Steel-belt-free energy storage battery module

Abstract

The utility model provides a non-steel belt type energy storage battery module which comprises an aluminum plate assembly, two groups of mutually separated battery cabins are arranged on the aluminum plate assembly, the aluminum plate assembly comprises an upper aluminum plate, a T-shaped aluminum plate, a lower aluminum plate and a side aluminum plate, the middle section of the side aluminum plate is connected to a web plate of the T-shaped aluminum plate, the side aluminum plate and the T-shaped aluminum plate form an H-shaped structure, and the lower aluminum plate is connected with the T-shaped aluminum plate. The upper aluminum plate and the lower aluminum plate are connected to the side aluminum plates and the T-shaped aluminum plates to form a double-layer bin body. And the battery units are respectively arranged in the bin body. The side aluminum plates and the T-shaped aluminum plates form the bin body with the H-shaped structure, the upper layer and the lower layer in the bin body form the battery bin, and the upper aluminum plate and the lower aluminum plate respectively seal the top surface and the bottom surface of the bin body, so that the structural strength of the battery module is improved, the reliability of the battery module in the use process is improved, and the service life of the battery module is prolonged. And the aluminum plate structure can more easily conduct heat of the battery cell to the outer shell, so that the heat dissipation performance is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery module technology, and in particular relates to a steel strip-less energy storage battery module. Background Technology

[0002] A lithium-ion battery pack, also known as a battery module, is a manufacturing process for lithium-ion batteries. It refers to the packaging, encapsulation, and assembly of multiple individual lithium-ion cells connected in parallel or series, taking into account system mechanical strength, thermal management, and BMS matching. Key technologies lie in overall structural design, welding and processing control, protection levels, and active thermal management systems. Simply connecting two batteries in series or parallel to form a specific shape according to customer requirements is called a pack.

[0003] In an energy storage battery module, multiple cells are arranged in a row and covered by two 20mm wide steel strips. The steel strips provide initial preload and fix the cells, facilitating later assembly into a PACK. However, the steel strip structure lacks stability and reliability, and is prone to breakage during use, causing the battery module to fall apart. The simple steel strip structure cannot withstand heat transfer, resulting in poor overall heat dissipation performance of the battery module. Utility Model Content

[0004] This utility model provides a steel strip-less energy storage battery module, which aims to solve the problems of insufficient stability and reliability of the current steel strip structure, which is prone to breakage during use, causing the battery module to fall apart, and the poor heat dissipation performance of the battery module due to the inability of the steel strip structure to conduct heat.

[0005] This utility model is implemented as follows: a steel strip-less energy storage battery module, comprising:

[0006] An aluminum plate assembly is provided with two sets of mutually separated battery compartments. The aluminum plate assembly includes an upper aluminum plate, a T-shaped aluminum plate, a lower aluminum plate, and a side aluminum plate. The middle section of the side aluminum plate is connected to the web of the T-shaped aluminum plate. The side aluminum plate and the T-shaped aluminum plate form an H-shaped structure. The upper aluminum plate and the lower aluminum plate are connected to the side aluminum plate and the T-shaped aluminum plate to form a double-layer compartment.

[0007] Battery units, which are arranged inside the compartment.

[0008] Preferably, the internal part of the compartment consists of two layers, upper and lower, forming a battery compartment.

[0009] Preferably, the battery cell includes three sets of battery cells, and the battery cell is arranged in different battery compartments.

[0010] Preferably, the upper aluminum plate is provided with a limiting groove on the connecting end face of the T-shaped aluminum plate and the side aluminum plate; the T-shaped aluminum plate and the side aluminum plate are provided with limiting rails adapted to the limiting groove.

[0011] During assembly, after the limiting slide rail and the limiting slide groove are engaged and connected, the upper aluminum plate is then connected to the T-shaped aluminum plate and the side aluminum plate by bolts.

[0012] Preferably, the lower aluminum plate is provided with a limiting slide groove on the end face connecting the T-shaped aluminum plate and the side aluminum plate, and the T-shaped aluminum plate and the side aluminum plate are provided with a limiting slide rail on the end face of the upper aluminum plate.

[0013] During assembly, the lower aluminum plate is connected to the T-shaped aluminum plate and the side aluminum plate by bolts, and is located away from the end face of the upper aluminum plate. The limiting slide rail is engaged with the limiting slide groove.

[0014] Preferably, the web of the T-shaped aluminum plate is provided with a limiting end away from the flange end, and the middle section of the side aluminum plate is provided with a limiting end groove, and the limiting end and the limiting end groove are adapted to each other;

[0015] During the self-connection process, the limiting end and the limiting end slot are engaged, and the side aluminum plate and the web of the T-shaped aluminum plate are connected by bolts.

[0016] Preferably, the limiting end has a trapezoidal structure.

[0017] Preferably, the inner walls of the upper and lower aluminum plates are provided with thermally conductive silicone pads, and the upper and lower aluminum plates are respectively connected to the battery unit through the thermally conductive silicone pads.

