, the energy storage system in this application can dissipate the heat generated by the cells 301 in the battery pack 300 through the ventilation network in the support frame 100 and the heat conduction plate 302 of the battery pack 300. Compared with single air cooling or liquid cooling, the energy storage system in this application reduces the cost of heat dissipation while ensuring good heat dissipation effect on the battery pack 300.

[0028] In summary, this application provides an energy storage system including a support frame, a fan unit, and multiple battery packs. During the operation of the battery packs, the heat generated by the cells within the battery packs can be conducted to heat-conducting plates. The fan unit blows air into the ventilation network of the support frame through the main air inlet, and the air can then be directed through multiple main air outlets of the support frame to the corresponding heat-conducting plates of the battery packs, thereby carrying away the heat from the corresponding heat-conducting plates and achieving heat dissipation for the battery packs. Thus, the energy storage system of this application, through the ventilation network within the support frame and the heat-conducting plates of the battery packs, can dissipate the heat generated by the cells within the battery packs. Compared to single air cooling or liquid cooling, the energy storage system of this application reduces the manufacturing cost of the energy storage system while ensuring good heat dissipation for the battery packs.

[0029] It should be noted that in energy storage systems with air-cooled heat dissipation systems in related technologies, each battery pack is equipped with a fan, and each battery pack has ventilation vents that communicate with the interior of the battery pack. The fans blow air into the battery pack through these vents to dissipate heat. However, these ventilation vents affect the battery pack's IP protection rating, reducing its dust and foreign object intrusion resistance, as well as its moisture and water resistance. Furthermore, the fans have a short lifespan and are prone to damage, resulting in higher daily maintenance costs for the energy storage system.

[0030] In this application, the battery cells 301 of the battery pack 300 are mounted on a heat-conducting plate 302. The heat generated by the battery cells 301 can be directly conducted to the heat-conducting plate 302, and the heat accumulated on the heat-conducting plate 302 can be directly carried away by the air blown out through the main air outlet V1 of the support frame 100. Therefore, compared with energy storage systems with air-cooled heat dissipation systems in related technologies, the battery pack 300 in this application does not need to be equipped with ventilation vents, ensuring a higher IP protection level for the battery pack 300, which is beneficial to the thermal runaway and overcharge test pass rate of the energy storage system. Furthermore, this application directly blows air from the air supply unit 200 into the ventilation network of the support frame 100, and the air blown into the ventilation network can be blown to multiple battery packs 300 through multiple main air outlets O1. Therefore, compared with energy storage systems with air-cooled heat dissipation systems in related technologies, this application does not need to install a fan on each battery pack, reducing production costs and operation and maintenance costs.

[0031] It should also be noted that in energy storage systems equipped with air-cooled heat dissipation systems in related technologies, the air-cooled heat dissipation system can only dissipate heat from the battery pack. To regulate the humidity of the energy storage system, a dehumidifying air conditioner also needs to be installed.

[0032] In this application, the air supply unit 200 in the energy storage system can be an air conditioning unit. The air conditioning unit can supply high-pressure air to the ventilation network of the support frame 100 through the main air inlet O1 of the support frame 100. Here, the air conditioning unit has multiple functional modes. By changing different functional modes of the air conditioning unit, the temperature of the air blown into the ventilation network of the support frame 100 can be adjusted to achieve cooling, heating, ventilation, dehumidification, or insulation of the battery pack 300. For example, by adjusting the air supply unit 200, not only can heat dissipation be achieved for the battery pack 300 in the energy storage system, but the internal temperature of the energy storage system can also be maintained, ensuring a consistent internal temperature. Thus, compared to energy storage systems in related technologies that are equipped with air-cooled heat dissipation systems, the energy storage system of this application eliminates the cost of additional dehumidification air conditioning, further saving production costs.

[0033] In this application, a turbine with a boosting effect can be installed between the air supply unit 200 and the main air inlet O1 of the support frame 100 to increase the airflow rate of the air supply unit 200 into the ventilation network of the support frame 100, thereby improving the heat dissipation or heating effect on the battery pack 300.

