Energy storage container

Abstract

This utility model discloses an energy storage container, including a container body, a housing compartment and a first partition. The first partition is installed in the housing compartment and divides the housing compartment into a first compartment and a second compartment, which are distributed along the height of the container body. The first compartment contains multiple energy storage converters; the second compartment contains multiple battery packs, each battery pack corresponding to one of the multiple energy storage converters, and each battery pack is electrically connected to its corresponding energy storage converter. A busbar assembly is located in the first compartment and electrically connected to the multiple energy storage converters. In this energy storage container, each battery pack is electrically connected to one set of energy storage converters within the container body, reducing circulating currents between battery packs caused by centralized output. Furthermore, each energy storage converter outputs current via a busbar assembly, reducing the use of cables.

Description

Technical Field

[0001] This utility model relates to the field of energy storage containers. Background Technology

[0002] Energy storage containers, also known as battery containers, typically place the energy storage converter at the bottom or side of the battery compartment. It is directly electrically connected to the battery pack in the battery compartment, without a separate compartment for the energy storage converter. In this case, the battery pack and the energy storage converter are not independent of each other, which can easily lead to overheating in the battery compartment. In addition, the internal space of the battery compartment is small. If the battery pack and the energy storage converter are placed together, maintenance will also be inconvenient.

[0003] Furthermore, the battery container outputs DC power, and each cluster of battery packs in the battery compartment is connected to the same energy storage converter through cables. This connection method has problems such as inter-cluster circulating current and failure of a single cluster of battery packs, which can easily lead to the failure of the entire system. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, the present invention provides an energy storage container in which each battery pack is electrically connected to a set of energy storage converters inside the container, reducing the circulating current between battery packs caused by centralized output, and each energy storage converter outputs current through a busbar assembly, reducing the use of cables.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] An energy storage container, comprising,

[0007] The container has a housing compartment and a first partition. The first partition is installed in the housing compartment and divides the housing compartment into a first compartment and a second compartment. The first compartment and the second compartment are distributed in the height direction of the container.

[0008] The first compartment is equipped with multiple energy storage converters;

[0009] The second compartment is equipped with multiple battery packs, and each battery pack is correspondingly set with one of the multiple energy storage converters. Each battery pack is electrically connected to each of the energy storage converters.

[0010] A conductive busbar assembly is located in the first compartment and is electrically connected to multiple energy storage converters.

[0011] Furthermore, the housing is provided with multiple partitions, which are spaced apart in a first direction and separate the first compartment and the second compartment in the first direction; a first partition is provided between two adjacent partitions; a first connector is provided on the conductive busbar assembly, and a second connector is provided on the partition, wherein the first connector and the second connector are detachably connected.

[0012] Furthermore, the partition includes multiple partition beams, which are spaced apart in the first direction; the partition beams of the same partition are connected by support beams; and the second connecting member is disposed on the support beam.

[0013] Furthermore, the first connector includes a first connecting segment and two second connecting segments, the two second connecting segments being bent and connected to both sides of the first connecting segment, the first connecting segment being connected to the busbar assembly, and the second connecting segments being connected to the second connector.

[0014] Furthermore, the second connecting section is provided with a connecting hole, and the second connecting member is a connecting bolt, which is threadedly engaged with the connecting hole.

[0015] Furthermore, the conductive bus assembly is provided with a plurality of the first connectors spaced apart in the first direction.

[0016] Furthermore, the enclosure is provided with a second partition, which is spaced apart from the plurality of partitions in the first direction; the second partition and the side panel of the enclosure are spaced apart to form a third compartment; the third compartment is provided with a control system; the end of the conductive busbar assembly is connected to the control system via a cable.

[0017] Furthermore, the third compartment is provided with a third partition, which divides the third compartment into two separate spaces; one of the separate spaces is equipped with the control system; the other separate space is equipped with a cooling system.

[0018] Both the first compartment and the second compartment contain cooling pipe assemblies, which are connected to the cooling system.