[0018] Preferably, the end face of the battery unit that contacts and connects with the T-shaped aluminum plate and the side aluminum plate is also provided with a PC sheet.

[0019] Preferably, the battery cell is further provided with a separator, which is disposed between adjacent battery cell assemblies.

[0020] Compared with the prior art, the embodiments of this application have the following main advantages:

[0021] 1. The steel-strip-less energy storage battery module provided by this utility model forms an H-shaped compartment with the side aluminum plate and T-shaped aluminum plate. The inner part of the compartment consists of two layers forming a battery compartment. The upper aluminum plate and the lower aluminum plate respectively seal the top and bottom surfaces of the compartment, which improves the structural strength of the battery module, increases the reliability of the battery module during use, and avoids the occurrence of equipment disintegration.

[0022] 2. The steel-strip-less energy storage battery module provided by this utility model achieves snap-fit ​​connection through the aluminum plate assembly using the tenon structure principle, which further improves the structural stability of the aluminum plate assembly, meets the requirements of high-density and high-load cell assembly for the support structure, and avoids the battery unit from falling apart during use due to simple connection structure.

[0023] 3. The combination of aluminum plate structure and thermally conductive silicone pad in the steel strip-free energy storage battery module provided by this utility model can conduct the heat of the battery cell to the outer casing, greatly improving the heat dissipation performance and reducing the need for heat dissipation equipment. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of a steel strip-less energy storage battery module provided by this utility model.

[0025] Figure 2 This is a schematic diagram of the aluminum plate assembly structure of a steel strip-free energy storage battery module provided by this utility model.

[0026] Figure 3 This is a schematic diagram of the battery compartment structure of a steel strip-less energy storage battery module provided by this utility model.

[0027] Figure 4 This is a schematic diagram of the structure of the thermally conductive silicone pad in a steel-belt-less energy storage battery module provided by this utility model.

[0028] Figure 5 This is a schematic diagram of the limiting slide groove and limiting slide rail structure of a steel strip-free energy storage battery module provided by this utility model.

[0029] Figure 6 This is a schematic diagram of the limiting end and limiting end groove structure of a steel strip-free energy storage battery module provided by this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Aluminum plate assembly; 110. Upper aluminum plate; 120. T-shaped aluminum plate; 121. Limiting slide rail; 130. Lower aluminum plate; 140. Side aluminum plate; 151. Limiting slide groove; 152. Limiting slide rail; 153. Limiting end; 154. Limiting end groove;

[0032] 20. Battery cell assembly; 30. PC sheet; 40. Thermal conductive silicone pad. Detailed Implementation

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] This utility model embodiment provides a steel strip-less energy storage battery module, such as Figures 1-6 As shown, the steel-belt-less energy storage battery module includes:

[0036] An aluminum plate assembly 10 is provided with two sets of mutually separated battery compartments. The aluminum plate assembly 10 includes an upper aluminum plate 110, a T-shaped aluminum plate 120, a lower aluminum plate 130, and a side aluminum plate 140. The middle section of the side aluminum plate 140 is connected to the web of the T-shaped aluminum plate 120. The side aluminum plate 140 and the T-shaped aluminum plate 120 form an H-shaped compartment. The inner part of the compartment consists of two upper and lower layers that constitute the battery compartment. The upper aluminum plate 110 and the lower aluminum plate 130 respectively close the top and bottom surfaces of the compartment.

[0037] The number of battery cell assemblies 20 is six, and three sets of each battery cell are placed in different battery compartments. The battery cell assemblies 20 in the battery cell are separated by a separator, which is composed of PU foam and aerogel. The battery cell assembly 20 is a lithium battery cell module in the prior art, and the different battery cell assemblies 20 in the battery cell are connected to each other.

[0038] The inner walls of the upper aluminum plate 110 and the lower aluminum plate 130 are provided with thermally conductive silicone pads 40, and the upper aluminum plate 110 and the lower aluminum plate 130 are respectively connected to the battery unit through the thermally conductive silicone pads 40.

[0039] The end face of the battery unit that contacts and connects with the T-shaped aluminum plate 120 and the side aluminum plate 140 is also provided with a PC sheet 30. The PC sheet 30 is disposed between the T-shaped aluminum plate 120 and the battery unit and between the side aluminum plate 140 and the battery unit. The steel strip-free module design improves the strength of the module and increases the reliability of the module during use. The combination of the aluminum plate structure and the thermally conductive silicone pad can conduct the heat of the battery cell to the outer casing, which greatly improves the heat dissipation performance and reduces the need for heat dissipation equipment.

[0040] In a preferred embodiment of this invention, the upper aluminum plate 110 is connected to the T-shaped aluminum plate 120 and the side aluminum plate 140 respectively, and the connecting end faces of the upper aluminum plate 110 and the T-shaped aluminum plate 120 and the side aluminum plate 140 are provided with limiting grooves 151; the T-shaped aluminum plate 120 and the side aluminum plate 140 are provided with limiting rails 152 adapted to the limiting grooves 151;

[0041] It should be noted that the limiting slide groove 151 and the limiting slide rail 152 are provided with screw holes for accommodating bolts. After the limiting slide groove 151 and the limiting slide rail 152 are assembled, the bolt passes through the limiting slide groove 151 and the upper aluminum plate 110 and is assembled into the screw hole provided on the limiting slide rail 152.

