Pack-free simple energy storage box

Abstract

The utility model provides a pack-free simple energy storage box, belongs to the technical field of energy storage battery packs, and is used for solving the problem that a battery cell is extremely inconvenient to replace when an energy storage box fails or the performance is reduced in the prior art. The utility model provides a pack-free simple energy storage box. The pack-free simple energy storage box comprises a shell and a battery pack located in the shell. The battery pack comprises battery cells and a bracket frame; the battery cells are square, one side of each battery cell is provided with a positive and negative wiring terminal, the side is the head end of each battery cell, and the plurality of battery cells are linearly arranged in the support frame at intervals in an array manner; the support frame comprises a back support, upper supports and lower supports, the back support is located at the tail ends of the battery cells and covers all the battery cells, the upper supports and the lower supports are also arranged in an array mode, the upper supports and the lower supports limit the battery cells through two-side bends, and the bends are located at intervals of the battery cell array; and the battery cell can be pulled out from the bracket frame along the head end of the battery cell. And the maintenance convenience of the energy storage box and the replacement efficiency of the battery cells are remarkably improved by realizing the detachable installation of the battery cells.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage battery packs, in particular to a pack-free simple energy storage box. Background Art

[0002] In the current field of battery energy storage, especially for devices and systems that require long-term stable power supply, energy storage boxes are key energy storage units, and their convenience in design, manufacturing and maintenance is crucial to improving the reliability and operating efficiency of the overall system. However, existing energy storage box designs generally have some limitations, especially in terms of maintenance and replacement of battery cells.

[0003] Specifically, existing energy storage boxes usually adopt a fixed installation method in which the battery cells cannot be disassembled, that is, the battery cells are directly welded or fixed in the shell by other non-detachable methods. Although this design method ensures the structural strength and sealing of the energy storage box to a certain extent, it also greatly limits the maintenance and replacement of the battery cells. Once the battery cell needs to be replaced due to performance degradation or failure, it is often necessary to disassemble the entire energy storage box or even replace the entire energy storage box, which undoubtedly increases the complexity and cost of maintenance, and also affects the normal operation of the system. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a pack-free simple energy storage box, which is used to solve the problem in the prior art that it is extremely inconvenient to replace battery cells when the energy storage box fails or the performance deteriorates.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a pack-free simple energy storage box, comprising a shell and a battery pack located in the shell;

[0006] The battery pack includes a battery cell and a support frame;

[0007] The battery cell is in a square shape, and one side of the battery cell is provided with positive and negative electrode terminals, which is the head end of the battery cell. A plurality of the battery cells are arranged in a linearly spaced array in the support frame;

[0008] The support frame includes a back support, an upper support and a lower support, wherein the back support is located at the rear end of the battery cell and covers all the battery cells, and the upper support and the lower support are also arranged in an array, and the upper support and the lower support limit the battery cells by bending at both sides, and the bends are located at the intervals of the battery cell array;

[0009] The battery cell can be pulled out from the support frame along its head end.

[0010] Optionally, the shell plate on the side of the shell opposite to the head end of the battery cell is openably connected.

[0011] Optionally, one side edge of the shell plate is connected to the shell as a whole via a rotating hinge, and the other opposite side edge is connected to the shell as a whole via a detachable structure.

[0012] Optionally, the detachable structure includes bolts and screw holes;

[0013] Or the detachable structure is a magnetic structure.

[0014] Optionally, there are two battery packs, and the two battery packs are arranged back to back, the head ends of the battery cells in the two battery packs are facing outward, and the side shell plates corresponding to the head ends of the two battery packs are openably connected.

[0015] Optionally, an electrical component group is also included, the shell includes a first cavity and a second cavity, the first cavity accommodates the battery group, the electrical connection part of the electrical component group is located inside the second cavity, and the operating part is located outside the second cavity.

[0016] Optionally, the electrical component group includes a display screen and / or a circuit breaker.

[0017] Optionally, the top surface, the bottom surface, and the head end-facing surface of the first cavity are all provided with air-permeable mesh holes.

[0018] Optionally, countersunk holes are provided at four corners of the top shell of the first cavity, and a supporting surface is provided below the countersunk holes;

[0019] The four corners of the bottom shell of the first cavity are provided with foot posts, and the positions of the foot posts correspond to the countersunk holes.

