Battery cell module for low-speed vehicle

Abstract

The utility model relates to a battery cell module for a low-speed vehicle, which belongs to the technical field of batteries and comprises a shell, a plurality of groups of module main supports and module end plates at one ends of the module main supports are mounted in the shell, and the module main supports and the module end plates form a cuboid structure with a groove. The battery module comprises a module main support, a plurality of battery cells are installed in the module main support, EVA foam is installed between every two battery cells, a heating mold is installed at the bottom of the module main support, and insulating epoxy plates are pasted on the module main support and located on the two sides of the heating mold. According to the square aluminum shell battery module, the module main bracket and the module end plate are fixed by the module pressing plate, so that fixation in three directions is realized, and on the premise of ensuring safety and reliability, the design is simplified, so that the module structure has good expansibility in the transverse direction and the longitudinal direction, and the square aluminum shell battery module can adapt to most square aluminum shell batteries.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a low-speed vehicle battery cell module. Background Technology

[0002] The low-speed electric vehicle market is rapidly developing and has a large demand. Existing patents, such as the battery pack described in application number CN202220191014.6, include several battery modules and a first fixing component. The battery modules form a battery module group. The first fixing component includes a connector and a first fixing beam. First fixing beams are respectively provided on opposite sides of the battery module group. The two ends of all first fixing beams are connected by a first connector and a second connector, respectively. Each battery module has at least one first connector hole, and the first fixing beam has a second connector hole corresponding to the first connector hole. The connector is inserted into the first and second connector holes. This battery pack achieves the connection and fixation of the first fixing beam and battery modules by connecting the first fixing beam to the first and second connectors, and by inserting the connector into the first and second connector holes, thus giving the battery pack high assembly efficiency and stability.

[0003] Lithium iron phosphate batteries with square aluminum shells have significant advantages in safety and energy density. Therefore, there is a need to design a battery module that is safe, low-cost, and scalable with square aluminum shells. Utility Model Content

[0004] This utility model aims to solve the above-mentioned technical problems by providing a low-speed vehicle battery cell module.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A low-speed vehicle battery module includes a housing, multiple sets of module main supports installed inside the housing, and a module end plate at one end of each module main support. The module main supports and module end plates form a cuboid structure with grooves. Multiple battery cells are installed inside the module main supports, and EVA foam is installed between two battery cells. A heating mold is installed at the bottom of the module main supports, and insulating epoxy boards are pasted on both sides of the module main supports and located on the heating mold.

[0007] Preferably, the main support of the module and the end plate of the module are fixedly connected by bolts.

[0008] Preferably, limit brackets are installed on the opposite sides of both the main support of the module and the end plate of the module.

[0009] Preferably, a first base plate for fixing the limiting bracket is installed inside the housing, a connecting frame is installed on the first base plate, and a second base plate for fixing the limiting bracket is bolted on the connecting frame.

[0010] Preferably, the limiting bracket is bolted to the second base plate and the first base plate.

[0011] Preferably, the upper end of the module main support is bolted with a module pressure plate for limiting the position of the battery cell.

[0012] Preferably, a cover plate is screwed onto the housing.

[0013] Preferably, a fixing bracket for connection is installed on the outer side of the housing.

[0014] With the above structure, this utility model has the following advantages:

[0015] The battery cell of this utility model is fixed in the groove of the module main bracket. It is fixed in three directions by the module main bracket and the module end plate, and then fixed by the module pressure plate. Under the premise of ensuring safety and reliability, the design is simplified and the module structure has good scalability in both the horizontal and vertical directions, which can adapt to most square aluminum shell batteries.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal installation of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation of the battery cell of this utility model;

[0021] Figure 4 This is an internal schematic diagram of the main support frame of the module of this utility model;

[0022] Figure 5This is an exploded schematic diagram of this utility model.

[0023] As shown in the figure: 1. Main support of the module; 2. Module end plate; 3. Battery cell; 4. EVA foam; 5. Heating mold; 6. Insulating epoxy board; 7. Limiting bracket; 8. Housing; 9. First base plate; 10. Connecting frame; 11. Second base plate; 12. Module pressure plate; 13. Cover plate; 14. Fixing bracket. Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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 refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] The present invention will now be described in further detail in conjunction with the full text.

