A compact energy storage battery pack

Abstract

The utility model provides a compact structure's energy storage battery package, including box and a plurality of battery module, the top of box opening installs sealing cover, sealing cover with the box forms the inner chamber, a plurality of battery module installs in the inner chamber, there is the gap between the both ends of battery module and the inner wall of box, the width of gap is the minimum width of satisfying electrical safety performance. The battery module in compact structure's energy storage battery package can install in smaller space, the size of battery package box is smaller, effectively promotes the energy density of battery package whole, when adopting the submerging type scheme, the submerging liquid required by compact structure's energy storage battery package is less, and the cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and more precisely to a compact energy storage battery pack. Background Technology

[0002] With the continuous development of new energy technologies such as photovoltaic power generation and wind power generation, higher requirements are being placed on the energy density and operating costs of power storage systems due to their power generation characteristics. Power storage systems generally use energy storage battery packs to achieve energy storage functions. The energy storage battery pack consists of a casing and battery modules, with several battery modules installed inside the casing and encapsulated with the casing to form the energy storage battery pack.

[0003] like Figure 1 As shown, the existing battery module 2A has lifting holes 22A on its end plates at both ends. When installing and moving the battery module 2A, lifting hooks 3A are inserted into the lifting holes 22A from both ends of the battery module 2A. The lifting hooks 3A are then manually or by pulling to lift the battery module 2A, completing the subsequent moving, positioning, and installation operations to install the battery module 2A inside the housing. The existing lifting method for the battery module 2A requires a large space between the battery module 2A and the inner wall of the housing for the insertion and removal of the lifting hooks 3A. Consequently, the housing is longer in the insertion direction of the lifting hooks 3A, resulting in a longer overall battery pack length and lower overall energy density. For the immersion cooling system, the housing contains the immersion fluid used to immerse the battery module 2A. The reserved space inside the housing leads to the capacity for more immersion fluid, which is not necessary for heat dissipation, thus increasing the amount of immersion fluid used and raising cooling costs.

[0004] In summary, there is a need in the field for an energy storage battery pack with a more compact structure that does not affect the installation of battery modules, so as to improve energy density and reduce costs without affecting installation. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a compact energy storage battery pack. By improving the structure of the battery module hook hole and hook, the battery module can be installed in a smaller space, thereby allowing for the use of a smaller housing.

[0006] To achieve the above objectives, this utility model provides a compact energy storage battery pack, including a housing and several battery modules. A sealing cover is installed on the top of the opening of the housing, and the sealing cover and the housing form an inner cavity. Several battery modules are installed inside the inner cavity, and there is a gap between the two ends of the battery modules and the inner wall of the housing. The width of the gap is the minimum width required to meet electrical safety performance.

[0007] Preferably, end plates are respectively installed at both ends of the battery module, and the side of the end plate has a set of hook holes. The hook holes are located on the upper side of both ends of the end plate, and the hooks are inserted into the hook holes from the top of the end plate.

[0008] Preferably, the end plate has through mounting holes at both ends, and the top side of the mounting through holes has hook holes that penetrate the mounting end plate.

[0009] Preferably, the upper part of the hook hole that mates with the mounting through hole has a protrusion.

[0010] Preferably, the hook includes two hook rods, the bottom end of which has an upwardly bent flange structure, which is inserted into the hook hole and engages with the protrusion.

[0011] Preferably, four battery modules are installed in the housing.

[0012] Preferably, the battery module is a 1P13S battery module.

[0013] Compared with the prior art, the advantages of the compact energy storage battery pack disclosed in this utility model are: the battery modules in the compact energy storage battery pack can be installed in a smaller space, the size of the battery pack box is smaller, and the overall energy density of the battery pack is effectively improved; when using the immersion scheme, the compact energy storage battery pack requires less immersion liquid and has a lower cost. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] like Figure 1 The diagram shows a schematic of the combination of battery module and hoisting hook in the prior art.

[0016] like Figure 2 The diagram shown is a structural schematic of a compact energy storage battery pack according to this application.

[0017] like Figure 3 The figure shown is a front cross-sectional view of a compact energy storage battery pack according to this application.

[0018] like Figure 4 The diagram shown is a structural schematic of a battery module of a compact energy storage battery pack according to this application.

[0019] like Figure 5 The diagram shown is a structural schematic of the end plate of the battery module.

[0020] like Figure 6 The image shown is a cross-sectional view of the end plate of the battery module.

[0021] like Figure 7 The diagram shown is a structural schematic of a compact energy storage battery pack according to this application, in which the battery module and hook are combined.

[0022] like Figure 8 The diagram shown is a partial structural schematic of the hook.

[0023] like Figure 9 The image shown is a cross-sectional view before the hook is inserted into the end plate.

[0024] like Figure 10 The image shown is a cross-sectional view of the hook inserted into the end plate through the mounting hole.

[0025] like Figure 11 The image shown is a cross-sectional view of the hook flange structure when inserted into the hook hole.