[0034] Optional, please refer to Figure 3 , Figure 3 This is a structural schematic diagram of a support frame provided in an embodiment of this application. Figure 4 , Figure 4This is a schematic diagram of a support beam structure provided in an embodiment of this application. The support frame 100 may include multiple support beams 101. Each support beam 101 in the support frame 100 may extend along a first direction X. The support beams 101 may be arranged in multiple columns along a second direction Y, and may be arranged in multiple rows along a third direction Z. Here, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0035] The ventilation network of the support frame 100 may include a first air duct distributed within the support beam 101. Here, one side of the support beam 101 in the third direction Z is a support side P, which can be used to support the battery pack 300, and the other side of the support beam 101 in the third direction Z has a main air outlet V1 communicating with the first air duct. In this way, the battery pack 300 can be installed in the corresponding receiving space K of the support frame 100 by the support of the support beam 101. The air supplied by the air supply unit 200 is blown into the ventilation network through the main air inlet O1, and after passing through the first air duct of the support beam 101, it is blown towards the heat conduction plate 302 of the battery pack 300 through the main air outlet V1 of the support beam 101.

[0036] Optional, such as Figure 3 and Figure 5 As shown, Figure 5 This is a schematic diagram of a first main beam and a support beam provided in an embodiment of this application. The support frame 100 may further include a plurality of first main beams 102. Each first main beam 102 in the support frame 100 may extend along a third direction Z, and the first main beams 102 may be arranged in at least two rows along a first direction X. The two ends of the support beam 101 in the support frame 100 may be respectively connected to at least two first main beams 102 that are adjacent to each other in the first direction X.

[0037] The ventilation network of the support frame 101 may further include a second air duct distributed within the first main beam 102. Here, the second air duct of the first main beam 102 may be connected to the first air duct of the support beam 101. In this way, the air blown into the ventilation network by the air supply unit 200 through the main air inlet O1 can be blown into the first air duct of the support beam 101 after passing through the second air duct of the first main beam 102, and then blown towards the heat conduction plate 302 of the battery pack 300 through the main air outlet V1 of the support beam 101.

[0038] Optionally, the end of the support beam 101 in the support frame 100 may have a first opening U1 communicating with a first air duct of the support beam 101. The side of the first main beam 102 in the support frame 100 may have a second opening U2 communicating with a second air duct of the first main beam 102. Here, the first opening U1 of the support beam 101 may be coplanar with the second opening U2 of the first main beam 102, and air entering the first main beam 102 may be blown into the first air duct of the support beam 101 through the connected second opening U2 and the first opening U1.

[0039] It should be noted that the first opening U1 of the support beam 101 can be located on the side of the support beam 101 in the second direction Y, and the first opening U1 of the support beam 101 can be located on the side of the support beam 101 facing away from the corresponding receiving space K1. The second opening U2 of the first main beam 102 can be located on the side of the first main beam 102 in the second direction Y. Here, after the side of the support beam 101 with the first opening U1 is connected to the side of the first main beam 102 with the second opening U2, the first opening U1 and the first opening U2 are connected.

[0040] Here, the side of the support beam 101 with the first opening U1 can be welded to the side of the first main beam 102 with the second opening U2, and the connection between the first opening U1 and the second opening U2 can be sealed with sealant to prevent air entering the ventilation network from leaking to the outside through the connection between the first opening U1 and the second opening U2.

[0041] The support beam 101 has a first opening U1 at both ends in the first direction X. The two first openings U1 at both ends of the support beam 101 can communicate with the two second openings U2 of the two first main beams 102 connected to the two ends of the support beam 101, respectively. In this way, the air entering the second air ducts of the two first main beams 102 can enter the first air duct of the support beam 101 through the second openings U2, thereby increasing the airflow speed within the ventilation network.

[0042] It should also be noted that this embodiment of the application illustrates the example of two rows of first main beams 102 arranged along the first direction X. In this way, multiple support beams 102 in the support frame 100 can be located between the two rows of first main beams 102 in the first direction X. Here, for the multiple first main beams 102 arranged in two rows, the multiple first main beams 102 can be arranged into multiple groups of first main beams in the second direction Y, with each group of first main beams including two first main beams 102 arranged along the first direction X.