[0027] Combined with appendix Figures 1-5 A low-speed vehicle battery module includes a housing 8, multiple main module supports 1 and a module end plate 2 at one end of each main module support 1 installed inside the housing 8. The main module support 1 and the module end plate 2 form a cuboid structure with grooves. Multiple battery cells 3 are installed inside the main module support 1, with EVA foam 4 installed between two battery cells 3. A heating mold 5 is installed at the bottom of the main module support 1. Insulating epoxy boards 6 are attached to both sides of the main module support 1 and located on the heating mold 5. A module pressure plate 12 for limiting the position of the battery cells 3 is bolted to the upper end of the main module support 1. The main module support 1 and the module end plate 2 are bolted together. Limit brackets 7 are installed on both the back and front sides of the main module support 1 and the module end plate 2. The module is fixed by bolts using the main support 1 and the movable module end plate 2. The module end plate 2 has a fixed bracket. Together with the movable module end plate, the battery cell 3 is fixed in the groove of the main support 1. The module pressure plate 12 is then used to fix it, achieving fixation in three directions.

[0028] In specific implementation of this utility model, such as Figure 3-5As shown. The main support frame 1 of the module consists of a drawer-shaped sheet metal support as the main frame, with a heating film 5 placed on one bottom side and insulating epoxy boards 6 pasted on both sides. This main support frame can be adjusted in different directions according to the length and width of the square battery, which can meet the needs of most square batteries. Individual battery cells 3 are placed sequentially inside the battery module. EVA foam 4 is added between the battery cells 3 and they are bonded together. The module pressure plate 12 is used to press them together.

[0029] In specific implementation of this utility model, such as Figures 1-3 As shown, a first base plate 9 for fixing a limiting bracket 7 is installed inside the housing 8. A connecting frame 10 is installed on the first base plate 9, and a second base plate 11 for fixing the limiting bracket 7 is bolted to the connecting frame 10. The limiting bracket 7 is bolted to the second base plate 11 and the first base plate 9. A cover plate 13 is screwed onto the housing 8, and a fixing bracket 14 for connection is installed on the outside of the housing 8. Multiple sets of module main brackets 1 are installed inside the housing 8. The bottom layer of module main brackets 1 are bolted to the first base plate 9 via the limiting bracket 7. After the bottom layer is completed, the second base plate 11 is bolted to the connecting frame 10, and the second layer of module main brackets 1 are bolted to the second base plate 11 via the limiting bracket 7.

[0030] The working principle of this utility model:

[0031] Individual battery cells 3 are placed sequentially inside the battery module. EVA foam 4 is used to bond the cells 3 together. The main support 1 and end plate 2 of the module are bolted together, and a module pressure plate 12 is used for pressing. Multiple main support frames 1 are installed inside the housing 8. The bottom main support frame 1 is bolted to the first base plate 9 via a limiting bracket 7. After the bottom layer is completed, the second base plate 11 is bolted onto the connecting frame 10. The second layer main support frame 1 is bolted to the second base plate 11 via the limiting bracket 7. This is a low-cost and expandable square aluminum shell battery module. It can be expanded in length, width, and height directions to accommodate most square batteries of different sizes.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout the text are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A low-speed automotive battery cell module, characterized in that, The system includes a housing (8), multiple sets of module main supports (1) installed inside the housing (8), and a module end plate (2) at one end of each set of module main supports (1). The module main supports (1) and the module end plate (2) form a cuboid structure with grooves. Multiple battery cells (3) are installed inside the module main supports (1). EVA foam (4) is installed between two battery cells (3). A heating mold (5) is installed at the bottom of the module main supports (1). Insulating epoxy boards (6) are pasted on both sides of the module main supports (1) and located on both sides of the heating mold (5).

2. The low-speed vehicle battery cell module according to claim 1, characterized in that: The module main support (1) and module end plate (2) are bolted together.

3. The low-speed vehicle battery cell module according to claim 1, characterized in that: Limit brackets (7) are installed on the opposite sides of both the module main support (1) and the module end plate (2).

4. The low-speed vehicle battery cell module according to claim 3, characterized in that: The housing (8) is equipped with a first base plate (9) for fixing the limiting bracket (7), and a connecting frame (10) is installed on the first base plate (9). A second base plate (11) for fixing the limiting bracket (7) is bolted on the connecting frame (10).

5. A low-speed vehicle battery cell module according to claim 4, characterized in that: The limiting bracket (7) is bolted to the second base plate (11) and the first base plate (9).

6. The low-speed vehicle battery cell module according to claim 1, characterized in that: The upper end of the module main support (1) is bolted with a module pressure plate (12) for limiting the position of the battery cell (3).

7. A low-speed vehicle battery cell module according to claim 1, characterized in that: A cover plate (13) is screwed onto the housing (8).

8. A low-speed vehicle battery cell module according to claim 1, characterized in that: A fixing bracket (14) for connection is installed on the outside of the housing (8).

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