Battery rack assembly and energy storage container

Abstract

The invention discloses a battery rack assembly and an energy storage container, and relates to the technical field of energy storage equipment. The battery rack assembly comprises: a battery rack in which a plurality of battery compartments are arranged; and the high-voltage box is fixed on the outer side surface of the battery rack. According to the battery rack assembly, the high-voltage box is installed on the outer side face of the battery rack, the space in the battery rack is not occupied any more, the number of battery packs capable of being placed in a single battery rack can be increased, and therefore the capacity of the single battery rack can be conveniently increased by adjusting the installation position of the high-voltage box; therefore, the whole battery capacity of the energy storage container can be increased more conveniently by replacing the battery rack assembly.

Description

Technical Field

[0001] This invention relates to the field of energy storage equipment technology, and in particular to a battery rack assembly and an energy storage container. Background Technology

[0002] Currently, in some conventional liquid-cooled energy storage containers on the market, the battery packs are installed sequentially along the height of the battery rack, and a space is reserved at the top or bottom of the battery rack for installing a high-voltage box. Under certain special requirements, energy storage containers may need to be replaced to increase operating costs due to larger capacity requirements.

[0003] Therefore, how to more easily increase the battery capacity of energy storage containers is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a battery rack assembly and an energy storage container that can more easily increase battery capacity.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A battery rack assembly includes: a battery rack having multiple battery compartments disposed therein; and a high-voltage box fixed to the outer side of the battery rack.

[0007] Preferably, in the battery rack, each of the battery compartments is arranged sequentially along the height direction; the high-voltage box is fixed to one side of the battery rack in a first direction, and the opening of the battery compartment is located on one side of the battery rack in a second direction.

[0008] Preferably, each of the battery compartments is provided with a battery pack; and each of the battery packs in a battery rack is electrically connected to the same high-voltage box.

[0009] Preferably, the top and / or bottom of the housing are provided with hanging ears, and the housing is fixedly connected to the corresponding battery rack through the hanging ears.

[0010] An energy storage container includes the battery rack assembly as described above; it also includes a cabinet, in which the battery rack assembly is built; a plurality of battery rack assemblies are arranged sequentially along a first direction, and the battery racks and the high-voltage box in the battery rack assembly are arranged sequentially along the first direction; the thickness direction of the high-voltage box is parallel to the first direction.

[0011] Preferably, in the first direction, a first gap is provided between each pair of adjacent battery racks, and a high-voltage box is provided in each of the first gaps.

[0012] Preferably, the system further includes a combiner cabinet disposed in the cabinet, the combiner cabinet being a string combiner cabinet; wherein, each battery compartment on each battery rack assembly is provided with a battery pack, forming a battery cluster, and each battery cluster is electrically connected to the combiner cabinet.

[0013] Preferably, the system further includes a fire suppression system installed in the cabinet, the fire suppression system comprising: a gas fire suppression device, including a gas source, a main fire suppression pipeline connected to the outlet of the gas source, and multiple fire suppression branch lines connected to the outlet of the main fire suppression pipeline, each of the fire suppression branch lines being respectively connected to each of the battery compartments; and / or, a forced ventilation device, including a fan installed on the ventilation opening of the cabinet; and / or, a water fire suppression device, including a water fire suppression pipeline, the outlet of which is located at the top of the cabinet.

[0014] Preferably, the device further includes a liquid cooling system disposed in the cabinet. The liquid cooling system includes a main liquid cooling pipeline and a plurality of liquid cooling branch pipes connected to the main liquid cooling pipeline. The liquid cooling branch pipes are correspondingly connected to the liquid cooling pipes inside the high-voltage box and the liquid cooling pipes in the battery pack inside the battery compartment.

[0015] Preferably, the enclosure is provided with two high-pressure liquid cooling connectors, and the liquid cooling pipes inside the enclosure are located inside the enclosure. The two ends of the liquid cooling pipes inside the enclosure are respectively connected to the two high-pressure liquid cooling connectors, and the high-pressure liquid cooling connectors are connected to the liquid cooling branch pipes. The enclosure is provided with a fuse and a fuse base. The fuse base is located outside the fuse. The liquid cooling pipes inside the enclosure extend between the fuse base and the fuse, and the space between the fuse base and the fuse is filled with thermally conductive adhesive.

[0016] The battery rack assembly provided by the present invention includes: a battery rack having multiple battery compartments disposed therein; and a high-voltage box fixed to the outer side of the battery rack.

