Energy storage battery box

Abstract

The application discloses a kind of energy storage battery boxes, which comprises: battery pack, comprising a plurality of sequentially stacked batteries;Box is internally provided with containing cavity, the containing cavity is suitable for placing the battery pack;Along the stacking direction of the battery, one side of the box is provided with an open mouth, and the open mouth is communicated with the containing cavity;Compression assembly is suitable for closing the open mouth;The compression assembly is detachably connected with the edge of the open mouth.Such arrangement, in the process of fixing the compression assembly in the open mouth, the battery pack can be extruded.When the compression assembly completely closes the open mouth, the compression assembly can also simultaneously compress and fasten a plurality of sequentially stacked batteries.Further, without additional clamping device or fixing device is used to fix the individual battery unit and energy storage battery box, the installation process of energy storage battery box is simplified.

Description

Technical Field

[0001] This invention relates to the field of battery module technology, and more specifically to an energy storage battery box. Background Technology

[0002] Currently, energy storage batteries in energy storage boxes are typically configured in two ways: with battery modules and without battery modules. When the energy storage battery is configured as a battery module, since the battery module is already fixed inside, in actual use, the battery module only needs to be directly fixed to the energy storage battery box.

[0003] However, when using a battery-less module setup, since the individual battery units are not fixed together, after directly installing multiple individual battery units into the energy storage battery box, additional clamping or fixing devices are needed to fix the individual battery units to the energy storage battery box, making the installation process of the energy storage battery box more complicated. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the installation process of the energy storage battery box is relatively cumbersome when the battery module-less setting method is used in the prior art, and thus provides an energy storage battery box.

[0005] To achieve the above objectives, embodiments of the present invention provide an energy storage battery box, which includes: a battery pack comprising a plurality of batteries stacked sequentially; a box body having an internal receiving cavity adapted to hold the battery pack; an opening on one side of the box body along the stacking direction of the batteries, the opening communicating with the receiving cavity; and a compression assembly adapted to close the opening; the compression assembly being detachably connected to the edge of the opening.

[0006] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0007] 1. An embodiment of the present invention provides an energy storage battery box, which includes: a battery pack including a plurality of batteries stacked sequentially; a box body having an internal receiving cavity adapted to hold the battery pack; an opening on one side of the box body along the stacking direction of the batteries, the opening communicating with the receiving cavity; a compression assembly adapted to close the opening; the compression assembly being detachably connected to the edge of the opening.

[0008] This configuration allows the battery pack to be compressed while the compression assembly is secured to the opening. Even when the compression assembly completely closes the opening, it can simultaneously compress and secure multiple stacked batteries. This eliminates the need for additional clamping or securing devices to individual battery cells and the energy storage battery box, simplifying the installation process. Attached Figure Description

[0009] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0010] Figure 1 This is a perspective view of the compression component and battery according to an embodiment of the present invention;

[0011] Figure 2 This is a schematic diagram of the overall energy storage battery box according to an embodiment of the present invention;

[0012] Figure 3 This is a schematic diagram showing the end plate not being fixed in place according to an embodiment of the present invention;

[0013] Figure 4 This is a schematic diagram showing the end plate fixed in place according to an embodiment of the present invention.

[0014] Figure label:

[0015] 1. Compression plate; 2. End plate; 3. Battery; 4. Connecting part; 5. Box body; 6. Divider plate; 7. Buffer component; 8. Step structure; 9. Bolt. Detailed Implementation

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

[0017] In the description of this invention, it should be noted that 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 limitations on 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.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] Currently, energy storage batteries in energy storage boxes are typically configured using either battery modules or without modules. When using battery modules, the modules are already fixed in place, so in actual use, simply attaching them directly to the energy storage box is sufficient. However, with a module-less configuration, since the individual battery cells are not secured together, additional clamping or fixing devices are needed to secure each cell to the energy storage box after installing multiple individual cells, making the installation process more cumbersome.