[0019] Furthermore, the busbar assembly includes a first busbar, a second busbar, and a third busbar, which are spaced apart; the first busbar, the second busbar, and the third busbar are all electrically connected to the energy storage converter; and the first connector is provided on the first busbar, the second busbar, and the third busbar.

[0020] Furthermore, the first compartment is located above the second compartment.

[0021] In summary, this utility model has the following technical effects:

[0022] When making electrical connections, multiple battery packs of a battery group can be electrically connected to the corresponding energy storage converters via cables. The energy storage converters convert current to voltage, and the output current and voltage are connected to the corresponding positions of the busbar assembly via cables. In this way, each battery group undergoes current-to-voltage conversion through its corresponding energy storage converter before being concentrated and output to the busbar assembly. The current-to-voltage conversion between each battery group is carried out independently and does not affect each other. Finally, the current and voltage are collectively output through the busbar assembly. This design reduces circulating current between centralized DC clusters and improves system reliability and efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the energy storage container of this utility model;

[0024] Figure 2 This is a partial structural schematic diagram of the energy storage container of this utility model;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the first connecting member and the second connecting member of this utility model.

[0026] The meanings of the reference numerals in the attached drawings are as follows: 10, housing; 11, second compartment; 12, first compartment; 13, partition beam; 14, support beam; 141, connecting bolt; 15, second partition; 16, third partition; 17, first partition; 20, energy storage converter; 30, battery pack; 40, busbar assembly; 41, first connector; 411, first connecting section; 412, second connecting section. Detailed Implementation

[0027] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0030] See Figure 1 , Figure 2 as well as Figure 3 This utility model discloses an energy storage container, including a container body 10 and a conductive busbar assembly 40. The container body 10 has a storage compartment and a first partition 17. The first partition 17 is installed in the storage compartment, dividing it into a first compartment 12 and a second compartment 11. The first compartment 12 and the second compartment 11 are distributed along the height of the container body 10. Specifically, the first compartment 12 contains multiple energy storage converters 20, and the second compartment 11 contains multiple battery packs 30. Each battery pack 30 corresponds to one of the multiple energy storage converters 20, and each battery pack 30 is electrically connected to its corresponding energy storage converter 20. The conductive busbar assembly 40 is located in the first compartment 12 and is electrically connected to the multiple energy storage converters 20.

[0031] Based on the above structure, when using the energy storage container of this utility model, an energy storage converter 20 (such as a DC bus, transformer, capacitor, inverter, filter, etc.) can be placed in the first compartment 12, while multiple battery packs 30 can be placed in the second compartment 11.

[0032] Since the energy storage converter 20 and the battery pack 30 need to be electrically connected, multiple battery packs of a battery pack 30 can be electrically connected to the corresponding energy storage converter 20 via cables. The energy storage converter 20 performs current-to-voltage conversion, and the output current and voltage are connected to the corresponding position of the busbar assembly 40 via cables. In this way, each battery pack 30 performs current-to-voltage conversion through the corresponding energy storage converter 20 and then the output is concentrated to the busbar assembly 40. The current-to-voltage conversion between each battery pack 30 is carried out independently and does not affect each other. Finally, the output is concentrated through the busbar assembly 40. This design reduces the circulating current between centralized DC clusters and improves the system reliability and efficiency.

[0033] Furthermore, the circuit structure of the energy storage current device is led out using the busbar assembly 40, reducing the use of cables and avoiding overheating caused by concentrated cables, thus making it safer to use. Moreover, replacing cables with the busbar assembly 40 allows the busbar assembly 40 to be assembled within the internal structure of the housing 10, reducing cable routing space and improving space utilization.

[0034] Furthermore, both the energy storage converter 20 and the multiple battery packs 30 generate significant heat during operation. If the energy storage converter 20 and the battery packs 30 are placed in the same compartment without any obstruction, the heat generated by the energy storage converter 20 and the battery packs 30 will accumulate. Since the battery packs 30 may also cause safety hazards when overheated, this application adopts a first partition 17 to separate the compartment into a first chamber 12 and a second chamber 11. In this way, the energy storage converter 20 and the battery packs 30 are placed in different chambers, so that the heat will not affect each other.