[0017] This type of battery rack assembly directly utilizes the outer side of the battery rack to install the high-voltage box, eliminating the need to occupy space inside the battery rack. This increases the number of battery packs that can be placed in a single battery rack. By adjusting the installation position of the high-voltage box, the capacity of a single battery rack can be easily increased. Consequently, by replacing the battery rack assembly, the overall battery capacity of the energy storage container can be increased more conveniently. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the assembly of the high-voltage box and battery rack inside the energy storage container according to a specific embodiment of the present invention;

[0020] Figure 2 This is a top view of the energy storage container provided in a specific embodiment of the present invention;

[0021] Figure 3 An isometric view of the fire protection system inside the energy storage container according to a specific embodiment of the present invention;

[0022] Figure 4 This is an external view of the high-voltage box inside the energy storage container according to a specific embodiment of the present invention;

[0023] Figure 5 This is an internal structural diagram of the high-voltage box inside the energy storage container according to a specific embodiment of the present invention.

[0024] Figure 6 This is a side view of the fuse inside the energy storage container according to a specific embodiment of the present invention;

[0025] Figure 7 for Figure 6 AA cross-section view;

[0026] Figure 8 This is an isometric view of the liquid cooling device inside the energy storage container, which is a specific embodiment of the present invention.

[0027] Figure label:

[0028] Battery rack 1, battery compartment 1-1, high voltage box 1-2, battery pack 1-3, first gap 1-4;

[0029] 2. Housing 2, sheet metal part 2-1, power connector 2-2, first power connector 2-21, second power connector 2-22, third power connector 2-23, fourth power connector 2-24, control power switch 2-3, running indicator light 2-4, signal transmission connector 2-5, first hanging ear 2-6, upper mounting plate 2-7, cover plate 2-8, second hanging ear 2-9, bottom shell 2-10;

[0030] Main negative contactor 3,

[0031] Pre-charge contactor 4, second contactor mounting plate 4-1;

[0032] Shunt 5;

[0033] Main positive contactor 6, first contactor mounting plate 6-1;

[0034] Fuse 7, fuse base 7-1, thermally conductive adhesive 7-2

[0035] Pre-charge resistance 8;

[0036] Box insulation board 9;

[0037] High-voltage box copper busbar 10;

[0038] Cabinet 12, Fan rain cover 12-1, Fire alarm 12-2, Cable tray 12-3, Pipe fittings and fasteners 12-4;

[0039] Liquid cooling device 13, liquid cooler 13-1, high-pressure box liquid cooling connector 13-2, liquid cooling pipe inside the box 13-3, return water pipe 13-4, inlet water pipe 13-5, return water pipe battery pack connector 13-6, inlet water pipe battery pack connector 13-7, return water pipe high-pressure box connector 13-8, inlet water pipe high-pressure box connector 13-9, return water pipe branch pipe 13-10, inlet water pipe branch pipe 13-11, drain valve 13-12, water pipe clamp 13-13, lower water pipe support 13-14, upper water pipe support 13-15, water ball valve 13-16;

[0040] Gas cylinder 14, fire intelligent control box 14-1, fire power supply box 14-2, gas fire branch 14-3, gas distribution line 14-4, main gas fire pipeline 14-5;

[0041] Combiner cabinet 15;

[0042] PCS16;

[0043] Water supply and disinfection pipeline 17;

[0044] First direction X, second direction Y, altitude direction Z. Detailed Implementation

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] The core of this invention is to provide a battery rack assembly and an energy storage container, which can more easily increase battery capacity.

[0047] For a specific embodiment of the battery rack assembly provided by this invention, please refer to [the original text]. Figures 1 to 8 It includes a battery rack 1 and a high-voltage box 1-2. The battery rack 1 has multiple battery compartments 1-1, which are used to install battery packs 1-3. The high-voltage box 1-2 is fixed to the outer side of the battery rack 1, specifically located on one side of the battery rack 1 in the horizontal direction.

[0048] This type of battery rack assembly directly utilizes the outer side of the battery rack 1 to install the high-voltage box 1-2, without occupying the space inside the battery rack 1. This increases the number of battery packs 1-3 that can be placed in a single battery rack 1. By adjusting the installation position of the high-voltage box 1-2, the capacity of a single battery rack 1 can be easily increased. Furthermore, by replacing the battery rack assembly, the overall battery capacity of the energy storage container can be increased more conveniently.

[0049] On battery holder 1, such as Figure 1 As shown, the battery compartments 1-1 are arranged sequentially along the height direction Z, for example, nine battery compartments 1-1 are arranged sequentially. The high-voltage box 1-2 is fixed to one side of the battery rack 1 in the first direction X, and the opening of the battery compartment 1-1 is located on one side of the battery rack 1 in the second direction Y. At this time, the battery pack 1-3 can be installed in the battery compartment 1-1 along the second direction Y, while the high-voltage box 1-2 is located on the outer side of the battery rack 1 in the first direction X, which can prevent the high-voltage box 1-2 from blocking the battery pack 1-3 along the second direction Y.

[0050] It should be noted that in some embodiments, the first direction X, the second direction Y, and the height direction Z are three directions that are perpendicular to each other; in practical applications, the height direction Z corresponds to the up and down direction, and the first direction X and the second direction Y are both horizontal directions.

