High-voltage cascade energy storage cluster frame used under high load

Abstract

According to the high-voltage cascade energy storage cluster frame used under the high load, a plurality of energy storage cluster frames are connected in series, a plurality of battery packs, a battery connecting box and a high-voltage control cabinet are vertically and sequentially arranged in a shell from bottom to top in a stacked mode, and the four corners of the bottom face of the shell are connected with a bottom frame through insulators; a liquid cooling plate is arranged between the bottom face of the battery pack and the top face of the stacking support, a liquid cooling circulation opening is communicated with the liquid cooling plate and the high-voltage control cabinet through a battery liquid cooling pipe and a control cabinet liquid cooling pipe respectively, and a plurality of energy storage cluster frames are used for series connection after an original large-size and large-capacity energy storage cluster frame is shrunk. Therefore, efficient and high-voltage discharging can be achieved in a short time, normal operation of the energy storage cluster frame at the temperature during high-voltage output is achieved, the insulator is arranged at the bottom of the shell so that safe insulation of the whole cluster frame under the high-voltage condition can be guaranteed, and high-voltage combined energy storage output can be achieved under the high load.

Description

Technical Field

[0001] This article belongs to the technical field of high-voltage cascade cluster racks, and specifically relates to a high-voltage cascade energy storage cluster rack used under high load. Background Art

[0002] Electric energy storage systems are developing towards high voltage, large capacity, clustering and scale, which puts higher requirements on the charging and discharging power of energy storage systems.

[0003] A battery cluster is usually composed of multiple module boxes (battery PACKs), high-voltage boxes, liquid cooling pipes, etc. In special application scenarios, short-term support for the power grid is required, and higher charging and discharging power of the energy storage system is required. Therefore, considering the comprehensive cost and power, small-capacity batteries should be used as much as possible, but higher charging and discharging rates should be achieved.

[0004] Usually, the existing high-voltage cascade system can only quickly output a discharge rate of 0.5C-1C, which cannot meet the needs of use at high rates. If the same charging and discharging power is to be achieved, a larger capacity battery must be used. Summary of the invention

[0005] In order to solve the above problems, this paper proposes a high-voltage cascade energy storage cluster rack for use under high load. Several energy storage cluster racks are connected in series to form a high-voltage cascade. A battery pack, a battery connection box and a high-voltage control cabinet are arranged inside the shell of the energy storage cluster rack. The inside of the shell is vertically stacked from bottom to top with several battery packs, battery connection boxes and high-voltage control cabinets. The inner surfaces of both ends of the shell are close to the two ends of the battery pack. The four corners of the bottom surface of the shell are connected to the base frame through insulators. The length of the battery connection box and the length of the high-voltage control cabinet are both shorter than the length of the battery pack. The bottom of the battery pack is fixedly connected to the shell through a stacking bracket. A liquid cooling plate is arranged between the bottom surface of the battery pack and the top surface of the stacking bracket. The middle part of the base frame is horizontally provided with a liquid cooling circulation port and a temperature sensor. Detection cable, the liquid cooling circulation port is connected to the liquid cooling plate and the high-voltage control cabinet and the liquid cooling plate through the battery liquid cooling pipe and the control cabinet liquid cooling pipe respectively, the temperature sensing detection cable is connected to a number of battery packs in turn, and a number of heat dissipation mesh plates are provided on the surfaces of both ends of the shell. By reducing the original large-volume and large-capacity energy storage cluster frame, a number of energy storage cluster frames are used for series connection, so that efficient and high-voltage discharge can be achieved in a short time, and liquid cooling is performed not only on the battery pack but also on the high-voltage control cabinet inside each cluster frame, so that the temperature of the energy storage cluster frame can operate normally during high-voltage output, and the insulator is arranged at the bottom of the shell to ensure the safe insulation of the entire cluster frame under high voltage conditions, so as to achieve high-voltage joint energy storage output under high load.

[0006] The outer shell is in the shape of a vertical rectangular shell, and the inner front and rear surfaces of the outer shell are symmetrically provided with assembly ribs. The outer shell is fixedly connected to the stacking bracket through the assembly ribs, and installation cabinet doors are provided on both ends of the outer shell. The bottom surface of the outer shell is connected to the insulator through a vertical support of the foot. The bottom surface of the outer shell is penetrated by a temperature sensing cable, a battery liquid cooling pipe and a control cabinet liquid cooling pipe. Through the reduced outer shell, it is convenient to combine and install several energy storage cluster racks in series, and the direct connection of the outer shell to the stacking bracket can also ensure the strength of the overall outer shell and the assembly stability of the internal battery pack, control cabinet, etc.

