A rack-mounted energy storage power supply

Abstract

The utility model belongs to the technical field of energy storage power supply, concretely is a rack energy storage power supply, including shell, electric core module, cooling fan, series connection interface and wiring terminal, and the bottom box opening end edge has the docking groove, the cover plate edge is embedded in the docking groove and the outer surface is flush with the bottom box, the bottom box side wall is equipped with hole, the hole edge is equipped with the inlayed edge groove, the ventilation board can be disassembled and assembled in the inlayed edge groove, the bottom box is assembled with the electric core module that a plurality of electric cores are formed, the electric core module top is equipped with the U type protection board, and one side of the protection board that is attached to the electric core is equipped with the hollow thin pipe, and the adjacent electric core is also equipped with the isolation mechanism, and it includes two baffle plates that can be relatively close or far away, the baffle plate four corners are equipped with the guide piece, the baffle plate is opened in the installation groove and the heat dissipation air duct, the movable rod is installed in the installation groove, the movable rod is opened in the through -hole that cooperates with the heat dissipation air duct, and the two baffle plates opposite faces are equipped with the linkage rod, and the abutting surface has the arc chamfer, the utility model discloses the structure is convenient for maintaining, heat dissipation and electric core protection, and the use reliability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage power technology, specifically a rack-mounted energy storage power supply. Background Technology

[0002] Rack-mounted energy storage power supplies are energy storage devices adapted for standard rack installation and are widely used in data centers, communication base stations, industrial control and other scenarios. They are characterized by high integration, can utilize rack space, are easy to integrate with existing power supply systems, support flexible expansion, can adjust energy storage capacity according to needs, and are adapted to industrial-grade operating environments, with stable and reliable power supply guarantee capabilities.

[0003] Current energy storage power supplies suffer from the following drawbacks: The ventilation sections on the side walls of the base box are often integrally molded with the base box shell and cannot be disassembled separately. In outdoor microgrid energy storage stations and industrial / commercial energy storage applications where ventilation channels require regular cleaning, dust and sand easily accumulate in the ventilation grilles after prolonged use. However, because the ventilation structure is integrated with the shell, cleaning requires disassembling the entire fixed structure of the base box side wall first, making it impossible to operate the ventilation section separately. This not only wastes time but also poses a risk of collision or displacement to the battery cell modules, terminals, and other components inside the base box during disassembly. Furthermore, in industrial / commercial energy storage scenarios, existing power supplies often use rigid isolation plates to fix the spacing between adjacent battery cells. When the battery cells are fast-charged for extended periods, the electrode material expands, and the rigid isolation plate cannot deform, resulting in hard contact with the battery cell side wall, squeezing the battery cell shell and causing bulges or even cracks. Therefore, a rack-mounted energy storage power supply is proposed to address these issues. Utility Model Content

[0004] To address the shortcomings of existing energy storage power sources, a rack-mounted energy storage power source is proposed.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The rack energy storage power supply of this utility model includes a shell, a cell module, a cooling fan, a series interface, and wiring terminals. The shell includes a bottom box and a removable cover plate. The side wall of the bottom box is provided with a removable ventilation plate. The cell module is assembled inside the bottom box. The cell module is composed of several individual cells. A protection plate is provided on the cell module.

[0006] Preferably, the protection plate has a U-shaped structure and is located at the top of the battery cell module.

[0007] Preferably, a hollow thin tube is provided on the contact surface between the protection plate and the individual battery cell.

[0008] Preferably, the bottom box sidewall has a hole, and the edge of the hole is integrally formed with an embedded side groove by stamping, and the ventilation plate is detachably assembled in the embedded side groove.

[0009] Preferably, foam is provided between the contact surface of the battery cell module and the bottom box.

[0010] Preferably, foam is provided between two adjacent battery cells.

[0011] Preferably, the opening edge of the bottom box is formed into a mating groove by stamping, and when the cover plate is assembled with the bottom box, its edge is embedded in the mating groove, and the outer surface of the cover plate is flush with the outer surface of the bottom box.