[0051] like Figure 1 As shown, each battery compartment 1-1 contains a battery pack 1-3. On a battery rack 1, each battery pack 1-3 is electrically connected to the same high-voltage box 1-2, forming a battery cluster. Specifically, the high-voltage box 1-1 can be fixedly connected to the battery rack 1 or an adjacent battery rack 1. Figure 2 As shown, a cabinet 12 of an energy storage container can be equipped with 12 battery rack assemblies, each corresponding to 12 battery clusters. In a 20-foot energy storage container, by replacing the battery rack assemblies in this embodiment, the number of battery compartments 1-1 on a single battery rack 1 can be increased from the original 8 to 9, and the capacity of a single battery rack 1 can be expanded by 0.64 MWh. The energy storage container can achieve a capacity of 5.64 MWh, resulting in higher economic benefits.

[0052] In addition to the aforementioned battery rack assembly, the present invention provides an energy storage container including a battery rack assembly, which may specifically include the battery rack assembly in any of the above embodiments. Furthermore, the energy storage container also includes a cabinet 12, in which the battery rack 1 and high-voltage boxes 1-2 are housed. The energy storage container can meet the IP54 protection rating through the structure of the cabinet 12 and the sealing process.

[0053] Please refer to Figures 1 to 8In the embodiment shown, multiple battery rack assemblies are arranged sequentially along the first direction X, and the battery rack 1 and high-voltage boxes 1-2 in the battery rack assembly are arranged sequentially along the first direction X. Specifically, when at least two high-voltage boxes 1-2 are provided between two battery racks 1, only one high-voltage box 1-2 is provided at the same height, and the high-voltage boxes 1-2 are arranged sequentially in the height direction Z.

[0054] In order to meet the needs of fire protection and heat dissipation, gaps are usually reserved between the battery racks 1 and between the inner wall of the cabinet 12 and the battery racks 1. According to the size of the high-voltage box 1-2, the first gap 1-4 can be directly selected from these gaps to accommodate the high-voltage box 1-2; or, the size of some of these gaps can be adjusted to form the first gap 1-4 that can accommodate the high-voltage box 1-2.

[0055] In this embodiment, the high-voltage box 1-2 of the energy storage container can be directly installed in the cabinet 12 along with the corresponding battery rack 1. The high-voltage box 1-2 connected to the side of the battery rack 1 can be directly installed by utilizing the first gap 1-4 between the adjacent battery rack 1 or the battery rack 1 and the cabinet 12, thereby improving the utilization rate of the gap space outside the battery rack 1.

[0056] In some embodiments, as Figure 1 As shown, the thickness direction of the casing 2 of the high-voltage box 1-2 is parallel to the first direction X, and its thickness matches the original gap size of the battery rack 1 in the first direction X. Furthermore, the length direction of the casing 2 is parallel to the height direction Z, and the width direction is parallel to the second direction Y.

[0057] Regarding the arrangement of battery holder 1, in some embodiments, such as Figure 2 As shown, in the cabinet 12, multiple battery racks 1 can be arranged in a matrix along the first direction X and the second direction Y. Two rows of battery racks 1 can be set in the second direction Y, and multiple battery racks 1, for example, 6, can be set in each row along the first direction X. (Reference) Figure 2 The 12 battery racks 1 are arranged in a 2×6 matrix, each corresponding to a battery cluster, and each battery cluster can be equipped with a separate high-voltage box 1-2. Optionally, the battery pack 1-3 can use high-energy-density 314Ah cells. Of course, in other embodiments, the battery racks 1 can also be arranged sequentially only along the first direction X.

[0058] In some embodiments, as Figure 7 As shown, the battery rack 1 has multiple battery compartments 1-1, which are arranged sequentially along the height direction Z. Each battery compartment 1-1 contains a battery pack 1-3. In this embodiment, compared to the traditional battery rack 1, the original high-voltage box mounting position can be eliminated and replaced with a single battery compartment 1-1, adding a layer of battery pack 1-3 mounting.

[0059] In some embodiments, each battery pack 1-3 may be installed in its corresponding battery compartment 1-1 along the second direction Y. Furthermore, as... Figure 1 As shown, the power connector 2-2 on each high-voltage box 1-2 for electrically connecting other equipment such as battery pack 1-3 can be located on one side of the high-voltage box 1-2 in the second direction Y to facilitate electrical connection operation.

[0060] In some embodiments, in the first direction X, such as Figure 2 As shown, a first gap 1-4 is provided between each pair of adjacent battery racks 1, and a high-voltage box 1-2 is respectively installed in each first gap 1-4 to fully utilize the space of the high-voltage box 1-2 and the battery rack 1 in the first direction X. Alternatively, in other embodiments, among the multiple gaps formed by each pair of adjacent battery racks 1 along the first direction X, some gaps are first gaps 1-4 for installing the high-voltage box 1-2; the remaining gaps are second gaps and can be left empty. In addition, each first gap 1-4 can be formed in the gap between the battery racks 1 arranged in the first direction X, and not between the battery rack 1 and the cabinet 12.