[0007] The chassis is a frame-assembled chassis, and insulators are vertically arranged at the four corners of the upper surface of the chassis. A liquid cooling circulation port and a temperature sensing cable are fixedly arranged in the middle of the chassis through a bracket. The temperature sensing cable is connected to the temperature sensing detector, and the temperature sensing detector is fixedly arranged on the upper surface of the chassis. Insulators are arranged at the bottom of the shell to support it upright, thereby protecting the entire box shell under high voltage conditions and preventing excessive voltage from causing damage to the installed bottom surface.

[0008] The stacking bracket is an angle iron combination assembly bracket. The four corners of the stacking bracket are fixedly connected to the inner side of the outer shell. The top two layers of the stacking brackets are respectively provided with a battery connection box and a high-voltage control cabinet from bottom to top. The upper surface of the stacking bracket for installing the battery pack is embedded with a flat and fixed liquid cooling plate. The stacking brackets are used to stack various components in sequence, thereby maximizing the compression of the overall volume and improving the overall installation strength.

[0009] The liquid cooling plate is in the shape of a rectangular plate, which is embedded in the upper surface of the stacking bracket. A circulation interface is vertically arranged on the surface of one end of the liquid cooling plate. The liquid cooling plate is connected to the battery liquid cooling pipe through the circulation interface. The battery pack is in the shape of a rectangular flat plate. The wiring terminals of the battery pack are flush with the wiring terminals of the battery connection box and the high-voltage control cabinet. The other smooth end of the battery pack faces the circulation interface of the liquid cooling plate. By using the liquid cooling plate, each battery pack can be independently liquid-cooled and dissipated. In addition, the outer shell surface of the two ends of the liquid cooling plate is also provided with a heat dissipation mesh groove, so that the liquid cooling plate can be cooled by convection.

[0010] The high-voltage control cabinet is in the shape of a rectangular cabinet. The wiring terminals of the high-voltage control cabinet are connected to the battery junction box and the battery pack through wires. A circulating cooling interface is provided on the wiring terminal surface of the high-voltage control cabinet. The high-voltage control cabinet is connected to the control cabinet liquid cooling pipe through the circulating cooling interface. The high-voltage control cabinet is actively liquid-cooled to achieve the storage cluster rack. During the use of the control cabinet, the stability of the control cabinet is guaranteed during the high-voltage output process.

[0011] Beneficial effects:

[0012] By reducing the original large-volume and large-capacity energy storage cluster rack, a number of energy storage cluster racks are used to connect in series, so that efficient and high-voltage discharge can be achieved in a short time. In addition, liquid cooling is performed not only for the battery pack but also for the high-voltage control cabinet inside each cluster rack, so that the temperature of the energy storage cluster rack can operate normally during high-voltage output. Insulators are set at the bottom of the shell to ensure the safe insulation of the entire cluster rack under high voltage conditions, so that high-voltage joint energy storage output can be achieved under high load.

[0013] The reduced shell makes it easier to install several energy storage cluster racks in series. The shell is directly connected to the stacking bracket to ensure the strength of the entire shell and the assembly stability of the internal battery pack, control cabinet, etc.

[0014] By setting insulators at the bottom of the shell to support it upright, the entire box shell can be protected under high voltage conditions to prevent breakdown caused by excessive voltage.

[0015] By stacking the various components in sequence through stacking brackets, the overall volume can be compressed to the maximum extent and the overall installation strength can be improved.

[0016] Each battery pack is independently cooled by using a liquid cooling plate, and the outer shell surface at both ends of the liquid cooling plate is also provided with a heat dissipation mesh groove, so that the liquid cooling plate can be cooled by convection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the interior of a high-voltage cascade energy storage cluster frame used under high load;

[0018] Figure 2 It is an internal elevation view of a high-voltage cascade energy storage cluster frame used under high load;

[0019] Figure 3 It is a schematic diagram of the left side of the internal device of a high-voltage cascade energy storage cluster frame used under high load;

[0020] Figure 4 It is a schematic diagram of the right side of the internal device of a high-voltage cascade energy storage cluster frame used under high load;

[0021] In the figure; 1. chassis, 2. insulator, 3. shell, 4. liquid cooling circulation port, 5. temperature sensing cable, 6. battery liquid cooling pipe, 7. control cabinet liquid cooling pipe, 8. stacking bracket, 9. battery pack, 10. battery connection box, 11. high-voltage control cabinet, 12. liquid cooling plate. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0023] Base frame 1, insulator 2, shell 3, liquid cooling circulation port 4, temperature sensing cable 5, battery liquid cooling pipe 6, control cabinet liquid cooling pipe 7, stacking bracket 8, battery pack 9, battery connection box 10, high-voltage control cabinet 11, liquid cooling plate 12.