[0042] The lower aluminum plate 130 is connected to the T-shaped aluminum plate 120 and the side aluminum plate 140 using the same structural method as the limiting slide groove 151 and the limiting slide rail 152.

[0043] The side aluminum plate 140 is provided with a limiting end groove 154 in the middle section, and the web of the T-shaped aluminum plate 120 is provided with a limiting end 153 away from the flange end. The limiting end 153 adopts a trapezoidal structure. The limiting end 153 and the limiting end groove 154 are adapted to each other. The connection between the side aluminum plate 140 and the T-shaped aluminum plate 120 is also fixed by bolts to enhance the connection effect between the side aluminum plate 140 and the T-shaped aluminum plate 120.

[0044] In this embodiment, the aluminum plate assembly 10 adopts the snap-fit ​​structure principle to achieve snap-fit ​​connection, which further improves the structural stability of the aluminum plate assembly 10. The battery cell assembly 20 usually has high density and high load, which puts high requirements on the support structure. In order to avoid the aluminum plate assembly 10 falling apart during use due to a simple connection structure, a stable support structure is required.

[0045] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A stripless energy storage battery module, characterized in that, include: An aluminum plate assembly (10) is provided with two sets of battery compartments that are separated from each other. The aluminum plate assembly (10) includes an upper aluminum plate (110), a T-shaped aluminum plate (120), a lower aluminum plate (130), and a side aluminum plate (140). The middle section of the side aluminum plate (140) is connected to the web of the T-shaped aluminum plate (120). The side aluminum plate (140) and the T-shaped aluminum plate (120) form an H-shaped structure. The upper aluminum plate (110) and the lower aluminum plate (130) are connected to the side aluminum plate (140) and the T-shaped aluminum plate (120) to form a double-layer compartment. Battery units, which are arranged inside the compartment.

2. The steel-belt-less energy storage battery module as described in claim 1, characterized in that, The internal structure of the compartment consists of two layers, upper and lower, forming the battery compartment.

3. A stripless energy storage battery module as described in claim 2, characterized in that, The battery unit includes three sets of cell assemblies (20), and the battery unit is arranged in different battery compartments.

4. A stripless energy storage battery module as described in claim 3, characterized in that, The upper aluminum plate (110) is provided with a limiting groove (151) on the connecting end face of the T-shaped aluminum plate (120) and the side aluminum plate (140); the T-shaped aluminum plate (120) and the side aluminum plate (140) are provided with limiting rails (152) adapted to the limiting groove (151); During the assembly process, after the limiting slide rail (152) and the limiting slide groove (151) are engaged and connected, the upper aluminum plate (110) is then connected to the T-shaped aluminum plate (120) and the side aluminum plate (140) by bolts.

5. A stripless energy storage battery module as described in claim 4, characterized in that, The lower aluminum plate (130) is provided with a limiting slide groove (151) on the end face connecting the T-shaped aluminum plate (120) and the side aluminum plate (140), and the T-shaped aluminum plate (120) and the side aluminum plate (140) are provided with a limiting slide rail (152) on the end face of the upper aluminum plate (110) away from each other; During assembly, the lower aluminum plate (130) is connected to the T-shaped aluminum plate (120) and the side aluminum plate (140) by bolts, and is located away from the end face of the upper aluminum plate (110). The limiting slide rail (152) is engaged with the limiting slide groove (151).

6. A stripless energy storage battery module as described in claim 5, characterized in that, The web of the T-shaped aluminum plate (120) is provided with a limiting end (153) away from the flange end, and the middle section of the side aluminum plate (140) is provided with a limiting end groove (154). The limiting end (153) and the limiting end groove (154) are compatible. During the self-connection process, the limiting end (153) and the limiting end groove (154) are engaged, and the side aluminum plate (140) and the web of the T-shaped aluminum plate (120) are connected by bolts.

7. A stripless energy storage battery module as described in claim 6, characterized in that, The limiting end (153) has a trapezoidal structure.

8. A stripless energy storage battery module as described in claim 7, characterized in that, The inner walls of the upper aluminum plate (110) and the lower aluminum plate (130) are provided with thermally conductive silicone pads (40), and the upper aluminum plate (110) and the lower aluminum plate (130) are respectively connected to the battery unit through the thermally conductive silicone pads (40).

9. A stripless energy storage battery module as described in claim 8, characterized in that, The end face of the battery unit that is in contact with the T-shaped aluminum plate (120) and the side aluminum plate (140) is also provided with a PC sheet (30).

10. A stripless energy storage battery module as described in claim 9, characterized in that, The The battery cell also has a separator inside, which is disposed between adjacent cell assemblies (20).

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