[0061] In some embodiments, two high-voltage boxes 1-2 are provided in a portion of the first gap 1-4, which can be used to electrically connect two battery clusters on both sides respectively. In this case, multiple high-voltage boxes 1-2 can be installed using one first gap 1-4, which facilitates the unified assembly of multiple high-voltage boxes 1-2. In other embodiments, only one high-voltage box 1-2 can be provided in the first gap 1-4 to match the remaining battery clusters. Figure 2 For example, it has 10 first gaps 1-4, in which 2 first gaps 1-4 are each equipped with 2 high-voltage boxes 1-2; in the remaining 8 first gaps 1-4, 1 high-voltage box 1-2 is set, thus realizing the setting of 12 high-voltage boxes 1-2.

[0062] To achieve a fixed connection between the high-voltage box 1-2 and the battery rack 1, such as Figure 1 As shown, the top and / or bottom of the housing 2 are provided with hanging ears. The housing 2 is fixedly connected to the corresponding battery rack 1 through the hanging ears, so that the high voltage box 1-2 can be fixedly connected to the battery rack 1 in a wall-mounted manner by means of the hanging ears. The connection operation is carried out from the height direction Z, without occupying the space near the housing 2 in the first direction X and the second direction Y. Specifically, the hanging ears can be connected to the battery rack 1 by screws, or in other embodiments, they can be fixed by welding.

[0063] In some embodiments, in order to meet the connection of high voltage boxes 1-2 on battery racks 1 of different specifications, the mounting ears on the box body 2 can be detachably connected, so that the mounting ears can be adaptively installed on the box body 2 according to different installation position requirements, specifically, they can be fixed with bolts.

[0064] In some embodiments, a fixed crossbar may be added to one side of the battery holder 1 in the first direction X for adaptive connection of the hanging ear.

[0065] like Figure 2 As shown, a combiner cabinet 15 is also provided in the cabinet 12, and the high-voltage box 1-2 is electrically connected to the combiner cabinet 15. The combiner cabinet 15 is specifically a string combiner cabinet, and each battery compartment 1-1 on each battery rack assembly is provided with a battery pack 1-3, forming a battery cluster. Each battery cluster is electrically connected to the combiner cabinet 15. By using a string combiner cabinet, each battery cluster can be connected independently without interference, and fault isolation is also convenient.

[0066] In some embodiments, within the cabinet 12, the combiner cabinet 15 may be disposed on one side of a set of battery racks 1 in the first direction X.

[0067] like Figure 3 As shown, to achieve fire protection for the energy storage container, the fire protection system includes a gas fire suppression system, a forced ventilation system, and a water fire suppression system to achieve comprehensive fire protection.

[0068] Specifically, the gas smothering device includes a gas source, a main gas smothering pipeline 14-5 connected to the outlet of the gas source, and multiple gas smothering branch pipelines 14-3 connected to the outlet of the main gas smothering pipeline 14-5. Each gas smothering branch pipeline 14-3 can extend through one side of the battery rack 1 in the first direction X into each battery compartment 1-1, thereby achieving gas smothering of each battery compartment 1-1. The gas source can be a gas cylinder 14 installed in the cabinet 12.

[0069] For example, the main gas extinguishing pipe 14-5 is located at the top of the cabinet 12 and includes two horizontal gas extinguishing pipes located above the two rows of battery racks 1 arranged in the second direction Y, and also includes multiple vertical gas extinguishing pipes connected below the horizontal gas extinguishing pipes. The vertical gas extinguishing pipes are arranged one-to-one with the battery racks 1, and each vertical gas extinguishing pipe is provided with a gas extinguishing branch 14-3 corresponding one-to-one with each battery compartment 1-1 on a battery rack 1.

[0070] For example, the cabinet 12 also includes a fire power supply box 14-2 and a fire intelligent control box 14-1. Both the fire power supply box 14-2 and the fire intelligent control box 14-1 are electrically connected to a gas source. The fire intelligent control box 14-1 can automatically control the gas source. For example, based on the detection results of the detection components in the cabinet 12, it can control the start of the gas source. The detection components may include a combustible gas detector, a smoke sensor, and a temperature sensor.

[0071] Specifically, the forced ventilation system includes a fan installed on the ventilation opening of the cabinet 12, which can exhaust combustible gases in the cabinet 12 to the outside. In addition, a fan rain cover 12-1 is also provided on the ventilation opening to ensure safety during use.

[0072] Specifically, the water fire suppression system includes a water fire suppression pipe 17, the outlet of which is located at the top of the cabinet 12. Specifically, the inlet of the water fire suppression pipe 17 is connected to a water source, and water is supplied to the cabinet 12 via its outlet. Additionally, the water fire suppression pipe 17 can be located between two rows of battery racks 1 in the second direction Y.

[0073] Specifically, a fire alarm 12-2, such as an audible and visual alarm, can also be installed in the cabinet 12 to promptly alert staff to any emergency.