[0043] The first main beam 102 may have multiple second openings U2 arranged along the third direction Z, and each second opening U2 may be connected to a first opening UI of a support beam 101. Thus, for each group of first main beams, multiple support beams 101 may be connected between two first main beams in each group, and the multiple support beams 101 may be arranged in an array along the third direction Z. The multiple support beams 101 connected to a group of first main beams may be referred to as a row of support beams. Furthermore, in the multiple groups of first main beams arranged along the second direction Y, each group of first main beams may be connected to a row of support beams, so that the multiple support beams 101 in the support frame 100 may be arranged in multiple rows along the second direction Y.

[0044] In this way, in the ventilation network of the support frame 100, the air entering the first main beam 102 can be blown to multiple second openings U2 at the same time, and then blown into the first air duct of the corresponding multiple support beams 101 through the connected second openings U2 and the first openings U1, so as to be blown to the heat conduction plates 302 of the corresponding multiple battery packs 300 through the multiple main air outlets V1 of the multiple support beams 101.

[0045] Optional, such as Figure 3 and Figure 6 As shown, Figure 6 This is a partial structural schematic diagram of a support frame provided in an embodiment of this application. The support frame 100 may further include at least two second main beams 103. Each of the second main beams 103 of the support frame 100 may extend along a second direction Y, and at least two second main beams 103 may be arranged along a first direction X. At least two second main beams 103 in the support frame 100 may correspond one-to-one with at least two rows of first main beams 102, and the ends of each first main beam 102 in a row of first main beams 102 may be connected to a second main beam 103.

[0046] The ventilation network in the support frame may further include a third air duct distributed within the second main beam 103. The third air duct of the second main beam 103 may be connected to the end of the second air duct of the first main beam 102, and the end of the second main beam 103 has a main air inlet O1 connected to the third air duct. Thus, the air supply unit 200 can blow air into the third air duct of the second main beam 103 through the main air inlet O1. The air entering the third air duct can be blown into the second air duct of the first main beam 102, which is connected to the third air duct. Furthermore, the air entering the second air duct can be blown into the first air duct of the support beam 101 through the connected second opening U2 and first opening U1. The air entering the first air duct is then blown towards the heat-conducting plate 302 of the corresponding battery pack 300 through the main air outlet V1 of the support beam 101.

[0047] Optional, such as Figure 5 and Figure 6As shown, the end of the first main beam 102 near the second main beam 103 may have a third opening U3 communicating with the second air duct of the first main beam 102, and the side of the second main beam 103 may have a fourth opening U4 communicating with the third air duct of the second main beam 103. The third opening U3 of the first main beam 102 can be connected to the fourth opening U4 of the second main beam 103. In this way, the air entering the third air duct of the second main beam 103 can be blown into the second air duct of the first main beam 102 through the connected third opening U3 and fourth opening U4.

[0048] It should be noted that the side of the first main beam 102 facing the second main beam 103 in the third direction Z may have a third opening U3. The side of the second main beam 103 facing the first main beam 102 in the third direction Z may have a fourth opening U4. Here, after the side of the first main beam 102 with the third opening U3 is connected to the side of the second main beam 103 with the fourth opening U4, the third opening U3 can communicate with the fourth opening U4.

[0049] Here, the side of the first main beam 102 with the third opening U3 can be welded to the side of the second main beam 103 with the fourth opening U4, and the connection between the third opening U3 and the fourth opening U4 can be sealed with sealant to prevent air entering the ventilation network from leaking to the outside through the connection between the third opening U3 and the fourth opening U4.

[0050] It should also be noted that the second main beam 103 may have multiple fourth openings U4, which may be arranged along the second direction Y, and the main air inlet O1 of the second main beam 103 may be located at one end of the second main beam 103 in the second direction Y. Each fourth opening U4 of the second main beam 103 may be connected to the third opening U3 of the first main beam.