[0021] Therefore, the technical problem to be solved by the present invention is that the installation process of the energy storage battery box is relatively cumbersome when the battery module-less setting method is used in the prior art, and thus provides an energy storage battery box.

[0022] Example 1

[0023] like Figures 1 to 4 As shown, an embodiment of the present invention provides an energy storage battery box, which includes a battery pack, a box body 5, and a compression assembly.

[0024] Specifically, in this embodiment of the invention, the battery pack includes a plurality of batteries 3 stacked sequentially. A housing 5 has an internal cavity adapted to hold the battery pack. Along the stacking direction of the batteries 3, one side of the housing 5 has an opening communicating with the cavity. A compression assembly is adapted to close the opening, and the compression assembly is detachably connected to the edge of the opening.

[0025] With this configuration, when actually closing the opening, the battery pack is first placed into the receiving cavity, and then the compression assembly is moved to the opening position to close it. The compression assembly can then be fixed to the opening, allowing it to compress the battery pack. When the compression assembly completely closes the opening, it can also simultaneously compress and secure multiple sequentially stacked batteries 3. This eliminates the need for additional clamping or fixing devices to secure individual battery units to the energy storage battery box, simplifying the installation process.

[0026] In the actual sealing process, various sealing methods can be used. For example, the compression assembly can be directly fixed to the opening, and then the compression assembly and the opening can be secured together. That is to say, when the compression assembly can be embedded in the opening, the edge of the opening and the compression assembly can be nailed together along the battery stacking direction using screws.

[0027] As another sealing method, when the area of ​​the compression assembly is larger than the area of ​​the opening, making it impossible for the compression assembly to be inserted into the opening, the compression assembly can be nailed to the edge of the opening with screws along the direction of battery stacking. During the fixing process, the distance between the compression assembly and the opening decreases, while the compression assembly compresses the battery pack along the direction of battery stacking until the compression assembly completely seals the opening.

[0028] Of course, other methods can be used to nail the compression assembly to the opening edge with screws. This embodiment is just an example and is not limited thereto. Any method that can achieve the same technical effect is acceptable.

[0029] Furthermore, in an optional embodiment of the present invention, a buffer 7 is placed between two adjacent batteries 3. The buffer 7 can be made of silicone or rubber; of course, to improve the heat dissipation performance of the battery 3, a buffer 7 with mesh openings can be used. Those skilled in the art can configure it according to actual conditions. This embodiment is merely illustrative and not limiting; it is sufficient to achieve the same technical effect. When a buffer 7 is provided, during the compression process, the displacement of the compression assembly is equal to the compression amount of all the buffer 7.

[0030] Further, in an optional embodiment of the invention, the compression assembly includes an end plate 2 and a compression plate 1. Specifically, the end plate 2 is adapted to close the opening, and the compression plate 1 is disposed on the side of the end plate 2 near the battery pack. Figure 2 As shown, in the direction perpendicular to the stacking direction, the length of the compression plate 1 is less than the length of the end plate 2, and the edge of the compression plate 1 and the edge of the end plate 2 are set as a stepped structure 8.

[0031] In this embodiment of the invention, there are two ways to fix the compression component and the opening. The first way is that the edge of the end plate 2 is detachably connected to the edge of the opening, that is, the end plate 2 is directly connected to the outer frame of the box body 5.

[0032] The second fixing method is as follows: the receiving cavity is provided with a connecting part 4 near the opening, and the connecting part 4 is adapted to be embedded in the step of the stepped structure 8. The connecting part 4 is detachably connected to the end plate 2. In this embodiment of the invention, by providing the connecting part 4, when fully compressed, the connecting part 4 will be embedded in the step of the stepped structure 8. At this time, it can prevent the compression assembly from compressing the battery 3, thus avoiding damage to the battery 3 caused by the compression assembly continuing to compress, and providing a certain degree of protection for the battery 3.