[0074] To ensure the safe operation of high-voltage boxes 1-2, such as Figures 4 to 8 As shown, the energy storage container also includes a liquid cooling device 13 located in the cabinet 12.

[0075] The liquid cooling device 13 includes a main liquid cooling pipeline and multiple liquid cooling branch pipes connected to the main liquid cooling pipeline. The liquid cooling branch pipes are connected to the liquid cooling pipes 13-3 inside the box 2 of the high voltage box 1-2 and the liquid cooling pipes in the battery pack 1-3 inside the battery compartment 1-1. The liquid cooling device can cool the environment inside the high voltage box 1-2 and the battery pack 1-3, thereby achieving temperature control of the high voltage box 1-2 and the battery pack 1-3.

[0076] For example, such as Figure 5 and Figure 6 As shown, the high-pressure box 1-2 has two high-pressure box liquid-cooling connectors 13-2 on its outer casing 2, namely the inlet water pipe high-pressure box connector 13-9 and the return water pipe high-pressure box connector 13-8, for the inlet and outlet of the liquid-cooling pipe 13-3 inside the box. The liquid-cooling pipe 13-3 is located inside the casing 2, and its two ends are connected to the two high-pressure box liquid-cooling connectors 13-2 respectively. The high-pressure box liquid-cooling connectors 13-2 are connected to the liquid-cooling branch pipes, and the liquid-cooling pipe 13-3 encloses part of the functional components inside the casing 2.

[0077] For example, the housing 2 is provided with a fuse 7 and a fuse base 7-1. The fuse base 7-1 is located outside the fuse 7. The liquid cooling pipe 13-3 inside the housing extends between the fuse base 7-1 and the fuse 7. The space between the fuse base 7-1 and the fuse 7 is filled with thermally conductive adhesive 7-2, specifically thermally conductive potting compound, to ensure the liquid cooling effect of the fuse 7.

[0078] For example, the fuse base 7-1 is a U-shaped base, which wraps around the three sides of the fuse 7. The liquid cooling branch 13-3 extends into the U-shaped base and passes between the inner wall of the U-shaped base and the three sides of the fuse 7 to ensure the liquid cooling area.

[0079] For example, such as Figure 8As shown, the main liquid cooling pipeline includes an inlet pipe 13-5 located at the bottom of the cabinet 12 and a return pipe 13-4 located at the top of the cabinet 12. The liquid cooling branch pipes include return pipe branch pipes 13-10 and inlet pipe branch pipes 13-11. Each battery rack 1 is provided with one return pipe branch pipe 13-10 and one inlet pipe branch pipe 13-11. The inlet of the inlet pipe branch pipe 13-11 is connected to the outlet of the inlet pipe 13-5, and the outlet of the inlet pipe branch pipe 13-11 is connected to the inlet of multiple inlet pipe high-pressure box connectors 13-9 and the inlet of the inlet pipe battery pack connector 13-7. The inlet of the return pipe branch pipe 13-10 is connected to the outlet of multiple return pipe high-pressure box connectors 13-8 and the outlet of multiple return pipe battery pack connectors 13-6, and the outlet of the return pipe branch pipe 13-10 is connected to the return pipe 13-4 to realize the circulation of coolant.

[0080] To minimize the size of the first gap 1-4 between the battery racks 1 used to accommodate the high-voltage box 1-2, the high-voltage box 1-2 can be made ultra-thin.

[0081] Specifically, in high-pressure boxes 1-2, please refer to... Figures 1 to 8 It includes a housing 2 and main circuit components, precharge circuit components, and a battery control unit (BCU) board respectively located within the housing 2. The main circuit components work together to complete the on / off switching of the main circuit, the precharge circuit components work together to complete precharge protection, and the BCU board can be used to collect voltage, current, and temperature data, control the on / off switching of contactors, and perform other battery control operations to meet the functions carried by conventional high-voltage boxes 1-2.

[0082] like Figures 4 to 5 As shown, the housing 2 has a bottom plate and a cover plate 2-8 at its two ends in the thickness direction. Each main circuit component and each precharge circuit component is arranged side-by-side along the length and / or width direction of the housing 2 and is fixed to the bottom plate. That is, these components are arranged in a single layer in the thickness direction of the housing 2. The BCU board is fixed to the cover plate 2-8.

[0083] In addition, the bottom shell 2-10 and cover plate 2-8 of the high voltage box 1-2 are arranged in sequence along the direction away from the battery rack 1 to which they are connected. The first hook 2-6 and the signal transmission connector 2-5 are set on the upper mounting plate 2-7 on the top of the box 2, and the second hook 2-9 is set on the lower mounting plate at the bottom of the box 2.

[0084] like Figure 5 As shown, a power connector 2-2 and a signal transmission connector 2-5 are installed through the side plate of the housing 2 located between the bottom plate and the cover plate 2-8. The power connector 2-2 is electrically connected to the main circuit components, and the signal transmission connector 2-5 is electrically connected to the BCU board to realize the electrical connection with external equipment.