[0051] Thus, for a single second main beam 103, multiple first main beams 102 connected to the multiple fourth openings U4 of the second main beam 103 can be arranged in a row along the second direction Y. For at least two second main beams 103 arranged in the first direction X, multiple first main beams 102 connected to the multiple fourth openings U4 of the at least two second main beams 103 can be arranged in at least two rows along the first direction X. This application embodiment uses a support frame 100 including two second main beams 103 as an example for illustrative purposes.

[0052] In this application, as Figure 6As shown, the second main beam 103 may include a second main beam body 1031 and a circular pipe 1032. The second main beam body 1031 has a first sub-air duct, and the circular pipe 1032 has a second sub-air duct. The first and second sub-air ducts are connected and form a third air duct of the second main beam 103. The second main beam body 1031 can extend along a second direction Y, and the circular pipe 1032 can extend along a third direction Z. The circular pipe 1032 can be located at one end of the second main beam body 1031 in the second direction Y. The second main beam body 1031 has multiple fourth openings U4 arranged along the second direction Y, and the end of the circular pipe 1032 facing away from the second main beam body 1031 in the third direction Z can have a main air inlet O1. It should be noted that a flange can be provided at the end of the circular pipe 1032 facing away from the second main beam body 1031, through which air conditioners of different specifications can be connected.

[0053] In this application, the support frame 100 consists of a support beam 101, a first main beam 102, and a second main beam 103. The support beam 101 has a first air duct, the first main beam 102 has a second air duct, and the second main beam 103 has a third air duct. Therefore, the support beam 101, the first main beam 102, and the second main beam 103 in the support frame 100 are all vacuum pipes, which makes the support frame 100 lighter, reduces material and transportation costs, and further reduces the manufacturing cost of the energy storage system.

[0054] Optional, such as Figure 2 and Figure 3 As shown, the battery pack 300 can be located between two adjacent first main beams 102 distributed in the second direction Y, and the edge portions of the battery pack 300 on both sides in the second direction Y can be located on two adjacent support beams 101 distributed in the second direction Y, respectively. That is, for one accommodating space of the support frame 101, the number of support beams 101 used to support the battery pack 300 located in the accommodating space K can be two. The extending direction of the two support beams 101 is parallel to the first direction X, and the two support beams 101 are arranged in the second direction Y. Here, the length of the two support beams 101 in the first direction X can be greater than or equal to the length of the battery pack 300 in the first direction X, so as to ensure the stability of the support of the battery pack 300 by the two support beams 101.

[0055] Optional, such as Figure 7 As shown, Figure 7This is an exploded view of a battery pack provided in an embodiment of this application. The heat-conducting plate 302 may include: a heat-conducting base plate 3021, and two heat-conducting side plates 3022 fixedly connected to the heat-conducting base plate 3021 on both sides opposite to it in the second direction Y. The surface of the heat-conducting base plate 3021 in the heat-conducting plate 302 may be perpendicular to the third direction Z, and the surface of the heat-conducting side plates 3022 may be perpendicular to the surface of the heat-conducting base plate 3021.

[0056] In this application, as Figure 7 and Figure 8 As shown, Figure 8 This is a schematic diagram of another energy storage system provided in this application embodiment. The target support beam 101a can be used to support the edge portion of the heat-conducting base plate 3021 in the first battery pack 310, and the main air outlet V1 of the target support beam 101a can face the heat-conducting side plate 3022 in the second battery pack 320. The target support beam 101a can be any one of a plurality of support beams 101. The first battery pack 310 can be a battery pack among a plurality of battery packs 300 that is supported by the target support beam 101a. The second battery pack 320 can be a battery pack among a plurality of battery packs 300 that is adjacent to the first battery pack 310 in the third direction Z, and in the third direction Z, the target support beam 101a can be located between the first battery pack 310 and the second battery pack 320. In this way, the support beams 101 in the support frame 100 can have both ventilation and support functions. By using the support beams 101 to support the battery packs 300, the volume of the support frame 100 can be reduced, thereby reducing the overall volume of the energy storage system.