[0020] Optionally, the foot column is installed on the bottom shell of the first cavity through a cushioning structure.

[0021] As described above, the pack-free simple energy storage box of the utility model has at least the following beneficial effects:

[0022] The pack-free simple energy storage box design proposed in this utility model significantly improves the maintenance convenience of the energy storage box and the efficiency of replacing the battery cells by realizing the detachable installation of the battery cells. This design not only reduces the maintenance cost, but also can quickly respond to the performance changes of a single battery cell, ensuring that the energy storage box can always use batteries in good condition, thereby maintaining the high performance and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is an overall schematic diagram of the utility model.

[0024] Figure 2 Shown is a schematic diagram of the interior of the utility model.

[0025] Figure 3Shown is a three-dimensional truncated schematic diagram of the support frame of the present invention.

[0026] Figure 4 Shown is a schematic diagram of the overall bottom of the utility model.

[0027] Figure 5 Shown is a schematic diagram of the utility model in the open state of the housing plate.

[0028] Among them: shell plate 10, rotating hinge 11, detachable structure 12, breathable mesh 13, countersunk hole 14, foot column 15, padding structure 16, battery cell 2, interval 201, pole piece 202, bracket frame 3, back bracket 30, upper bracket 31, lower bracket 32, bend 312, display screen 33, circuit breaker 34, limit plate 35. DETAILED DESCRIPTION

[0029] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] See also Figures 1 to 5 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0031] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0032] For this example, please refer to Figure 1-5 The embodiment of the pack-free simple energy storage box provided by the utility model includes a shell and a battery pack located in the shell, the battery pack includes a battery cell 2 and a bracket frame 3, and the bracket frame 3 is used to accommodate and install the battery cell 2.

[0033] The battery cell 2 is square in shape, and one side is provided with positive and negative terminal blocks, which is the head end of the battery cell 2. A plurality of battery cells 2 are arranged in a linear array in the support frame 3. Square battery cells usually use steel shells or aluminum shells as shells, which have the advantages of good heat dissipation, high packaging reliability, and long cycle life. Moreover, square battery cells have a natural advantage in grouping efficiency. The square shape of the square battery cell itself allows each battery cell to be arranged closely, effectively improving the space utilization of the battery pack, so the energy density is also higher, the structure is compact, and it is not easily damaged by external forces.

[0034] The bracket frame 3 includes a back bracket 30, an upper bracket 31 and a lower bracket 32. The back bracket 30 is located at the tail end of the battery cell 2 and covers all the battery cells 2. The upper bracket 31 and the lower bracket 32 ​​are also arranged in an array. The upper bracket 31 and the lower bracket 32 ​​limit the battery cells 2 by bending 312 on both sides. The bend 312 is located at the interval 201 of the battery cell 2 array; each group of upper brackets 31 and lower brackets 32 forms a battery cell working position, the back bracket 30 limits the tail end of the battery cell, the upper bracket 31 and the lower bracket 32 ​​limit the top and bottom of the battery cell, and at the same time, the bend 312 of the upper bracket 31 and the lower bracket 32 ​​limits the side of the battery cell, so that the battery cell can only be inserted or removed in one direction, that is, the battery cell 2 can only be pulled out from the bracket frame 3 along its own head end, or inserted into the battery cell working position of the bracket frame 3 along its own tail end.

[0035] After each battery cell working position is placed, the electrodes of the battery cells can be connected through the pole pieces 202, and the battery cells can be connected in series or in parallel to form a battery pack as needed.

[0036] In order to ensure that the battery cell is firmly fixed in the battery cell working position, a friction pad layer can also be set on the wall surface of the battery cell working position, so that when the battery cell is inserted, the battery cell can be automatically and firmly fixed in the battery cell working position; Figure 2 The limiting plate 35 shown is arranged at the head end of the battery cell. The limiting plate 35 is fixedly connected to the support frame 3 by bolts or other detachable structures and presses the battery cell in the working position of the battery cell. When a specific battery cell needs to be replaced, only the limiting plate 35 at the corresponding position needs to be removed, and the battery can be pulled out. After replacing the new battery, the limiting plate 35 is reinstalled and the battery cell is pressed.