[0024] like Figure 1 , 2 , 3, 4 as shown;

[0025] A high-voltage cascade energy storage cluster frame for use under high load, wherein a plurality of energy storage cluster frames are connected in series with each other, a battery pack 9, a battery connection box 10 and a high-voltage control cabinet 11 are arranged inside a shell 3 of the energy storage cluster frame, a plurality of battery packs 9, a battery connection box 10 and a high-voltage control cabinet 11 are arranged in a vertically stacked manner from bottom to top inside the shell 3, the inner side surfaces of both ends of the shell 3 are close to and adjacent to the two ends of the battery pack 9, the bottom surface of the shell 3 is connected to the base frame 1 through insulators 2 at the four corners, the length of the battery connection box 10 and the length of the high-voltage control cabinet 11 are both shorter than the length of the battery pack 9, the bottom of the battery pack 9 is fixedly connected to the shell 3 through a stacking bracket 8, and a liquid is arranged between the bottom surface of the battery pack 9 and the top surface of the stacking bracket 8 Cold plate 12, the middle part of the base frame 1 is horizontally provided with a liquid cooling circulation port 4 and a temperature sensing detection cable 5, the liquid cooling circulation port 4 is connected to the liquid cooling plate 12 and the high-voltage control cabinet 11 and the liquid cooling plate 12 respectively through the battery liquid cooling pipe 6 and the control cabinet liquid cooling pipe 7, the temperature sensing detection cable 5 is connected to a number of battery packs 9 in turn, and the surfaces of both ends of the shell 3 are provided with a number of heat dissipation mesh plates, the shape of the shell 3 is a vertical rectangular shell, and the inner front and rear side surfaces of the shell 3 are symmetrically provided with assembly ribs, the shell 3 is fixedly connected to the stacking bracket 8 through the assembly ribs, and the left and right ends of the shell 3 are provided with installation cabinet doors, the bottom surface of the shell 3 is connected to the insulator 2 through a foot vertical support, and the bottom surface of the shell 3 is penetrated by The temperature sensing detection cable 5, the battery liquid cooling pipe 6 and the control cabinet liquid cooling pipe 7, the chassis 1 is a frame assembly chassis 1, the upper surface of the chassis 1 is vertically provided with insulators 2 at the four corners, the middle part of the chassis 1 is fixed with a liquid cooling circulation port 4 and a temperature sensing detection cable 5 through a bracket, the temperature sensing detection cable 5 is connected to the temperature sensing detector, and the temperature sensing detector is fixedly arranged on the upper surface of the chassis 1. The stacking bracket 8 is an angle iron combination assembly bracket, and the four corners of the stacking bracket 8 are fixedly connected to the inner side of the shell 3. The top two layers of the stacking bracket 8 are respectively provided with a battery connection box 10 and a high-voltage control cabinet 11 from bottom to top, and the upper surface of the stacking bracket 8 for installing the battery pack 9 is embedded and fixed with a liquid cooling plate 12, and the liquid cooling plate 1 2 is in the shape of a rectangular plate, a liquid cooling plate 12 is embedded in the upper surface of the stacking bracket 8, a circulation interface is vertically provided on one end surface of the liquid cooling plate 12, the liquid cooling plate 12 is connected to the battery liquid cooling pipe 6 through the circulation interface, the battery pack 9 is in the shape of a rectangular flat type, the connection terminal of the battery pack 9 is flush with the connection terminal of the battery connection box 10 and the high-voltage control cabinet 11, the other smooth end of the battery pack 9 faces the circulation interface of the liquid cooling plate 12, the high-voltage control cabinet 11 is in the shape of a rectangular cabinet, the connection terminal of the high-voltage control cabinet 11 is connected and controlled with the battery connection box and the battery pack 9 through a wire, a circulation cooling interface is provided on the connection terminal surface of the high-voltage control cabinet 11, and the high-voltage control cabinet 11 is connected to the control cabinet liquid cooling pipe 7 through the circulation cooling interface.