[0035] Furthermore, the housing 10 is provided with multiple partitions, which are spaced apart in the first direction. A first partition 17 is provided between two adjacent partitions. That is, when assembling the first partition 17, both sides of the first partition 17 can be assembled with the partitions by screws, bolts or other structures.

[0036] Because multiple partitions are arranged in the first direction and extend along the height of the housing 10, both the first compartment 12 and the second compartment 11 are divided by partitions. That is, the part of the partition located in the first compartment 12 can divide the first compartment 12 into multiple first spaces, and the multiple energy storage converters 20 are individually set up for each first space in the first compartment 12. The part of the partition located in the second compartment 11 can divide the second compartment 11 into multiple second spaces, and the multiple battery packs 30 can be individually set up for each second space in the second compartment 11. In this way, the multiple energy storage converters 20 in the first compartment 12 are placed separately in the first direction, and the multiple battery packs 30 in the second compartment 11 are placed separately in the first direction. Each battery pack and its corresponding energy storage converter 20 are placed independently, further reducing the heat influence between them.

[0037] Specifically, the conductive busbar assembly 40 is provided with a first connector 41, and a corresponding second connector is provided on the partition. Thus, the assembly of the conductive busbar assembly 40 can be detachably connected to the second connector on the partition through the first connector 41, and can be directly assembled with the help of the partition inside the housing 10, without the need for a separate installation structure.

[0038] Of course, since there are multiple separators in the first direction, multiple first connectors 41 can also be set on the conductive bus assembly 40 at each separator position. Each separator is provided with a second connector. In this way, the second connector on each separator can correspond to the first connectors 41 at different positions on the conductive bus assembly 40 to achieve detachable assembly, and the conductive bus assembly 40 can be assembled in segments. The connection points are dispersed, and the connection structure is more stable.

[0039] Furthermore, the aforementioned partition includes multiple partition beams 13. In this embodiment, the same partition can be formed by three or four partition beams 13 or more, and the multiple partition beams 13 are arranged at intervals in the second direction. Thus, when the energy storage converter 20 is placed in the part of the two partitions located in the first compartment 12, the energy storage converter 20 is separated by multiple partition beams 13. At the same time, when the battery pack 30 is placed in the part of the two partitions located in the first compartment 12, the side of the battery pack is also separated by multiple partition beams 13. In this way, the gap between the two partition beams 13 can allow heat to dissipate, resulting in better heat dissipation performance compared to a partition structure formed directly by partition plates.

[0040] Based on the above structure, multiple partition beams 13 of the same partition can be connected by a support beam 14. The support beam 14 can connect multiple partition beams 13 of the same partition into one piece, resulting in a partition with better strength. A second connector is installed on the support beam 14. After the second connector on the support beam 14 is connected to the first connector 41 of the conductive busbar assembly 40, the conductive busbar assembly 40 can be supported, making the installation structure of the conductive busbar assembly 40 stable.

[0041] Further, see Figure 3 In this embodiment, the first connector 41 includes a first connecting segment 411 and two second connecting segments 412. The two second connecting segments 412 are connected to both sides of the first connecting segment 411. When the conductive bus assembly 40 is connected to the second connector at a single point through the first connector 41, the first connecting segment 411 of the first connector 41 can be connected to the conductive bus assembly 40 by means of bolts or screws, while the second connecting segment 412 is connected to the second connector. Since the second connecting segments 412 are provided on both sides of the first connecting segment 411 to connect to the second connector of the separator, the second connecting segment 412 of the same first connector 41 can form two connection points on the separator. Combined with the connection point of the first connecting segment 411 on the conductive bus assembly 40, three connection points can be formed in a triangular distribution above and below to realize the connection between the conductive bus assembly 40 and the separator, making the assembly structure more stable.

