Household energy storage battery system cell grouping installation structure

Abstract

This utility model discloses a cell assembly structure for a household energy storage battery system, including a main chassis, a chassis cover, modules, a sampling unit, and electrical components. Each module includes screws, cells, two side end plates, a middle connecting beam, a front baffle, and a PC insulating film. The module is connected to the main chassis via multiple screws. The sampling unit is connected to the cells by welding. The cells are assembled into groups using the side end plates, the middle connecting beam, the front baffle, and the PC insulating film, along with the main chassis. PC insulating film is adhered to the contact surfaces of the cells with the side end plates, the middle connecting beam, and the main chassis. End plate pressure bosses are provided at the connection points between the side end plates and the middle connecting beam. This utility model eliminates the need for plastic steel straps to fix the cells, reducing material consumption; it also eliminates the need for series copper busbars connecting modules, further reducing material consumption; and it reduces the space occupied by the module installation, improving space utilization.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery system technology, specifically to a cell assembly structure for a household energy storage battery system. Background Technology

[0002] As carbon peaking and carbon neutrality become a global consensus, the proportion of new energy in the entire energy system is rapidly increasing. A large amount of capital is pouring into the new energy market. In a competitive environment, the cost of batteries for residential energy storage systems is becoming increasingly lower, and optimization of production processes has become the main factor in cost reduction.

[0003] The cell assembly structure is the most important component of a fast-swap battery pack. Its basic components include cells, insulating foam, and cooling plates. These units are stacked layer by layer, like making a sandwich, to form the smallest unit of the power battery. They are then installed in a frame that provides stability, forming the basic framework of the battery pack. However, existing cell assembly structures suffer from inefficient space utilization and high material consumption. Therefore, there is an urgent need to design a cell assembly structure for residential energy storage battery systems to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a cell assembly structure for a residential energy storage battery system. This structure facilitates cell assembly, improves battery space utilization, and reduces material consumption, thereby lowering battery manufacturing costs. The specific technical solution is as follows:

[0005] A cell assembly structure for a residential energy storage battery system includes a chassis body, a chassis cover, modules, a sampling unit, and electrical components. Each module includes screws, cells, two side end plates, a middle connecting beam, a front baffle, and a PC insulating film. The module is connected to the chassis body via multiple screws. The sampling unit is connected to the cells by welding. The cells are assembled into groups using the side end plates, the middle connecting beam, the front baffle, and the PC insulating film, along with the chassis body. PC insulating film is adhered to the contact surfaces of the cells with the side end plates, the middle connecting beam, and the chassis body. End plate pressure bosses are provided at the connection points between the side end plates and the middle connecting beam.

[0006] Preferably, the bottom of the chassis body is provided with a bottom pressure protrusion, and a rivet nut is installed on the inner side of the bottom pressure protrusion. The module moves up and down by being limited by multiple screws above.

[0007] Preferably, the main body of the chassis has mounting holes at both ends, and the side end plates and the middle connecting beam are fitted with screws through the mounting holes. The battery cells are limited to move left and right by the side end plates.

[0008] Preferably, the rear end of the battery cell contacts the main body of the chassis, and the front end of the battery cell is fixed with screws using a front end baffle. The battery cell is limited to move back and forth by the main body of the chassis and the front end baffle.

[0009] Preferably, the battery cells are connected in series via aluminum busbars of the sampling unit.

[0010] Compared with the closest existing technology, the technical solution provided by this utility model has the following beneficial effects:

[0011] 1. This utility model uses screws to assemble the battery cells by means of two end plates, a middle connecting beam, a front end baffle, a PC insulating film, and the main body of the chassis, eliminating the need for plastic steel strips to fix the battery cells and reducing material consumption;

[0012] 2. In this utility model, all battery cells are connected in series via aluminum busbars of sampling units, eliminating the need for copper busbars connecting modules in series, thus reducing material consumption;

[0013] 3. The rear end of the module of this utility model relies on the main body of the chassis to limit its vertical, horizontal, and front-back movement, thereby reducing the space occupied by the module installation and improving space utilization. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the battery system of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the battery system of this utility model;

[0016] Figure 3 This is a top view of the internal structure of the battery system of this utility model;

[0017] Figure 4 This is a schematic diagram of the battery module of this utility model;

[0018] Figure 5 This is a schematic diagram of the bottom of the battery system of this utility model;

[0019] in:

[0020] 1. Chassis body, 2. Chassis top cover, 3. Module, 4. Sampling unit, 5. Electrical components, 6. Screws, 7. Battery cell, 8. Side end plates, 9. Middle connecting beam, 10. Front baffle, 11. PC insulating film, 12. Bottom recessed boss of chassis body, 13. Press-fit nut, 14. End plate recessed boss, 15. Mounting hole. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-5 This utility model provides a technical solution:

[0023] A cell assembly structure for a residential energy storage battery system includes a main chassis 1, a chassis cover 2, modules 3, sampling units 4, and electrical components 5. Module 3 includes screws 6, cells 7, two side end plates 8, a central connecting beam 9, a front baffle 10, and a PC insulating film 11. Module 3 is connected to the main chassis 1 via multiple screws 6. The sampling unit 4 is connected to the cells 7 by welding. The cells 7 are fixed to the main chassis 1 via the two side end plates 8, the central connecting beam 9, the front baffle 10, and the PC insulating film 11, using screws 6. The contact surfaces of the cells 7 with the two side end plates 8, the central connecting beam 9, and the main chassis 1 are covered with the PC insulating film 11. End plate pressure bosses 14 are provided at the connection points between the two side end plates 8 and the central connecting beam 9. This invention eliminates the need for plastic straps to fix the cells, reducing material consumption, by assembling the cells 7 via the two side end plates 8, the central connecting beam 9, the front baffle 10, the PC insulating film 11, and the main chassis 1 using screws 6.

[0024] Furthermore, the bottom of the chassis body 1 is provided with a bottom pressure protrusion 12, and a pressure nut 13 is installed on the inner side of the bottom pressure protrusion 12. The module 3 is limited to move up and down by multiple screws 6 above.

[0025] Furthermore, mounting holes 15 are opened at both ends of the chassis body 1, and screws 6 are installed through the mounting holes 15 on the side end plates 8 and the middle connecting beam 9. The battery cell 7 is limited to move left and right by the side end plates 8.

[0026] Furthermore, the rear end of the battery cell 7 contacts the main body of the chassis 1, and the front end of the battery cell 7 is fixed by screws 6 using a front end baffle 10. The battery cell 7 is limited in its forward and backward movement by the main body of the chassis 1 and the front end baffle 10. In this utility model, the rear end of the module relies on the main body of the chassis 1 to limit its vertical, horizontal, and forward and backward movement, thereby reducing the space occupied by the module installation and improving space utilization.

[0027] Furthermore, the battery cell 7 is connected in series via the aluminum busbar of the sampling unit 4. In this invention, all battery cells 7 are connected in series via the aluminum busbar of the sampling unit 4, eliminating the need for copper busbars connecting modules and reducing material consumption.

[0028] The actual installation steps of the cell assembly structure of the household energy storage battery system of this utility model are as follows: First, the main body of the chassis 1 is placed at a 45° angle with the tooling. The first layer of cells 7 is placed in sequence with the help of gravity. The middle connecting beam 9 with the PC insulating film 11 pasted on it is placed above the blue film of the first layer of cells 7. The second layer of cells 7 is placed with the middle connecting beam 9. The two end plates 8 with the PC insulating film 11 pasted on the inside are placed. The screws 6 are installed through the mounting holes 15 to press the cells 7. The front end baffle 10 and the module fixing screws are installed. The sampling unit 4 is welded and installed as a whole. The electrical components 5 are installed. Finally, the chassis cover 2 is installed to complete the installation of the energy storage battery system.

[0029] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A household energy storage battery system cell grouping installation structure, comprising a cabinet main body (1), a cabinet upper cover (2), a module (3), a sampling unit (4), and an electrical element (5), characterized in that: The module (3) includes screws (6), battery cells (7), two side end plates (8), a middle connecting beam (9), a front end baffle (10), and a PC insulating film (11). The module (3) is connected to the chassis body (1) by multiple screws (6) at the top. The sampling unit (4) is connected to the battery cells (7) by welding. The battery cells (7) are fixed together with the chassis body (1) by screws (6) through the two side end plates (8), the middle connecting beam (9), the front end baffle (10), and the PC insulating film (11). The contact surfaces of the battery cells (7) with the two side end plates (8), the middle connecting beam (9), and the chassis body (1) are covered with PC insulating film (11). The connection points between the two side end plates (8) and the middle connecting beam (9) are provided with There is an end plate with a concave and convex protrusion (14); the bottom of the chassis body (1) is provided with a bottom concave and convex protrusion (12), and a rivet nut (13) is installed on the inner side of the bottom concave and convex protrusion (12). The module (3) is limited to move up and down by multiple screws (6) above; the chassis body (1) has mounting holes (15) at both ends, and the two side end plates (8) and the middle connecting beam (9) are installed with screws (6) through the mounting holes (15). The battery cell (7) is limited to move left and right by the two side end plates (8); the rear end of the battery cell (7) is in contact with the chassis body (1), and the front end of the battery cell (7) is fixed by screws (6) using a front end baffle (10). The battery cell (7) is limited to move back and forth by the chassis body (1) and the front end baffle (10).

2. A home energy storage battery system cell grouping installation structure according to claim 1, characterized in that, The battery cell (7) is connected in series via the aluminum busbar of the sampling unit (4).

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