[0085] It should be noted that the thickness direction of the enclosure 2 refers to the direction corresponding to the smallest dimension among the external dimensions of the high-voltage box 1-2. The length direction, width direction, and thickness direction of the enclosure 2 are perpendicular to each other, and the length dimension of the enclosure 2 is not less than the width dimension. For example, the thickness of the high-voltage box 1-2 is 45-60mm. For instance, some high-voltage boxes 1-2 have a rectangular enclosure 2, with external dimensions of 550mm (length) × 200mm (width) × 55mm (thickness).

[0086] Based on the above layout of components within the high-voltage box 1-2, the stacking of components in the thickness direction of the box 2 is minimal, not exceeding two layers. Each component is arranged as much as possible along the length and width directions of the box 2, ensuring that the high-voltage box 1-2 has a very small size in the thickness direction, which is beneficial for achieving the ultra-thin design of the high-voltage box 1-2. Furthermore, the power connector 2-2 and the signal transmission connector 2-5 are located on the side plate between the bottom plate and the cover plate 2-8, allowing for external electrical connection operations on one side of the box 2 in the length or width direction, reducing the need for reserved operating space in the thickness direction. Thus, when assembled into an energy storage container, the reserved gaps and slots inside the energy storage container can be used directly for installation, making the installation of the high-voltage box 1-2 more flexible. There is no need to reserve a separate installation space on the battery rack 1, allowing more space on the battery rack 1 for installing the battery pack 1-3, which can increase the battery capacity.

[0087] In some embodiments, as Figure 4 and Figure 5 As shown, the main circuit components include fuse 7, main positive contactor 6, and main negative contactor 3.

[0088] Additionally, power connector 2-2 includes a first power connector 2-21, a second power connector 2-22, a third power connector 2-23, and a fourth power connector 2-24. The first power connector 2-21, fuse 7, main positive contactor 6, and second power connector 2-22 are electrically connected in sequence; the third power connector 2-23, main negative contactor 3, and fourth power connector 2-24 are electrically connected in sequence.

[0089] Furthermore, the fuse 7, the main positive contactor 6, and the main negative contactor 3 are arranged sequentially along the length of the enclosure 2. The application of this linear arrangement simplifies the complex bending or crossing required between the copper busbars for electrical connections between components. The copper busbars can extend basically along the width and length of the enclosure 2, which helps to shorten the electrical path and facilitates the uniform flow of cooling air through each component, thus promoting heat dissipation.

[0090] It should be noted that the electrical connections between the components in the embodiments of this application can be achieved using high-voltage box copper busbars 10.

[0091] In some embodiments, the housing 2 is further provided with a shunt 5, which allows the battery control unit to sample the current. The shunt 5 is connected in series between the third power connector 2-23 and the main negative contactor 3. Along the length of the housing 2, the shunt 5 is located between the main positive contactor 6 and the main negative contactor 3, which facilitates its series connection with the main negative contactor 3 and the third power connector 2-23 and helps to shorten the electrical path.

[0092] In some embodiments, the first power connector 2-21, the second power connector 2-22, the third power connector 2-23, and the fourth power connector 2-24 are arranged sequentially along the length of the housing 2 and are all located on the first side plate at one end of the housing 2 in the width direction, facilitating unified electrical connection of each power connector 2-2 to external devices from the same side of the housing 2. Additionally, the control power switch 2-3 and the operation indicator light 2-4 of the high-voltage box 1-2 can also be located on the first side plate.

[0093] In some embodiments, the precharge circuit element includes a precharge contactor 4 and a precharge resistor 8, and the branch of the precharge resistor 8 and the precharge contactor 4 connected in series is connected in parallel to the main positive contactor 6.

[0094] Specifically, if Figure 4 and Figure 5 As shown, along the length of the housing 2: the fuse 7, the main positive contactor 6, the shunt 5, and the pre-charge contactor 4 are arranged in sequence, and the main negative contactor 3 and the pre-charge contactor 4 are located on the same side of the shunt 5 and the main positive contactor 6; along the width of the housing 2: the main negative contactor 3 and the pre-charge contactor 4 are arranged in sequence, the fuse 7 and the pre-charge resistor 8 are arranged in sequence, and the main negative contactor 3 and the pre-charge resistor 8 are located on the same side of the pre-charge contactor 4.

[0095] At this time, the pre-charge resistor 8 and the pre-charge contactor 4 are roughly located diagonally in the housing 2, and the main positive contactor 6 is roughly centered between the pre-charge resistor 8 and the pre-charge contactor 4. This facilitates the electrical connection between the pre-charge resistor 8, the pre-charge contactor 4 and the main positive contactor 6, while making full use of the remaining space in the housing 2 outside the main circuit components.

