Battery pack cell module

Abstract

This utility model discloses a battery pack cell module, relating to the field of battery pack manufacturing technology. It includes at least two sets of cell units. A T-shaped beam is provided at the top of the connection between the cell units, with the vertical beam of the T-shaped beam inserted downwards into the connection between the cell units. An insulating extruded T-shaped beam, conforming to the outer surface of the T-shaped beam and integrally formed, is provided between the cell unit and the T-shaped beam. A Z-shaped beam is provided at the bottom of the connection between the cell units, with the protrusion of the Z-shaped beam inserted upwards into the connection between the cell units. An insulating extruded Z-shaped beam, conforming to the outer surface of the Z-shaped beam and integrally formed, is provided between the cell unit and the Z-shaped beam. This utility model provides good insulation between the internal cell and the metal beam structure, effectively improving the safety and reliability of the battery pack cell module while increasing production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery pack manufacturing technology, and in particular to a battery pack cell module. Background Technology

[0002] As a complete energy storage system, a battery pack consists of multiple cell modules fixed within a housing by metal frames and connectors, and integrates components such as a BMS (Battery Management System), high-voltage relays, and fuses. The battery cell module is a standardized energy unit, composed of multiple cells connected in series, parallel, or mixed configurations, and formed using structural frames such as L-beams, T-beams, and Z-beams. These structural frames primarily serve to support, fix, and protect the cell units and the entire battery pack.

[0003] Specifically, L-shaped beams are typically used for top or bottom protection of the battery pack sidewalls (i.e., the edge cells of the battery module). Their cross-section is L-shaped, consisting of vertical and horizontal sides. The vertical sides contact the side of the cell unit, and the horizontal sides contact the top or bottom of the cell unit. T-shaped beams have a T-shaped cross-section, consisting of horizontal and vertical beams. The top horizontal beam contacts the module, and the bottom vertical beam inserts into the connection between cell units. Z-shaped beams have a Z-shaped cross-section, consisting of a top plane, two vertical sides, and two bottom planes. The top plane inserts into the connection between cell units, the two vertical sides contact the sidewalls of the cell unit, and the two bottom planes contact the bottom of the cell unit. The top plane, two vertical sides, and two bottom planes together form a downward-opening groove, which can be used to arrange cooling pipes or wiring harnesses.

[0004] Since L-shaped beams, T-shaped beams, and Z-shaped beams are all metal beam structures, in order to prevent electrical short circuits between the cell units in the battery pack cell module and the metal beam structure, and to ensure the safety and reliability of the battery pack, insulation structures need to be designed between the cell units and these metal beams.

[0005] Currently, T-beams mostly use insulating paper for insulation, while Z-beams typically use a combination of epoxy board and insulating paper. However, insulating paper is prone to displacement, poor adhesion, and curling during use, resulting in poor insulation performance; epoxy boards also exhibit displacement, affecting their insulation performance. Furthermore, during operation, both T-beams and Z-beams require applying structural adhesive first, followed by using double-sided tape to fix the insulating paper and epoxy board separately, a cumbersome process with low production efficiency. These problems not only reduce the safety and reliability of battery pack cell modules but also restrict their production efficiency.

[0006] Therefore, it is necessary to design a new type of insulation structure and form a new type of battery pack cell module based on this new insulation structure, thereby improving the safety and reliability of the battery pack cell module and increasing production efficiency. Summary of the Invention

[0007] This utility model provides a battery pack cell module with good insulation between the cells and the metal beam structure, which can effectively improve the safety and reliability of the battery pack cell module, while also increasing production efficiency.

[0008] To solve the above problems, the technical solution adopted by this utility model is:

[0009] It includes at least two sets of battery cell units. A T-shaped beam is provided at the top of the connection between the battery cell units, and the vertical beam of the T-shaped beam is inserted downward into the connection between the battery cell units. An insulating extruded T-shaped beam that is shaped and integrally formed with the T-shaped beam is provided between the battery cell unit and the T-shaped beam. A Z-shaped beam is provided at the bottom of the connection between the battery cell units, and the protrusion of the Z-shaped beam is inserted upward into the connection between the battery cell units. An insulating extruded Z-shaped beam that is shaped and integrally formed with the Z-shaped beam is provided between the battery cell unit and the Z-shaped beam.

[0010] A more specific technical solution than the above-mentioned technical solution is that structural adhesive is filled between the T-beam and the T-beam insulating extruded part.

[0011] Furthermore, structural adhesive is used to fill the space between the Z-beams and the insulating extruded Z-beams.

[0012] Furthermore, the battery cell unit located at the edge has L-shaped beams at the top and bottom corners of its sidewall near the edge, and an L-shaped beam insulating extrusion piece that is integrally formed with and conforms to the outer shape of the L-shaped beam is provided between the battery cell unit and the L-shaped beam.

[0013] Furthermore, structural adhesive is used to fill the space between the L-shaped beam and the L-shaped beam insulating extruded part.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0015] 1. This utility model mainly designs L-shaped beam insulating extruded parts, T-shaped beam insulating extruded parts, and Z-shaped beam insulating extruded parts that are molded in one piece and conform to the external shape of three types of metal beam structures: L-shaped beam, T-shaped beam, and Z-shaped beam. This conformal design that closely fits the metal beam can comprehensively and reliably isolate the cell unit from the metal beam structure, effectively prevent electrical short circuits, and greatly improve the safety and reliability of the battery pack cell module.