[0057] Here, all the battery cells 301 in the battery pack 300 can contact the heat-conducting base plate 3021 in the heat-conducting plate 302. During the operation of the battery pack 300, the heat generated by the battery cells 301 can be conducted to the heat-conducting side plate 3022 through the heat-conducting base plate 3021. Furthermore, the main air outlet V1 of the support beam 101 faces the heat-conducting side plate 3022, so the air blown from the main air outlet V1 can be directed to the heat-conducting side plate 3022 to remove the heat concentrated on the grid of the heat-conducting side plate 3022.

[0058] In this application, as Figure 4 As shown, the support beam 101 may include a support beam body 1011 and an air outlet protrusion 1012. One side of the support beam 1011 in the third direction Z can be a support side P, and the other side of the support beam body 1011 in the third direction Z can be connected to the air outlet protrusion 1012. Here, the support beam body 1011 may have a first air duct and a first opening U1 communicating with the first air duct. The side of the air outlet protrusion 1012 facing away from the support beam body 1011 may have a main air outlet V1. Thus, air blown into the first air duct from the first opening U1 can be blown towards the battery pack through the main air outlet V1 of the air outlet protrusion 1012.

[0059] Optional, such as Figure 4 As shown, the support beam 101 may include at least two air outlet protrusions 1012, which may be arranged in an array in the second direction Y. Each air outlet protrusion 1012 of the support beam 101 may have a main air outlet V1 on the side opposite to the support beam body 1011. In this way, by providing at least two air outlet protrusions 1012, the air outlet area of ​​the support beam 101 can be increased, thereby improving the heat dissipation effect on the heat conduction plate 302.

[0060] Optional, such as Figure 4 As shown, each air outlet protrusion 1012 of the support beam 101 can have a plurality of sub-air outlets V11 spaced apart in the first direction X. In this way, each main air outlet V1 is composed of a plurality of sub-air outlets V11 spaced apart, which can improve the uniformity of the air blown from the main air outlet V1.

[0061] The main air outlet V1 of the support beam 101 may include at least two sub-air outlets V11 arranged along the second direction Y, and at least three sub-air outlets V11 are spaced apart. In this way, by setting sub-air outlets V11, the air outlet area of ​​the main air outlet V1 can be increased, thereby improving the heat dissipation effect on the heat-conducting plate 302.

[0062] Optional, such as Figure 9 and Figure 10 As shown, Figure 9 This is a cross-sectional view of a heat-conducting plate in the YZ plane provided in an embodiment of this application. Figure 10 This is a cross-sectional view of a heat-conducting plate in the XY plane according to an embodiment of this application. The heat-conducting plate 302 may have multiple heat-conducting channels A arranged in an array in the first direction X. Each heat-conducting channel A is disposed inside the heat-conducting base plate 3021 and the two heat-conducting side plates 3022. Here, the extension direction of the portion of the heat-conducting channel A disposed inside the heat-conducting base plate 3021 may be parallel to the second direction Y, and the extension direction of the portion of the heat-conducting channel A disposed in the heat-conducting side plates 3022 may be parallel to the third direction Z. In this way, the extension direction of the heat-conducting channel A can be perpendicular to the extension direction of the support beam 101, i.e., the first direction X, thereby providing structural strength for the support frame 100 on which the battery pack 300 is mounted.

[0063] Here, the heat conduction channel A of the heat conduction plate 302 is filled with a heat-conducting medium. It should be noted that the heat conduction channel A of the heat conduction plate 302 can be a vacuum channel, and the heat-conducting medium filled within it can be copper and acetaldehyde liquid. Specifically, nano-copper powder can be vacuum-sintered within the heat conduction channel A of the heat conduction plate 302, and a small amount of acetaldehyde liquid can be added. Copper has good thermal conductivity, and acetaldehyde liquid has a low boiling point. For example, acetaldehyde liquid boils at around 20°C under normal pressure. Therefore, the acetaldehyde liquid located within the vacuum channel has an even lower boiling point. Thus, under the combined action of copper and acetaldehyde, the heat conduction plate 302 can have high heat transfer efficiency, resulting in good heat conduction performance.