[0012] Preferably, an isolation mechanism is provided between two adjacent battery cells. The isolation mechanism includes a first partition and a second partition that can be relatively close to or far apart. Guide members are provided at the four corners of the opposite surfaces of the two partitions. The guide members include a piston shell located on the first partition and a piston rod movably inserted into the piston shell. One end of the piston rod is connected to one side of the second partition.

[0013] Preferably, the first partition has a mounting groove for assembling the movable rod, a heat dissipation duct is formed on the side wall of the first partition, and a through hole is formed on the movable rod to cooperate with the heat dissipation duct. A spring is connected between the bottom end of the movable rod and the mounting groove. A linkage rod is provided on the opposite surfaces of the first and second partitions. The linkage rod on the first partition passes through the second partition and abuts against the top end of the movable rod inside it. The linkage rod on the second partition passes through the first partition and abuts against the top end of the movable rod inside it. The first and second partitions have the same structural configuration. Preferably, the contact surfaces of the movable rod and the linkage rod are both provided with arc-shaped chamfers.

[0014] The beneficial effects of this utility model are: This utility model provides a rack-mounted energy storage power supply. Through structural design, the isolation mechanism between adjacent individual cells can not only buffer the expansion of the cells and avoid the risk of cell breakage and leakage caused by hard contact, but also rely on elastic reset to ensure that the partition is always in close contact with the side wall of the individual cells, thereby improving heat transfer efficiency. Through the linkage structure of the first and second partitions with the movable rod, linkage rod, and heat dissipation duct, the heat dissipation duct can be opened and closed adaptively. This prevents cold air from continuously entering through the duct when the battery cell contracts or is operating under low load, which would cause the battery cell temperature to drop too low, destroying its optimal electrochemical working environment and reducing charging and discharging efficiency. In particular, in low-temperature scenarios, this may lead to a decrease in electrolyte activity and an increase in internal resistance. The expansion phenomenon of the battery cell during fast charging and high-load operation is essentially a process of electrode material volume change accompanied by the generation of a large amount of heat. At this time, the battery cell temperature rises rapidly. The heat dissipation duct can be automatically opened and closed according to the expansion and contraction of the battery cell body, achieving on-demand heat dissipation without the need for an additional power source. This suppresses the high-temperature decay of the battery cell body. Combined with the main air duct formed between the first and second partitions, and the cooling fan, a composite heat dissipation structure of main air duct and auxiliary air duct is formed, which greatly improves the heat dissipation performance. The detachable connection between the ventilation plate and the embedded side groove, and the cover plate and the bottom box simplifies the inspection and maintenance of the battery module and the cleaning of the ventilation plate, reducing maintenance costs. The overall structure takes into account safety, heat dissipation efficiency and practicality. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the shell disassembled according to Embodiment 1; Figure 2 This is a magnified view of the protective plate disassembled in the bottom box of Embodiment 1; Figure 3 This is a three-dimensional view of the assembled structure of Example 1; Figure 4 This is a structural plan view of the battery cell module and foam in Embodiment 1; Figure 5 This is a structural diagram and a partial enlarged view of the individual battery cell and isolation mechanism in Embodiment 2; Figure 6 This is a three-dimensional sectional view of the isolation mechanism in Embodiment 2; Legend: 01. Series interface; 02. Terminal block; 1. Housing; 101. Base box; 102. Cover plate; 103. Ventilation plate; 104. Hole; 105. Embedded side groove; 106. Connecting groove; 2. Battery cell module; 201. Individual battery cell; 3. Cooling fan; 4. Protection board; 5. Hollow thin through tube; 6. Foam; 7. Isolation mechanism; 701. First partition; 702. Second partition; 703. Main air duct; 8. Guide component; 801. Piston housing; 802. Piston rod; 9. Movable rod; 10. Mounting groove; 11. Cooling air duct; 12. Through hole; 13. Spring; 14. Linkage rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Specific implementation examples are given below.