[0033] In this embodiment of the invention, by setting a stepped structure 8, a compression position for the battery pack can be provided. Because the area of ​​the end plate 2 is smaller than the area of ​​the compression plate 1 after setting the stepped structure 8, this configuration prevents the contact area between the end batteries and the metal parts from becoming too large, i.e., prevents the contact area between the end batteries and the compression plate 1 from becoming too large. After contacting the end plate 2, the contact area with the compression plate 1 is reduced, thereby preventing the end batteries from dissipating heat too quickly and improving the thermal balance performance of the battery pack.

[0034] Of course, those skilled in the art can choose one of the fixing methods to fix the opening of the compression component and the box according to the actual situation, or they can choose two fixing methods at the same time, as long as they can achieve the same technical effect.

[0035] Furthermore, in an optional embodiment of the present invention, the thickness of the connecting portion 4 is less than the thickness of the compression plate 1 along the stacking direction. By ensuring that the thickness of the connecting portion 4 is less than the thickness of the compression plate 1, the overall compression amount of the battery pack can be determined by the thickness of the connecting portion 4, the thickness of the compression plate 1, and the distance between the connecting portion 4 and the outermost battery 3 when uncompressed. This allows technicians to control the overall compression amount of the battery pack according to actual conditions.

[0036] Furthermore, in an optional embodiment of the present invention, the stepped structure 8 is fixed to the housing 5 by the fixing component. By fixing the stepped structure 8 to the housing 5 by the fixing component, the overall compression of the battery pack can also be adjusted. When technicians find that the compression of the battery pack is too large during compression, the fixing component can be adjusted to loosen the connection between the compression component and the housing 5, thereby reducing the compression of the battery pack and ensuring its normal operation. When technicians find that the compression of the battery pack is too small during compression, the fixing component can be adjusted to tighten the connection between the compression component and the housing 5, thereby increasing the compression of the battery pack and ensuring its stability.

[0037] Furthermore, in an optional embodiment of the present invention, the stepped structure 8 is fixed to the connecting portion 4 of the housing 5 by the fixing component. By fixing the stepped structure 8 to the connecting portion 4 of the housing 5 by the fixing component, the present invention avoids opening holes or installing parts on the outside of the housing 5, thus ensuring the integrity and neatness of the outside of the housing 5.

[0038] Specifically, the fixing component may include a screw hole and a bolt 9. The screw hole is simultaneously formed on the housing 5, the connecting part 4, and the stepped structure 8, and the bolt 9 is adapted to be inserted into the screw hole. Of course, the screw hole may also be formed only on the housing 5 and the stepped structure 8, or on the connecting part 4 and the stepped structure 8. By setting the fixing component as a screw hole and a bolt 9, the overall compression of the battery pack can be slightly adjusted through the screw hole and bolt 9, so that the battery pack can maintain maximum stability while ensuring that the battery pack is in normal working condition.

[0039] Of course, this embodiment is merely an example of the type of fixed component, but it does not limit the scope of the invention. Those skilled in the art can change the type of fixed component according to the actual situation, as long as the same technical effect can be achieved.

[0040] Optionally, a single partition plate 6 is provided inside the housing 5, and the housing 5 surrounds the partition plate 6 to form the receiving cavity. Optionally, multiple partition plates 6 are provided inside the housing 5, and the receiving cavity is formed between two adjacent partition plates 6 and between the partition plate 6 and the housing 5. By providing partition plates 6, this embodiment of the invention can not only organize the receiving cavity, but also increase the heat dissipation of the battery 3 in adjacent receiving cavities, ensuring the normal operation of the battery 3.

[0041] Furthermore, in an optional embodiment of the present invention, the compression assembly has a clearance groove on its end face near the battery pack, the clearance groove being suitable for insertion of the separator plate 6. By providing the clearance groove, this embodiment of the present invention allows the separator plate 6 to be directly inserted into the clearance groove during the compression of the battery pack, preventing conflict between the compression assembly and the separator plate 6 during compression. Furthermore, it also prevents the compression assembly from deforming the middle of the separator plate 6 and damaging the battery under overpressure conditions. This arrangement allows the separator plate 6 to deform at its end, that is, the portion of the separator plate 6 within the clearance groove, to deform. The clearance groove absorbs the volume change caused by the partial deformation of the separator plate 6, ensuring normal battery operation.