[0064] Optional, such as Figure 9 and Figure 10 As shown, the heat-conducting side plate 3022 in the heat-conducting plate 302 may have at least two heat-conducting gaps B distributed in the first direction X between any two adjacent heat-conducting channels A. In this way, the air blown into the heat-conducting side plate 3022 through the main air outlet V1 can be blown into the heat-conducting gaps B, thereby increasing the contact area between the air blown into the heat-conducting side plate 3022 and the heat-conducting side plate 3022, and thus improving the heat dissipation effect of the heat-conducting side plate 3022.

[0065] Here, the heat-conducting side plate 3022 may include a first plate 30222a and a second plate 3022b spaced apart in the first direction X. A heat-conducting channel A may be provided in the first plate 3022a. The second plate 3022b has heat-conducting gaps B on both sides in the first direction X and between each of the two adjacent first plates 3022a.

[0066] It should be noted that each of the multiple heat conduction channels A arranged in the first direction X can include two spaced-apart sub-channels, each filled with a heat-conducting medium. In this way, by setting up dual-cavity channels, the heat conduction effect of the heat conduction plate 302 can be improved while reducing its weight, resulting in a lower weight of the battery pack 300 supported by the support beam 101, and consequently, higher structural strength of the support frame 100 on which multiple battery packs 300 are mounted.

[0067] In energy storage systems equipped with liquid cooling systems in related technologies, the liquid cooling system needs to include: a liquid cooler unit and liquid cooling pipes, with the pipes filled with coolant. One end of the liquid cooling pipe contacts the battery pack, and the other end contacts the liquid cooler unit to conduct heat generated by the battery pack to the liquid cooler unit for dissipation. Here, the liquid cooler unit may include a heat exchange plate, a liquid storage tank, and a water pump.

[0068] In this application, the heat conduction channel A of the heat conduction plate 302 that contacts the battery cell 301 in the battery pack 300 is a sealed vacuum channel, and the heat conduction channel A is filled with a heat-conducting medium. The heat generated by the battery cell 301 is conducted to the heat conduction plate 302 and then directly carried away by the air blown out from the main air outlet V1, thereby achieving heat dissipation of the battery pack 300.

[0069] Therefore, compared to energy storage systems with liquid cooling systems in related technologies, this application eliminates the need for liquid cooling units and liquid cooling pipes, as well as the coolant filled in the liquid cooling pipes, thereby saving on the design, processing, transportation, and installation costs of the liquid cooling pipes, and further reducing the heat dissipation cost of the energy storage system in this application. Furthermore, this application dissipates heat through the air blown out by the air supply component 200. Compared to the liquid cooling units in liquid cooling systems of related technologies, the air supply component 200 has a lower cost. For example, the air supply component 200 can be an air conditioning unit, thus further reducing the heat dissipation cost of the energy storage system in this application.

[0070] Furthermore, the coolant in liquid cooling systems of related technologies is expensive, while the heat conduction channel A in this application is sealed with a heat-conducting medium, eliminating the need for coolant filling and saving coolant costs. Moreover, subsequent maintenance of the battery pack eliminates the need for draining and refilling, further reducing replenishment costs and significantly decreasing the workload of battery pack disassembly and assembly, thus lowering the overall operation and maintenance costs. This further reduces the heat dissipation cost of the energy storage system in this application. Additionally, the coolant in liquid cooling systems of related technologies is prone to environmental pollution. This application, by filling the heat conduction channel A with a heat-conducting medium, eliminates the risk of coolant leakage, reducing the environmental pollution caused by the energy storage system.

[0071] Furthermore, the heat generated by the battery cell 301 in this application is conducted to the heat-conducting plate 302 and then directly carried away by the air blown out from the main air outlet V1, thereby achieving heat dissipation for the battery pack 300. Compared with the air-cooled heat dissipation system in related technologies, there is no need to set up air ducts between adjacent battery packs, reducing the distance between adjacent battery packs, improving the sealing of the battery pack arrangement, and thus increasing the energy density of the battery pack.