[0018] Example 1: Please see Figures 1-4The present invention discloses a rack-mounted energy storage power supply, comprising a housing 1, a battery cell module 2, a cooling fan 3, a series interface 01, and a terminal block 02. The housing 1 includes a base box 101 and a removable cover plate 102. A removable ventilation plate 103 is provided on the side wall of the base box 101. The battery cell module 2 is assembled inside the base box 101 and comprises several individual battery cells 201. A protective plate 4 is provided on the battery cell module 2. The protective plate 4 has a U-shaped structure and is located at the top of the battery cell module 2. A perforated surface is provided on the protective plate 4 that is in contact with the individual battery cells 201. The hollow thin tube 5 has a hole 104 on the side wall of the bottom box 101. The edge of the hole 104 is integrally formed with an embedded side groove 105 by stamping. The ventilation plate 103 is detachably assembled in the embedded side groove 105. During operation, in the assembly stage, several individual battery cells 201 are first combined into a battery cell module 2, and the whole module is installed into the bottom box 101 through a fixing bracket. Then, the U-shaped protective plate 4 is fastened to the top of the battery cell module 2, so that the protective plate 4 fits against the individual battery cell 201. One side of the hollow thin tube 5 directly contacts the surface of the battery cell. Then, the ventilation plate 103 is assembled into the bottom box along the embedded side groove 105. At the hole 104 on the side wall of 101, the cover plate 102 is finally closed to complete the seal. According to the capacity requirements, multiple power supplies can be connected in series through the series interface 01, and external loads or charging equipment can be connected through the wiring terminal 02. During operation, the heat generated by the individual battery cell 201 is partly conducted to the surface of the protection board 4 for passive heat dissipation through the hollow thin tube 5, and partly driven by the cooling fan 3, the airflow enters the bottom box 101 from the ventilation plate 103, passes through the internal space and carries away the heat of the battery cell module 2, forming an active heat dissipation cycle. During maintenance, the cover plate 102 can be directly removed to inspect the battery cell module 2, or the heat can be removed from the embedded side groove. The ventilation plate 103 can be removed for cleaning, making the operation convenient. Through the structural design of the present invention, the detachable design of the bottom box 101 and the cover plate 102, the ventilation plate 103 and the embedded side groove 105 facilitates the maintenance of the battery cell module 2 and the cleaning of the ventilation plate 103, reducing maintenance costs. The composite heat dissipation mode of passive heat conduction by the hollow thin tube 5 and active airflow by the cooling fan 3, combined with the airflow channel of the hole 104, suppresses the high temperature of the individual battery cell 201. The U-shaped protection plate 4 covers the top of the battery cell module 2 to prevent foreign object impact and dust accumulation. The hollow thin tube 5 takes into account both heat conduction and buffering, reducing the risk of damage to the individual battery cell 201.

[0019] Furthermore, foam 6 is provided between the contact surfaces of the battery module 2 and the bottom box 101, and foam 6 is provided between two adjacent battery cells 201. During operation, the power supply will generate external impact during transportation (bumping), handling (collision), or operation (vibration). If the battery module 2 and the bottom box 101 are in rigid contact, the impact force will be directly transmitted to the battery module 2, which may cause deformation of the outer shell of the battery cell 201. If adjacent battery cells 201 are in rigid contact, the expansion, contraction, or external vibration of the battery cells 201 during operation will cause collisions between the battery cells 201. The foam 6 located on the contact surface between the battery module 2 and the bottom box 101 first bears the external impact and disperses the force through elastic compression, reducing the impact force transmitted to the battery module 2. The foam 6 located between adjacent battery cells 201 can absorb the mutual squeezing force when the battery cells expand, and at the same time isolate the battery cells 201 during vibration to avoid rigid collisions.

[0020] Furthermore, the opening edge of the bottom box 101 is stamped to form a mating groove 106. When the cover plate 102 is assembled with the bottom box 101, its edge is embedded in the mating groove 106, and the outer surface of the cover plate 102 is flush with the outer surface of the bottom box 101. During operation, the operator only needs to align the edge of the cover plate 102 with the groove of the mating groove 106 to insert it smoothly, avoiding misalignment caused by manual assembly deviation. The groove depth of the mating groove 106 matches the edge thickness of the cover plate 102, ensuring that the outer surfaces of the two are flush after assembly, without any protrusions or depressions. The flush outer surface can also avoid bumps caused by protrusions on the edge of the cover plate 102, such as scratches to personnel or snagging during handling.