[0042] This invention also provides a method for fastening an energy storage battery box, specifically including the following steps:

[0043] S1. First, stack multiple batteries 3 into a group along the extension direction of the partition plate 6, with at least one buffer pad between adjacent batteries 3;

[0044] S2. Position the compression plate 1 toward the battery 3 and the end plate 2 outward, and fix the stepped structure 8 to the housing 5 with bolts 9. When the stepped structure 8 is fully in contact with the connecting part 4, the battery group 3 is tightened.

[0045] With this configuration, after placing the buffer 7 between two adjacent batteries 3, external force can be applied directly to the compression assembly along the stacking direction, thereby compressing the battery pack. When the compression assembly completely closes the opening, it can also simultaneously compress and secure multiple sequentially stacked batteries 3. This eliminates the need for additional clamping or fixing devices to secure individual battery units 3 to the energy storage battery box, simplifying the installation process of the energy storage battery box.

[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An energy storage battery box, characterized in that, include: A battery pack, comprising multiple batteries stacked sequentially (3); The housing (5) has an internal cavity for placing the battery pack; along the stacking direction of the batteries (3), one side of the housing (5) has an opening that communicates with the cavity. A compression assembly adapted to close the opening; the compression assembly is detachably connected to the edge of the opening via a fixing assembly, and at least one side of the compression assembly is in close contact with the battery pack; The compression component includes: End plate (2), adapted to close the opening; A compression plate (1) is disposed on the side of the end plate (2) near the battery pack; in the direction perpendicular to the stacking direction, the length of the compression plate (1) is less than the length of the end plate (2), and the edge of the compression plate (1) and the edge of the end plate (2) are configured as a stepped structure (8). The edge of the end plate (2) is detachably connected to the edge of the opening; the housing is provided with a connecting part (4) near the opening, the connecting part (4) is adapted to be embedded in the step of the stepped structure (8); the connecting part (4) is detachably connected to the end plate (2); when fully compressed, the connecting part (4) will be embedded in the step of the stepped structure (8), which can prevent the compression assembly from compressing the battery (3); Along the stacking direction, the thickness of the connecting part (4) is less than the thickness of the compression plate (1); the overall compression amount of the battery pack is determined by the thickness of the connecting part (4), the thickness of the compression plate (1), and the distance between the connecting part (4) and the outermost battery (3) when not compressed.

2. The energy storage battery box according to claim 1, characterized in that, The compression assembly is fixed in the same direction as the battery stacking direction when it is secured to the opening.

3. The energy storage battery box according to claim 1 or 2, characterized in that, A buffer (7) is placed between two adjacent batteries (3).

4. The energy storage battery box according to claim 1 or 2, characterized in that, The stepped structure (8) is fixed to the box (5) by the fixing component.

5. The energy storage battery box according to claim 4, characterized in that, The stepped structure (8) is fixed to the connecting part (4) of the box body (5) by the fixing component.

6. The energy storage battery box according to claim 5, characterized in that, The fixing component includes: Screw holes are simultaneously formed on the housing (5) and / or the connecting part (4), as well as on the stepped structure (8); Bolt (9) is adapted to be inserted into the screw hole.

7. The energy storage battery box according to claim 1 or 2, characterized in that, The box (5) is provided with a single partition (6) inside, and the partition (6) and the box (5) surround to form the receiving cavity; Alternatively, the interior of the housing (5) is provided with a plurality of partitions (6), and the receiving cavity is formed between two adjacent partitions (6) and between the partitions (6) and the housing (5).

8. The energy storage battery box according to claim 7, characterized in that, The compression assembly has a clearance groove on the end face near the battery pack, the clearance groove being suitable for the insertion of the separator plate (6).

Images