[0072] In this application, as Figure 8As shown, the support frame 100 may further include at least two bottom beams 104. Each bottom beam 104 in the support frame 100 may extend along a second direction Y, and at least two bottom beams 104 may be arranged along a first direction X. Furthermore, at least two bottom beams 104 in the support frame 100 may correspond one-to-one with at least two second main beams 103 in the support frame 100. One end of a row of first main beams 102 corresponding to a second main beam 103, having a third opening U3, may be connected to the corresponding second main beam 103, and the end of the first main beam 102 facing away from the third opening U3 may be connected to the corresponding bottom beam 104. In this way, at least two bottom beams 104 can support the entire support frame 100.

[0073] It should be noted that the connection between the first main beam 102 and the bottom beam 104 has no opening to ensure the connection strength between them. Furthermore, the bottom beam 104 does not have internal air ducts to ensure its strength. Thus, by using the bottom beam 104 to support the support frame 100, the overall structural strength of the support frame 100 can be guaranteed.

[0074] In this application, as Figure 11 As shown, Figure 11 This is a schematic diagram of another energy storage system improved according to an embodiment of this application. In the above embodiment, a support frame 100, multiple battery packs 300 installed within the support frame 100, and a fan unit 200 connected to the main air inlet of the support frame 100 can constitute a small energy storage system 000. When a larger power demand needs to be met, multiple small energy storage systems 000 can be connected to form a larger energy storage system to increase power output. For example, multiple small energy storage systems can be arranged in an array along a first direction X.

[0075] In summary, this application provides an energy storage system including a support frame, a fan unit, and multiple battery packs. During the operation of the battery packs, the heat generated by the cells within the battery packs can be conducted to heat-conducting plates. The fan unit blows air into the ventilation network of the support frame through the main air inlet, and the air can then be directed through multiple main air outlets of the support frame to the corresponding heat-conducting plates of the battery packs, thereby carrying away the heat from the corresponding heat-conducting plates and achieving heat dissipation for the battery packs. Thus, the energy storage system of this application, through the ventilation network within the support frame and the heat-conducting plates of the battery packs, can dissipate the heat generated by the cells within the battery packs. Compared to single air cooling or liquid cooling, the energy storage system of this application reduces the manufacturing cost of the energy storage system while ensuring good heat dissipation for the battery packs.

[0076] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0077] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An energy storage system, characterized in that, include: Support frame (100), wind supply unit (200) and multiple battery packs (300); The support frame (100) is used to enclose multiple accommodating spaces (K), and the interior of the support frame (100) has a ventilation network, as well as a main air inlet (O1) and multiple main air outlets (V1) connected to the ventilation network. The plurality of battery packs (300) correspond to at least a portion of the plurality of receiving spaces (K), and each battery pack (300) is installed in the corresponding receiving space (K); the battery pack (300) includes: a heat-conducting plate (302), and a plurality of battery cells (301) installed on the heat-conducting plate (302). The air supply unit (200) is connected to the main air inlet (O1), and the air supply unit (200) is used to blow air into the ventilation network through the main air inlet (O1); The plurality of main air outlets (V1) correspond to the plurality of battery packs (300), and each main air outlet (V1) faces the heat-conducting plate (302) in the corresponding battery pack (300).

2. The energy storage system according to claim 1, characterized in that, The support frame (100) includes: a plurality of support beams (101); each of the support beams (101) extends along a first direction (X), the support beams (101) are arranged in multiple columns along a second direction (Y), and in multiple rows along a third direction (Z); the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other; The ventilation network includes: a first air duct distributed within the support beam (101); The support beam (101) has a support side (P) on one side of the third direction (Z), which is used to support the battery pack (300), and the support beam (101) has a main air outlet (V1) on the other side of the third direction (Z) that is connected to the first air duct.

3. The energy storage system according to claim 2, characterized in that, The support frame (100) further includes: a plurality of first main beams (102); each of the first main beams (102) extends along the third direction (Z), the first main beams (102) are arranged in at least two rows along the first direction (X), and the two ends of the support beam (101) are respectively connected to two first main beams (102) that are adjacent to each other in the first direction (X); The ventilation network further includes: a second air duct distributed within the first main beam (102); The second air duct is connected to the end of the first air duct.