[0037] The above-mentioned pack-free simple energy storage box has the characteristics of replaceable battery cells, and the replacement process is simple and efficient, and the overall structure is easy to maintain and install.

[0038] This embodiment can be found in Figure 5, on the shell, the shell plate 10 on the side opposite to the head end of the battery cell 2 is openably connected. In this embodiment, when the shell plate 10 is opened, it faces the working position of each battery cell, which facilitates the maintenance of internal components without disassembling the entire battery pack shell and internal frame. At the same time, energy storage battery boxes are often used in a stacked manner, for example, multiple batteries are stacked vertically. When a lower-level energy storage box fails, the shell plate 10 can be opened laterally to maintain a certain energy storage box in the lower layer without affecting the upper-level energy storage box, thereby simplifying the maintenance process and improving maintenance efficiency.

[0039] Furthermore, if Figure 5 and Figure 4 As shown, one side of the housing plate 10 is connected to the housing as a whole through a rotating hinge 11, and the other side opposite to the housing as a whole is connected to the housing as a whole through a detachable structure 12. When the housing plate 10 needs to be opened to maintain the inside of the battery pack, the connection of the detachable structure 12 is first disconnected, and then the housing plate 10 is rotated around the rotating hinge 11 to maintain the internal components.

[0040] Specifically, if Figure 5 As shown, the detachable structure 12 includes bolts and screw holes. When the maintenance is completed and the housing plate 10 needs to be closed, the housing plate 10 is placed close to the housing, holes are opened at corresponding positions, and bolts are screwed in to fix the housing plate 10 and the housing to form a closed state.

[0041] Or the detachable structure 12 is a magnetic structure, and a magnetic strip can be set on the shell plate 10. When the shell plate 10 is pushed up and contacts the shell as a whole, the shell plate 10 and the shell are automatically adsorbed and fixed to form a closed structure, which simplifies the disassembly process of the detachable structure 12 and further facilitates maintenance work.

[0042] This embodiment can be found in Figure 2 The battery packs are two groups, and the two groups of battery packs are arranged back to back, the head ends of the battery cells 2 in the two groups of battery packs are facing outward, and the side shell plates 10 corresponding to the head ends of the two groups of battery packs are openably connected. The method of this embodiment can not only increase the storage capacity of the pack-free simple energy storage box, but also ensure that each battery cell can be easily maintained without disassembling the shell or the bracket frame 3.

[0043] This embodiment can be found in Figure 5, also includes an electrical component group, the shell includes a first cavity and a second cavity, the first cavity accommodates the battery pack, the electrical connection part of the electrical component group is located inside the second cavity, and the operating part is located outside the second cavity, and the operating part refers to buttons, switches, touch screens, etc. Installing electrical components and battery cells in different cavities can effectively isolate heat conduction and physical contact between them. This can reduce the risk of damage to electrical components due to overheating or short circuit of the battery cells, thereby improving the safety of the entire lithium battery pack. If there is a problem with the electrical components or battery cells, installing them in different cavities can make maintenance and replacement easier.

[0044] Furthermore, the electrical component group includes a display screen 33 and / or a circuit breaker 34. The display screen is connected to the electrical signal of the battery management system, and can display information such as power. The circuit breaker is connected in series in the output power circuit. When the line is overloaded or short-circuited, or other situations require disconnection, the circuit breaker can cut off the line in the first time to prevent the occurrence and expansion of danger. The circuit breaker is set on the casing to facilitate the operation to restore the function of the energy storage box without disassembling the casing after handling the fault, or disconnecting the overloaded electrical equipment, or when the power needs to be turned on. A circuit breaker refers to a switching device that can close, carry and disconnect the current under normal circuit conditions and can close, carry and disconnect the current under abnormal circuit conditions within a specified time. The type of circuit breaker can be selected as needed. For example, an air switch is a commonly used circuit breaker.

[0045] In this embodiment, the top surface, bottom surface, and head end facing surface of the first cavity are all provided with air-permeable meshes 13. At the same time, the back support 30, the upper support 31, and the lower support 32 are all hollow structures. This facilitates the heat dissipation of the battery cell, and the heat of the battery cell can be quickly transferred to the outside of the shell through airflow exchange, thereby improving the performance and safety of the battery cell.