[0042] Furthermore, in this embodiment, the second connecting segment 412 is connected to the first connecting segment 411 in a bent state. That is, the side of the first connecting segment 411 is bent upward or downward to connect to the second connecting segment 412, so that there is a certain height difference between the second connecting segment 412 and the first connecting segment 411. This ensures a certain gap after the conductive bus assembly 40 is connected to the separator, maintaining a safe distance between the conductive bus assemblies 40 and other objects, thus ensuring electrical safety.

[0043] Specifically, a connecting hole is provided on the second connecting section 412, and the second connecting member is a connecting bolt 141. The connecting bolt 141 is threadedly engaged with the connecting hole. That is, when the first connecting member 41 of the conductive bus assembly 40 is assembled with the second connecting member of the separator, the second connecting section 412 of the first connecting member 41 fits against the separator, and then the connecting bolt 141 on the separator can be threaded through to the connecting hole to achieve a detachable connection.

[0044] Of course, in order to further stabilize the assembly structure, after the connecting bolt 141 is screwed to the second connecting section 412, a nut can be screwed into part of the connecting bolt 141 that extends out of the second connecting section 412 to prevent the connecting bolt 141 from falling off after assembly.

[0045] It should be noted that the first connector 41 and the second connector can also be implemented as a screw and nut structure in the prior art, or as a positioning pin and pin hole structure, or as a connecting structure such as a card block and card slot, so as to realize the detachable assembly between the conductive bus assembly 40 and the separator.

[0046] Furthermore, a second partition 15 can be provided inside the enclosure 10. The second partition 15 and multiple partitions are spaced apart in the first direction. The second partition 15 and the side plate of the enclosure 10 are spaced apart to form a third compartment. The control system is provided in the third compartment. The end of the busbar assembly 40 is connected to the control system through a cable. In this way, a first compartment 12 and a second compartment 11 for placing the energy storage converter 20 and the battery pack 30 are distributed in the height direction of the enclosure 10. At the same time, a third compartment for placing electrical components such as the control system is separated on the side of the enclosure 10. The internal space of the enclosure 10 is rationally utilized and the integration is high.

[0047] It should be noted that in this embodiment, the first direction and the second direction refer to the length direction and the width direction of the box 10, respectively.

[0048] More specifically, since the battery pack 30 and energy storage converter 20 stored inside the housing 10 will generate a lot of heat during operation, separate cooling pipe assemblies will be installed in the first compartment 12 and the second compartment 11 to cool the energy storage converter 20 and the battery pack 30 separately. In this way, the cooling circuits are independent and do not affect each other.

[0049] To facilitate the circulation of cooling fluid within the cooling pipe assembly, a cooling system is installed inside the housing 10. Therefore, a third partition 16 is installed in the third compartment, dividing the third compartment into two separate spaces. One separate space houses the control system, while the other separate space houses the cooling system. The cooling pipe assembly used for cooling the first compartment 12 and the second compartment 11 is connected to the cooling system, thus providing the cooling system with coolant and the power to circulate the coolant, enabling internal cooling circulation.

[0050] In order to make reasonable arrangement of various systems within the enclosure 10 and make better use of space, a third partition 16 is installed in the third compartment when a cooling system is installed. The third partition 16 can divide the third compartment into two separate spaces, front and back, so that the control system and the cooling system can be placed in two separate spaces.

[0051] Furthermore, the busbar assembly 40 includes a first busbar, a second busbar, and a third busbar, which are spaced apart. All three busbars are electrically connected to the energy storage converter 20. Specifically, the first, second, and third busbars correspond to phases A, B, and C of the three-phase power supply, respectively, providing a stable three-phase power supply to ensure the normal operation of the equipment. Additionally, a certain distance is maintained between adjacent busbars to achieve electrical insulation and heat dissipation.