4. The energy storage system according to claim 3, characterized in that, The end of the support beam (101) has a first opening (U1) that communicates with the first air duct, and the side of the first main beam (102) has a second opening (U2) that communicates with the second air duct; the first opening (U1) and the second opening (U2) are connected.

5. The energy storage system according to claim 3, characterized in that, The support frame (100) further includes: at least two second main beams (103); each of the second main beams (103) extends along the second direction (Y), and at least two second main beams (103) are arranged along the first direction (X); and at least two second main beams (103) correspond one-to-one with at least two rows of first main beams (102), and the ends of each first main beam (102) in a row of first main beams (102) are connected to the corresponding second main beam (103); The ventilation network also includes a third air duct distributed within the second main beam (103); The third air duct is connected to the end of the second air duct, and the end of the second main beam (103) has the main air inlet (O1) connected to the third air duct.

6. The energy storage system according to claim 5, characterized in that, The first main beam (102) has a third opening (U3) at the end near the second main beam (103) that communicates with the second air duct, and the side of the second main beam (103) has a fourth opening (U4) that communicates with the third air duct; the third opening (U3) and the fourth opening (U4) are connected.

7. The energy storage system according to any one of claims 3-6, characterized in that, The battery pack (300) is located between two adjacent first main beams (102) in the second direction (Y), and the edge portions of the battery pack (300) on both sides in the second direction (Y) are respectively located on two adjacent support beams (101) in the second direction (Y).

8. The energy storage system according to claim 7, characterized in that, The heat-conducting plate (302) includes: a heat-conducting base plate (3021), and two heat-conducting side plates (3022) fixedly connected to the heat-conducting base plate (3021) on both sides opposite to each other in the second direction (Y); the surface of the heat-conducting base plate (3021) is perpendicular to the third direction (Z), and the surface of the heat-conducting side plates (3022) is perpendicular to the surface of the heat-conducting base plate (3021); The target support beam (101a) is used to support the edge portion of the heat-conducting base plate (3021) in the first battery pack (310), and the main air outlet (V1) of the target support beam (101a) faces the heat-conducting side plate (3022) in the second battery pack (320); the target support beam (101a) is any one of the plurality of support beams (101); the first battery pack (310) is the battery pack (300) supported by the target support beam (101a) among the plurality of battery packs (300); the second battery pack (320) is the battery pack (300) distributed adjacent to the first battery pack (310) in the third direction (Z) among the plurality of battery packs (300), and the target support beam (101a) is located between the first battery pack (310) and the second battery pack (320) in the third direction (Z).

9. The energy storage system according to claim 8, characterized in that, The heat-conducting plate (302) has multiple heat-conducting channels (A) arranged in an array in a first direction (X) inside, and any one of the heat-conducting channels (A) is disposed inside the heat-conducting base plate (3021) and the two heat-conducting side plates (3022); The heat conduction channel (A) is filled with a heat conduction medium.

10. The energy storage system according to claim 9, characterized in that, The heat-conducting side plate (3022) has at least two heat-conducting gaps (B) distributed in a first direction (X) between any two adjacent heat-conducting channels (A).

11. The energy storage system according to any one of claims 2-6 and 8-10, characterized in that, The support beam (101) includes: a support beam body (1011) and an air outlet protrusion (1012). The support beam body (1011) is located on one side of the third direction (Z) as the support side (P), and the support beam body (1011) is connected to the air outlet protrusion (1012) on the other side of the third direction (Z). The supporting beam body (1011) has the first air duct and a first opening (U1) communicating with the first air duct; the air outlet protrusion (1012) has the main air outlet (V1) on the side opposite to the supporting beam body (1011).

12. The energy storage system according to claim 11, characterized in that, The support beam (101) includes at least two air outlet protrusions (1012), which are arranged in an array in the second direction (Y); each air outlet protrusion (1012) has a main air outlet (V1) on the side opposite to the support beam body (1011).

13. The energy storage system according to claim 12, characterized in that, Each of the air outlet protrusions (1012) has a main air outlet (V1) having a plurality of sub-air outlets (V11) spaced apart in the first direction (X).

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