[0096] Specifically, if Figure 5 As shown, the length directions of the fuse 7 and the pre-charge resistor 8 are parallel to the length direction of the housing 2, which helps to reduce the size of the housing 2 in its width direction, making the housing 2 generally a strip-shaped blade-like housing 2, which is convenient for installation in the strip-shaped gap space in the energy storage container. Among them, the end of the fuse 7 away from the main positive contactor 6 in the length direction of the housing 2 is electrically connected to the first power connector 2-21, and the end closer to the main positive contactor 6 is electrically connected to the main positive contactor 6; the end of the pre-charge resistor 8 in the length direction of the housing 2 closer to the main positive contactor 6 is electrically connected to the main positive contactor 6, which can shorten the electrical path.

[0097] Specifically, the enclosure 2 is also equipped with a pre-charge resistor insulating plate and a pre-charge resistor mounting plate. The pre-charge resistor insulating plate is made of epoxy board. The pre-charge resistor insulating plate and the pre-charge resistor mounting plate are arranged sequentially in the thickness direction of the enclosure 2, away from the bottom plate. The pre-charge resistor 8 is fixed to the pre-charge resistor mounting plate, and the pre-charge resistor mounting plate is fixed to the pre-charge resistor insulating plate. The enclosure 2 is insulated and installed on the bottom plate of the enclosure 2 through the pre-charge resistor insulating plate.

[0098] In some embodiments, as Figure 4 and Figure 5 As shown, an insulating plate 9, made of epoxy board, is fixedly connected to one inner side wall of the enclosure 2 in the thickness direction. A first contactor mounting plate 6-1 and a second contactor mounting plate 4-1 are fixed to the side of the insulating plate 9 away from the bottom plate in the thickness direction of the enclosure 2. The first contactor mounting plate 6-1 and the second contactor mounting plate 4-1 are arranged sequentially along the length direction of the enclosure 2. The main positive contactor 6 is fixed to one side of the first contactor mounting plate 6-1 in the length direction of the enclosure 2, and the pre-charge contactor 4 and the main negative contactor 3 are fixed to one side of the second contactor mounting plate 4-1 in the length direction of the enclosure 2. While ensuring insulated assembly, the mounting plates facilitate improved assembly stability of the main positive contactor 6, the pre-charge contactor 4, and the main negative contactor 3. Additionally, the fuse 7 and the shunt 5 can be fixed to the insulating plate 9 respectively.

[0099] In some embodiments, as Figure 4 and Figure 5 As shown, the housing 2 includes a bottom shell 2-10 and a cover plate 2-8 fixed to the opening of the bottom shell 2-10. Specifically, the housing 2 is generally rectangular, and the housing 2 can be a sheet metal part 2-1.

[0100] Specifically, the opening of the bottom shell 2-10 is located at one end of the bottom shell 2-10 in the thickness direction of the box body 2, and the other end is the bottom plate. The bottom shell 2-10 and the cover plate 2-8 form the inner cavity of the box body 2. For example, the cover plate 2-8 is bolted to the opening of the bottom shell 2-10 to facilitate the maintenance of the internal structure of the box body 2.

[0101] Specifically, if Figure 5 As shown, the main circuit components and precharge circuit components are all fixed in the bottom shell 2-10, and each main circuit component and precharge circuit component is fixed on the bottom plate of the bottom shell 2-10 opposite to the opening. In addition, the enclosure insulation plate 9 can be set on this bottom plate.

[0102] Specifically, inside the housing 2, the BCU board is located on one side of the pre-charge resistor 8 in the thickness direction of the housing 2; the bottom shell 2-10 has a signal transmission connector 2-5 through the end plate of the end near the fuse 7 and the pre-charge resistor 8 in the length direction of the housing 2. The signal transmission connector 2-5 is electrically connected to the BCU board, which can shorten the length of the electrical connection between the signal transmission connector 2-5 and the BCU board.

[0103] Specifically, the BCU board is fixed to the cover plate 2-8, and the two form a cover plate assembly. The cover plate assembly is detachably fixed to the opening of the bottom shell 2-10. At this time, the BCU board can be integrally installed on the bottom shell 2-10 along with the cover plate 2-8.

[0104] Specifically, in the cover plate assembly, a cover plate insulating plate is fixed to the side of the cover plate 2-8 facing the bottom shell 2-10, and the BCU plate is fixed to the cover plate insulating plate. A BCU insulating plate is also fixed to the side of the BCU plate away from the cover plate insulating plate to ensure the insulating assembly of the BCU plate. The cover plate insulating plate and the BCU insulating plate can be made of epoxy board.

[0105] Specifically, the enclosure insulation plate 9 and the pre-charge resistance insulation plate are fixed to the bottom plate in the bottom shell 2-10, and together with the cover plate insulation plate on the cover plate 2-8, the insulation plates can be reasonably used to isolate the safety distance between the various components in the extremely small and ultra-thin enclosure 2, so that the overall high voltage box 1-2 meets the electrical clearance requirements.