[0046] This embodiment can be found in Figure 4 and Figure 5 The top shell of the first cavity is provided with countersunk holes 14 at the four corners, and a support surface is provided below the countersunk holes 14; the bottom shell of the first cavity is provided with foot posts 15 at the four corners, and the positions of the foot posts 15 correspond to the countersunk holes 14. Through the cooperation of the countersunk holes 14 and the foot posts 15, multiple pack-free simple energy storage boxes can be stacked vertically for use. And because the countersunk holes 14 limit the position of the foot posts 15, the stacking structure is more stable, it is not easy to find slippage, and the safety is improved.

[0047] Furthermore, the foot column 15 is installed on the bottom shell of the first cavity through a cushioning structure 16. The cushioning structure 16 can be a sheet metal bending part, and its function is that when multiple pack-free simple energy storage boxes can be stacked vertically for use, the upper top surface and the lower bottom surface of the upper and lower adjacent pack-free simple energy storage boxes are not in contact with each other, and the middle height is the height of the cushioning structure 16. The cushioning structure 16 can increase the contact area during stacking to prevent the foot column 15 from being subjected to excessive local force, and can also form a space between two pack-free simple energy storage boxes, so that the pack-free simple energy storage boxes can exchange heat from the air-permeable mesh 13 of the shell.

[0048] In summary, the utility model effectively overcomes various shortcomings in the prior art, can produce beneficial technical effects, and has significant progress.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A pack-free simple energy storage box, comprising a housing and a battery pack located in the housing, characterized in that: The battery pack comprises a battery cell (2) and a support frame (3); The battery cell (2) is in a square shape, and one side of the battery cell is provided with positive and negative electrode terminals, and the side is the head end of the battery cell (2). A plurality of the battery cells (2) are arranged in a linearly spaced array in the support frame (3); The support frame (3) comprises a back support (30), an upper support (31) and a lower support (32); the back support (30) is located at the rear end of the battery cell (2) and covers all the battery cells (2); the upper support (31) and the lower support (32) are also arranged in an array; the upper support (31) and the lower support (32) limit the battery cells (2) by means of bends (312) on both sides; the bends (312) are located at intervals (201) of the battery cell (2) array; The battery core (2) can be pulled out from the support frame (3) along its head end.

2. The pack-free simple energy storage box according to claim 1, characterized in that: On the housing, the housing plate (10) on the side opposite to the head end of the battery core (2) is openably connected.

3. The pack-free simple energy storage box according to claim 2, characterized in that: One side of the shell plate (10) is connected to the shell as a whole via a rotating hinge (11), and the other side opposite to the shell plate (10) is connected to the shell as a whole via a detachable structure (12).

4. The pack-free simple energy storage box according to claim 3, characterized in that: The detachable structure (12) comprises bolts and screw holes; Or the detachable structure (12) is a magnetic attraction structure.

5. The pack-free simple energy storage box according to claim 1, characterized in that: There are two battery packs, and the two battery packs are arranged back to back, the head ends of the cells (2) in the two battery packs are both facing outwards, and the side shell plates (10) corresponding to the head ends of the two battery packs are both openably connected.

6. The pack-free simple energy storage box according to claim 1, characterized in that: It also includes an electrical component group, the shell includes a first cavity and a second cavity, the first cavity accommodates the battery group, the electrical connection part of the electrical component group is located inside the second cavity, and the operation part is located outside the second cavity.

7. The pack-free simple energy storage box according to claim 6, characterized in that: The electrical component group includes a display screen (33) and / or a circuit breaker (34).

8. The pack-free simple energy storage box according to claim 6, characterized in that: The top surface, the bottom surface, and the head end-facing surface of the first cavity are all provided with air-permeable mesh holes (13).

9. The pack-free simple energy storage box according to claim 8, characterized in that: Countersunk holes (14) are provided at the four corners of the top shell of the first cavity, and a supporting surface is provided below the countersunk holes (14); Four corners of the bottom shell of the first cavity are provided with foot columns (15), and the positions of the foot columns (15) correspond to the countersunk holes (14).

10. The pack-free simple energy storage box according to claim 9, characterized in that: The foot column (15) is installed on the bottom shell of the first cavity via a cushioning structure (16).

Images