[0021] Example 2: Please see Figure 5 , Figure 6Based on the above structure, the foam 6 between the individual battery cells 201 is replaced with an isolation mechanism 7. Furthermore, an isolation mechanism 7 is provided between two adjacent individual battery cells 201. The isolation mechanism 7 includes a first partition 701 and a second partition 702 that can be relatively close to or far apart. Guide members 8 are provided at the four corners of the opposite surfaces between the two. The guide member 8 includes a piston shell 801 located on the first partition 701 and a piston rod 802 movably inserted into the piston shell 801. One end of the piston rod 802 is connected to one side of the second partition 702. During operation, the individual battery cells 201 will expand due to the volume change of the electrode material during charging and discharging. Or it can contract. When adjacent cell 201 expands, it will push the first partition 701 and the second partition 702 closer to each other. At this time, the piston rod 802 in the guide 8 is inserted into the piston shell 801 to guide the movement trajectory of the first partition 701 and the second partition 702. The guide 8 is arranged at the four corners to ensure that the two partitions are subjected to uniform force. Through the above structure, the expansion of the cell 201 during the cycle can be absorbed, the compressive stress on the cell 201 can be reduced, and the risk of cell 201 cracking and leakage caused by hard contact can be prevented. The heat is discharged by the cooling fan 3 through the air duct between the two, which effectively suppresses the high temperature decay of the cell 201 and extends the cycle life.

[0022] Furthermore, the first partition 701 has a mounting groove 10 for assembling the movable rod 9, and a heat dissipation duct 11 is formed on the side wall of the first partition 701. The movable rod 9 has a through hole 12 that mates with the heat dissipation duct 11. A spring 13 is connected between the bottom end of the movable rod 9 and the mounting groove 10. Linkage rods 14 are provided on opposite surfaces of the first partition 701 and the second partition 702. The linkage rod 14 on the first partition 701 passes through the second partition 702 and abuts against the top end of the movable rod 9 inside it. The linkage rod 14 on the second partition 702 passes through the first partition 701 and abuts against the top end of the movable rod 9 inside it. The movable rod 9 and the linkage rod 14... Both contact surfaces are provided with arc-shaped chamfers. The first partition 701 and the second partition 702 have the same structural configuration. During operation, since the first partition 701 and the second partition 702 have the same structure, taking the expansion process of the individual battery cell 201 as an example, when the individual battery cell 201 expands and pushes the two partitions closer together, the linkage rod 14 on the first partition 701 applies downward pressure to the movable rod 9 in the second partition 702. At the same time, the linkage rod 14 on the second partition 702 also applies pressure to the movable rod 9 in the first partition 701. The movable rod 9 moves down along the mounting groove 10 and compresses the spring 13. The through hole 12 on the movable rod 9 gradually aligns with the heat dissipation duct 11. When the individual battery cell 201 expands, the through hole 12 aligns with the heat dissipation duct. When the 11-cell overlap, the air duct is opened, forming the main air duct 703 between the first partition 701 and the second partition 702. This, combined with the cooling fan 3, forms a composite cooling structure of the main air duct 703 and the auxiliary air duct 11, significantly improving heat dissipation performance. Furthermore, the expansion of the individual battery cell 201 causes the first partition 701 and the second partition 702 to move closer together, reducing the size of the main air duct 703 and decreasing the airflow. The opening of the aforementioned cooling duct 11 compensates for this, ensuring efficient heat dissipation. When the individual battery cell 201 contracts, the pressure on the two partitions decreases, and the spring 13 pushes the movable rod 9 upwards, causing the through hole 12 to close in a misaligned manner with the cooling duct 11, preventing excessive heat loss at low temperatures. The arc of the movable rod 9 and the linkage rod 14... The chamfered edges smoothly convert horizontal thrust into vertical pressure, reducing friction and jamming. Simultaneously, when the individual cell 201 contracts, for example, the potential energy released by the spring 13 in the first partition 701 pushes the movable rod 9 upwards. At the same time, the movable rod 9 pushes the linkage rod 14 on the second partition 702, causing the second partition 702 to move away from the first partition 701 and re-adhere to the surface of the adjacent individual cell 201. This allows the heat generated by the individual cell 201 during operation to be quickly and fully transferred to the first partition 701 or the second partition 702. Through the coordination of the above structures, when the individual cell 201 expands, the heat generated increases, opening the heat dissipation duct 11 and improving heat dissipation efficiency, achieving on-demand heat dissipation. This process requires no power source.