[0106] Specifically, the hanging ears are fixed to the bottom shell 2-10. The hanging ears include a first hanging ear 2-6 and a second hanging ear 2-9 located at both ends of the box body 2 in the length direction, so as to ensure reliable connection between the high voltage box 1-2 and the corresponding battery rack 1.

[0107] In the energy storage container of this application embodiment, most of the components are arranged vertically in the vertical direction inside the high-voltage box 1-2. Their thickness dimension is small, and they can be installed in the first gap 1-4 between adjacent battery racks 1. The gap between battery racks 1 can be used reasonably without occupying the space inside the battery rack 1. The space originally used to install the high-voltage box 1-2 on the battery rack 1 can be used to add a battery pack 1-3, thereby increasing the battery capacity of the battery cluster corresponding to a single battery rack 1.

[0108] It should be noted that when an element is referred to as "fixing" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as "connecting" another element, it can be directly connected to the other element or there may be an intervening element. Furthermore, in the description of this invention, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0109] The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 limiting the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0110] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0111] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0112] The battery rack assembly and energy storage container provided by this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A battery rack assembly, characterized in that, include: Battery rack (1), which contains multiple battery compartments (1-1). High voltage box (1-2) is fixed to the outer side of the battery rack (1).

2. The battery rack assembly according to claim 1, characterized in that, In the battery rack (1), each of the battery compartments (1-1) is arranged sequentially along the height direction (Z); the high voltage box (1-2) is fixed to one side of the battery rack (1) in the first direction (X), and the opening of the battery compartment (1-1) is located on one side of the battery rack (1) in the second direction (Y).

3. The battery rack assembly according to claim 1, characterized in that, Each of the battery compartments (1-1) is provided with a battery pack (1-3); each of the battery packs (1-3) in a battery rack (1) is electrically connected to the same high-voltage box (1-2).

4. The battery rack assembly according to claim 1, characterized in that, The top and / or bottom of the housing (2) are provided with hanging ears, and the housing (2) is fixedly connected to the corresponding battery rack (1) through the hanging ears.

5. An energy storage container, characterized in that, It includes the battery rack assembly as described in any one of claims 1 to 4; it also includes a cabinet (12) in which the battery rack assembly is built into the cabinet (12). Multiple battery rack assemblies are arranged sequentially along a first direction (X), and the battery rack (1) and the high voltage box (1-2) in the battery rack assembly are arranged sequentially along the first direction (X); the thickness direction of the box body (2) of the high voltage box (1-2) is parallel to the first direction (X).

6. The energy storage container according to claim 5, characterized in that, In the first direction (X), a first gap (1-4) is provided between each pair of adjacent battery racks (1), and a high-voltage box (1-2) is provided in each of the first gaps (1-4).

7. The energy storage container according to claim 5, characterized in that, It also includes a junction box (15) disposed in the cabinet (12), wherein the junction box (15) is a string junction box; Each of the battery compartments (1-1) on each of the battery rack assemblies is provided with a battery pack (1-3) and forms a battery cluster. Each battery cluster is electrically connected to the combiner cabinet (15).

8. The energy storage container according to claim 5, characterized in that, It also includes a fire protection system installed in the cabinet (12), the fire protection system comprising: A gas fire suppression device includes a gas source, a main gas fire suppression pipeline (14-5) connected to the outlet of the gas source, and multiple gas fire suppression branches (14-3) connected to the outlet of the main gas fire suppression pipeline (14-5), with each gas fire suppression branch (14-3) correspondingly connected to each of the battery compartments (1-1). And / or, a forced ventilation system, including a fan located on a ventilation opening in the cabinet (12); And / or, a water fire suppression system, including a water fire suppression line (17), the outlet of which is located at the top inside the cabinet (12).

9. The energy storage container according to claim 5, characterized in that, It also includes a liquid cooling device (13) installed in the cabinet (12). The liquid cooling device (13) includes a liquid cooling main pipeline and a plurality of liquid cooling branch pipes connected to the liquid cooling main pipeline. The liquid cooling branch pipes are correspondingly connected to the in-box liquid cooling pipe (13-3) in the cabinet (2) of the high-voltage box (1-2) and the battery pack liquid cooling pipe in the battery pack (1-3) in the battery compartment (1-1).

10. The energy storage container according to claim 9, characterized in that, Two high-pressure liquid cooling connectors (13-2) are provided outside the box (2). The liquid cooling pipe (13-3) inside the box is located inside the box (2). The two ends of the liquid cooling pipe (13-3) inside the box are respectively connected to the two high-pressure liquid cooling connectors (13-2). The high-pressure liquid cooling connectors (13-2) are connected to the liquid cooling branch pipe. The housing (2) is equipped with a fuse (7) and a fuse base (7-1). The fuse base (7-1) is located outside the fuse (7). The liquid cooling pipe (13-3) inside the housing extends between the fuse base (7-1) and the fuse (7). Thermally conductive adhesive (7-2) is filled between the fuse base (7-1) and the fuse (7).

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