[0026] like Figure 12 The image shown is a cross-sectional view of the hook being engaged with the hook hole.

[0027] like Figure 13 The image shown is a cross-sectional view of the battery module being lifted to the top of the housing by the hook.

[0028] like Figure 14 The image shown is a cross-sectional view of the battery module placed inside the housing.

[0029] like Figure 15 The image shown is a cross-sectional view of the hook when it is separated from the battery module. Detailed Implementation

[0030] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figure 2 and Figure 3As shown, this application discloses a compact energy storage battery pack comprising a housing 1 and several battery modules 2. A sealing cover 11 is installed on the top of the opening of the housing 1, forming an inner cavity 10 with the sealing cover 11 and the housing 1. The battery modules 2 are installed inside the inner cavity 10, and a gap 101 exists between the two ends of the battery modules 2 and the inner wall of the housing 1. The width of the gap 101 is the minimum width required to meet electrical safety performance. Compared with existing energy storage battery packs, the gap 101 of this application is significantly reduced, occupying less internal space, resulting in a more compact internal structure and a higher overall energy density. When using an immersion method, the compact energy storage battery pack requires less immersion fluid, leading to lower costs.

[0032] Four battery modules 2 are preferably installed in the housing 1. Taking the battery module 2 as a 1P13S battery module as an example, the front and rear end plates of the battery module and the battery pack housing only retain the minimum clearance to meet electrical safety performance. No more internal space is required. In the immersion battery pack solution, the effective volume of the internal space of the battery pack housing is smaller, which can save about 6L of immersion coolant and greatly reduce the immersion coolant usage cost of a single battery pack.

[0033] See Figure 4 The battery module 2 has end plates 21 installed at both ends. The side of the end plate 21 has a set of hook holes 22. The hook holes 22 are located on the upper side of both ends of the end plate 21. The hooks are inserted into the hook holes 22 from the top of the end plate 21 to realize the lifting and installation operation of the battery module 2.

[0034] See Figure 5 and Figure 6 The end plate 21 has through mounting holes 210 at both ends, and the top side of the mounting holes 210 has hook holes 22 that penetrate the mounting end plate 21. The upper part of the hook holes 22 that mates with the mounting holes 210 has a protrusion 221. It is worth noting that the mounting bolts are used to fix the battery module 2 through the mounting holes 210.

[0035] See Figure 7 and Figure 8 The hook 3 is inserted into the mounting through hole 210 and then into the hook hole 22 through the mounting through hole 210. This design effectively reduces the space requirements at both ends of the battery module 2 when installing and removing the hook 3, which helps to reduce the volume of the housing 1 during the design process. The hook 3 includes two hook rods 31, and the bottom end of the hook rod 31 has an upwardly bent flange structure 32. The flange structure 32 is inserted into the hook hole 22 and engages with the protrusion 221, which can prevent the hook 3 from coming off when moving the battery module 2, thereby increasing the stability and safety of use.

[0036] See Figures 9 to 12When moving the battery module 2, first insert the hook 3 downward into the mounting through hole 210 until the flange structure 32 is aligned with the hook hole 22. Then move the hook 3 horizontally so that the flange structure 32 is inserted into the hook hole 22. Finally, pull the hook 3 upward. At this time, the flange structure 32 engages with the protrusion 221, and the hook 3 can lift and move the battery module 2.

[0037] See Figures 13 to 15 The battery module 2 is moved to the top of the box 1 by using the hook 3, and then placed in the box 1 manually or mechanically. Finally, the hook 3 is separated from the battery module 2 and removed, and the battery module 2 is connected to the box 1 by bolts.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A compact energy storage battery pack, characterized in that, The device includes a housing and several battery modules. A sealing cover is installed on the top of the opening of the housing. The sealing cover and the housing form an inner cavity. Several battery modules are installed inside the inner cavity. There is a gap between the two ends of the battery modules and the inner wall of the housing. The width of the gap is the minimum width required to meet electrical safety performance.

2. The compact energy storage battery pack as described in claim 1, characterized in that, End plates are respectively installed at both ends of the battery module. The side of the end plate has a set of hook holes. The hook holes are located on the upper side of both ends of the end plate. The hooks are inserted into the hook holes from the top of the end plate.

3. The compact energy storage battery pack as described in claim 2, characterized in that, The end plate has through mounting holes at both ends, and the top side of each through mounting hole has a hook hole that penetrates the mounting end plate.

4. The compact energy storage battery pack as described in claim 3, characterized in that, The upper part of the hook hole that aligns with the mounting through hole has a protrusion.

5. The compact energy storage battery pack as described in claim 4, characterized in that, The hook includes two hook rods, the bottom end of which has an upwardly bent flange structure that is inserted into the hook hole and engages with the protrusion.

6. The compact energy storage battery pack as described in claim 1, characterized in that, The battery modules are installed in the housing.

7. The compact energy storage battery pack as described in claim 1, characterized in that, The battery module is a 1P13S battery module.

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