[0026] Implementation examples;

[0027] Before the energy storage cluster rack is used, it is first connected in series with several cluster racks and then connected to the power grid. When the load pressure of the power grid is too large, the energy storage cluster rack is started to output high voltage. During the output, the battery liquid cooling pipe 6 and the control cabinet liquid cooling pipe 7 are used to efficiently cool the battery pack 9 and the high-voltage control cabinet 11, respectively, so as to ensure that the cluster rack can output high voltage stably and efficiently, and can achieve a fast output discharge rate of 6C.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-voltage cascade energy storage cluster rack for use under high load, wherein a battery pack, a battery connection box and a high-voltage control cabinet are arranged inside the shell of the energy storage cluster rack, characterized in that: The several energy storage cluster racks are connected in series with each other, and the interior of the shell is vertically stacked with several battery packs, battery connection boxes and high-voltage control cabinets from bottom to top. The inner surfaces of the two ends of the shell are close to the two ends of the battery pack, and the four corners of the bottom surface of the shell are connected to the base frame through insulators. The length of the battery connection box and the length of the high-voltage control cabinet are both shorter than the length of the battery pack. The bottom of the battery pack is fixedly connected to the shell through a stacking bracket, and a liquid cooling plate is provided between the bottom surface of the battery pack and the top surface of the stacking bracket. A liquid cooling circulation port and a temperature sensing detection cable are horizontally provided in the middle of the base frame. The liquid cooling circulation port is connected to the liquid cooling plate, the high-voltage control cabinet and the liquid cooling plate respectively through the battery liquid cooling pipe and the control cabinet liquid cooling pipe. The temperature sensing detection cable is connected to the several battery packs in turn, and the surfaces of the two ends of the shell are provided with several heat dissipation mesh panels.

2. The high-voltage cascade energy storage cluster frame for use under high load according to claim 1, characterized in that: The shell is in the shape of a vertical rectangular shell, and the inner front and rear surfaces of the shell are symmetrically provided with assembly ribs. The shell is fixedly connected to the stacking bracket through the assembly ribs. The left and right ends of the shell are provided with installation cabinet doors. The bottom surface of the shell is connected to the insulator through a vertical support of a foot. The bottom surface of the shell is penetrated by a temperature sensing cable, a battery liquid cooling pipe and a control cabinet liquid cooling pipe.

3. The high-voltage cascade energy storage cluster frame for use under high load according to claim 1, characterized in that: The base frame is a frame-assembled base frame, and insulators are vertically arranged at the four corners of the upper surface of the base frame. A liquid cooling circulation port and a temperature detection cable are fixedly arranged in the middle of the base frame through a bracket. The temperature detection cable is connected to the temperature detector, and the temperature detector is fixedly arranged on the upper surface of the base frame.

4. The high-voltage cascade energy storage cluster frame for use under high load according to claim 1, characterized in that: The stacking bracket is an angle iron type combined assembly bracket. The four corners of the stacking bracket are fixedly connected to the inner side of the outer shell. The top two layers of the stacking bracket are respectively provided with a battery connection box and a high-voltage control cabinet from bottom to top. The upper surface of the stacking bracket for installing the battery pack is embedded with a flat and fixed liquid cooling plate.

5. The high-voltage cascade energy storage cluster frame for use under high load according to claim 1, characterized in that: The liquid cooling plate is in the shape of a rectangular plate, and is embedded in the upper surface of the stacking bracket. A circulation interface is vertically provided on one end surface of the liquid cooling plate, and the liquid cooling plate is connected to the battery liquid cooling pipe through the circulation interface.

6. The high-voltage cascade energy storage cluster frame for use under high load according to claim 5, characterized in that: The battery pack is in a rectangular flat shape, the connection terminal of the battery pack is flush with the connection terminal of the battery connection box and the high-voltage control cabinet, and the other smooth end of the battery pack faces the circulation interface of the liquid cooling plate.

7. The high-voltage cascade energy storage cluster frame for use under high load according to claim 1, characterized in that: The high-voltage control cabinet is in the shape of a rectangular cabinet. The wiring terminals of the high-voltage control cabinet are connected and controlled with the battery junction box and the battery pack through wires. A circulating cooling interface is provided on the surface of the wiring terminals of the high-voltage control cabinet, and the high-voltage control cabinet is connected to the control cabinet liquid cooling pipe through the circulating cooling interface.

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