[0023] The mounting grooves 10, movable rods 9, and linkage rods 14 respectively provided on the first partition 701 and the second partition 702 are staggered to ensure that the first partition 701 and the second partition 702 can move normally without obstruction. The mounting slot 10 is equipped with a plug.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A rack-mounted energy storage power supply, comprising a housing (1), a battery cell module (2), a cooling fan (3), a series interface (01), and wiring terminals (02), characterized in that: The outer casing (1) includes a bottom box (101) and a removable cover plate (102). The side wall of the bottom box (101) is provided with a removable ventilation plate (103). The battery cell module (2) is assembled inside the bottom box (101). The battery cell module (2) is composed of several individual battery cells (201). The battery cell module (2) is provided with a protective plate (4).

2. The rack-mounted energy storage power supply according to claim 1, characterized in that: The protection plate (4) has a U-shaped structure and is located at the top of the battery cell module (2).

3. The rack-mounted energy storage power supply according to claim 1, characterized in that: A hollow thin tube (5) is provided on the contact surface of the protection plate (4) and the individual battery cell (201).

4. The rack-mounted energy storage power supply according to claim 1, characterized in that: The bottom box (101) has a hole (104) on its side wall. The edge of the hole (104) is integrally formed with an embedded side groove (105) by stamping. The ventilation plate (103) is detachably assembled in the embedded side groove (105).

5. The rack-mounted energy storage power supply according to claim 1, characterized in that: Foam (6) is provided between the contact surface of the battery cell module (2) and the bottom box (101).

6. The rack-mounted energy storage power supply according to claim 1, characterized in that: Foam (6) is provided between two adjacent battery cells (201).

7. The rack-mounted energy storage power supply according to claim 1, characterized in that: The opening edge of the bottom box (101) is formed by stamping to form a mating groove (106). When the cover plate (102) is assembled with the bottom box (101), its edge is embedded in the mating groove (106), and the outer surface of the cover plate (102) is flush with the outer surface of the bottom box (101).

8. The rack-mounted energy storage power supply according to claim 1, characterized in that: An isolation mechanism (7) is provided between two adjacent battery cells (201). The isolation mechanism (7) includes a first partition (701) and a second partition (702) that can be relatively close to or far away from each other. Guide members (8) are provided at the four corners of the opposite sides of the two. The guide member (8) includes a piston housing (801) located on the first partition (701) and a piston rod (802) that is movably inserted into the piston housing (801). One end of the piston rod (802) is connected to one side of the second partition (702).

9. A rack-mounted energy storage power supply according to claim 8, characterized in that: The first partition (701) has an installation groove (10) for assembling the movable rod (9). The side wall of the first partition (701) has a heat dissipation duct (11). The movable rod (9) has a through hole (12) that cooperates with the heat dissipation duct (11). A spring (13) is connected between the bottom end of the movable rod (9) and the installation groove (10). A linkage rod (14) is provided on the opposite surfaces of the first partition (701) and the second partition (702). The linkage rod (14) on the first partition (701) passes through the second partition (702) and abuts against the top of the movable rod (9) inside it. The linkage rod (14) on the second partition (702) passes through the first partition (701) and abuts against the top of the movable rod (9) inside it. The structure of the first partition (701) and the second partition (702) is the same.

10. A rack-mounted energy storage power supply according to claim 9, characterized in that: The contact surfaces of the movable rod (9) and the linkage rod (14) are both provided with arc-shaped chamfers.

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