[0052] Based on the structure of the conductive bus assembly including a first conductive bus, a second conductive bus, and a third conductive bus, multiple first connectors are provided on the first conductive bus, the second conductive bus, and the third conductive bus. The multiple first connectors on each conductive bus are corresponding to the positions of each separator. Each separator is provided with a second connector. In this way, detachable assembly can be achieved by the second connector on each separator corresponding to the first connectors at different positions on each conductive bus. The conductive buses can be assembled in segments, the connection points are dispersed, and the connection structure is more stable.

[0053] Furthermore, the first compartment 12 is located above the second compartment 11. Placing the energy storage converter 20 above the battery pack 30 allows for a relatively short distance between the two, reducing the length of the connecting cables, lowering cable costs and line losses. It also simplifies wiring, reduces wiring difficulty and complexity, and minimizes the risk of malfunctions caused by messy wiring.

[0054] Since hot air usually rises, the energy storage inverter 20 in this embodiment is located above the battery pack 30. Therefore, the heat generated by the energy storage inverter 20 when it is working can rise naturally by thermal convection. The heat generated by the energy storage inverter 20 located above can be dissipated more smoothly, avoiding heat accumulation near the battery pack 30, which is beneficial to the heat dissipation of the battery pack 30 and the energy storage inverter 20 itself.

[0055] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An energy storage container, characterized in that, include, The container has a housing compartment and a first partition. The first partition is installed in the housing compartment and divides the housing compartment into a first compartment and a second compartment. The first compartment and the second compartment are distributed in the height direction of the container. The first compartment is equipped with multiple energy storage converters; The second compartment is equipped with multiple battery packs, and each battery pack is correspondingly set with one of the multiple energy storage converters. Each battery pack is electrically connected to each of the energy storage converters. A conductive busbar assembly is located in the first compartment and is electrically connected to multiple energy storage converters.

2. The energy storage container according to claim 1, characterized in that, The enclosure is provided with multiple partitions, which are spaced apart in a first direction and separate the first compartment and the second compartment in the first direction; a first partition is provided between two adjacent partitions; a first connector is provided on the conductive busbar assembly, and a second connector is provided on the partition, and the first connector and the second connector are detachably connected.

3. The energy storage container according to claim 2, characterized in that, The separator includes multiple separator beams, which are spaced apart in the first direction; the separator beams of the same separator are connected by a support beam; the second connector is disposed on the support beam.

4. The energy storage container according to claim 3, characterized in that, The first connector includes a first connecting segment and two second connecting segments. The two second connecting segments are bent and connected to both sides of the first connecting segment. The first connecting segment is connected to the busbar assembly, and the second connecting segments are connected to the second connector.

5. The energy storage container according to claim 4, characterized in that, The second connecting section is provided with a connecting hole, and the second connecting member is a connecting bolt, which is threadedly engaged with the connecting hole.

6. The energy storage container according to any one of claims 2-5, characterized in that, The conductive busbar assembly is provided with a plurality of the first connectors spaced apart in the first direction.

7. The energy storage container according to any one of claims 2-5, characterized in that, The enclosure is provided with a second partition, which is spaced apart from a plurality of the partitions in the first direction; the second partition and the side panel of the enclosure are spaced apart to form a third compartment; the third compartment is provided with a control system; the end of the conductive busbar assembly is connected to the control system via a cable.

8. The energy storage container according to claim 7, characterized in that, The third compartment is equipped with a third partition, which divides the third compartment into two separate spaces; one of the separate spaces houses the control system; the other separate space houses the cooling system. Both the first compartment and the second compartment contain cooling pipe assemblies, which are connected to the cooling system.

9. The energy storage container according to any one of claims 2-5, characterized in that, The busbar assembly includes a first busbar, a second busbar, and a third busbar, which are spaced apart. The first busbar, the second busbar, and the third busbar are all electrically connected to the energy storage converter. The first connector is provided on the first busbar, the second busbar, and the third busbar.

10. The energy storage container according to any one of claims 1-5, characterized in that, The first compartment is located above the second compartment.

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