[0016] 2. This utility model uses an integrally molded insulating extruded part. Installation can be completed simply by filling the space between the metal beam and the insulating extruded part with structural adhesive, eliminating the need for double-sided tape for fixing, simplifying the operation process, reducing production time and labor costs, and significantly improving production efficiency.

[0017] 3. The insulating extruded parts of this utility model are reliably fixed and are not prone to displacement problems, which can effectively reduce the defect rate caused by insulation problems and further improve production efficiency and product quality.

[0018] 4. The L-shaped beam of this utility model is set at the top and bottom corners of the side wall near the edge of the battery cell unit, which can provide effective support and protection for the edge battery cell unit, enhance the structural strength of the entire battery cell module edge, and prevent the battery cell unit from being deformed or damaged by external forces.

[0019] 5. This utility model further fixes each insulating extruded part by filling structural adhesive between each insulating extruded part and the three types of metal beam structures: L-shaped beam, T-shaped beam, and Z-shaped beam. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a front view of the present invention.

[0022] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0023] Figure 4 for Figure 2 A magnified view of a section at point B in the middle.

[0024] Figure 5 for Figure 2 A magnified view of a section at point C.

[0025] Figures 1-5 In the diagram, the following labels represent different components: 1 – battery cell unit, 2 – T-beam, 3 – T-beam insulating extruded part, 4 – Z-shaped beam, 5 – Z-shaped beam insulating extruded part, 6 – structural adhesive, 7 – L-shaped beam, and 8 – L-shaped beam insulating extruded part. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings:

[0027] like Figure 1-5The battery pack cell module shown includes at least two sets of cell units 1. A T-shaped beam 2 is provided at the top of the connection between the cell units 1, and the vertical beam of the T-shaped beam 2 is inserted downward into the connection between the cell units 1. A T-shaped beam insulating extruded part 3, which is shaped and integrally formed with the T-shaped beam 2, is provided between the cell unit 1 and the T-shaped beam 2. A Z-shaped beam 4 is provided at the bottom of the connection between the cell units 1, and the protrusion of the Z-shaped beam 4 is inserted upward into the connection between the cell units 1. A Z-shaped beam insulating extruded part 5, which is shaped and integrally formed with the Z-shaped beam 4, is provided between the cell unit 1 and the Z-shaped beam 4.

[0028] The above technical solution mainly involves designing T-shaped beam insulating extrusion 3 and Z-shaped beam insulating extrusion 5 (and L-shaped beam insulating extrusion 8) that are integrally molded and conform to the external shape of the metal beam structures, such as T-shaped beam 2, Z-shaped beam 4 (and L-shaped beam 7 mentioned later). This conformal design that closely fits the metal beam can comprehensively and reliably isolate the cell unit 1 from the metal beam structure, effectively prevent electrical short circuits, and greatly improve the safety and reliability of the battery pack cell module.

[0029] Preferably, structural adhesive 6 can be filled between the T-beam 2 and the T-beam insulating extruded part 3 to further fix the T-beam insulating extruded part.

[0030] Similarly, preferably, structural adhesive 6 can be filled between the Z-beam 4 and the Z-beam insulating extruded part 5 to further fix the Z-beam insulating extruded part.

[0031] Preferably, the battery cell unit 1 located at the edge has L-shaped beams 7 at the top and bottom corners of its sidewall near the edge. An L-shaped beam insulating extruded part 8, which is shaped and integrally formed with the L-shaped beam 7, is provided between the battery cell unit 1 and the L-shaped beam 7. This can provide effective support and protection for the edge battery cell unit 1, enhance the structural strength of the entire battery cell module edge, and prevent the battery cell unit 1 from being deformed or damaged by external forces.

[0032] Similarly, preferably, structural adhesive 6 is filled between the L-shaped beam 7 and the L-shaped beam insulating extruded part 8, thereby further fixing the L-shaped insulating extruded part.

[0033] Regarding this utility model, during installation, structural adhesive is first applied to the exterior surfaces of the L-shaped beam 7, T-shaped beam 2, and Z-shaped beam 4, and then the L-shaped beam insulating extruded part 8, T-shaped beam insulating extruded part 3, and Z-shaped beam insulating extruded part 5 are assembled respectively. The operation is convenient and simple, greatly improving production efficiency, while avoiding the risk of poor insulation that may occur when using insulating paper and epoxy board.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery pack cell module, characterized by: The device includes at least two sets of battery cell units. A T-shaped beam is provided at the top of the connection point between the battery cell units, and the vertical beam of the T-shaped beam is inserted downwards into the connection point between the battery cell units. An insulating extruded T-shaped beam, conforming to the shape of the T-shaped beam and integrally formed, is provided between the battery cell unit and the T-shaped beam. A Z-shaped beam is provided at the bottom of the connection point between the battery cell units, and the protrusion of the Z-shaped beam is inserted upwards into the connection point between the battery cell units. An insulating extruded Z-shaped beam, conforming to the shape of the Z-shaped beam and integrally formed, is provided between the battery cell unit and the Z-shaped beam.

2. The battery pack cell module of claim 1, wherein: Structural adhesive is used to fill the space between the T-beam and the insulating extruded part of the T-beam.

3. The battery pack cell module of claim 2, wherein: Structural adhesive is used to fill the space between the Z-beams and the insulating extruded Z-beams.

4. The battery pack cell module of claim 1 or 2 or 3, wherein: The battery cell unit located at the edge has L-shaped beams at the top and bottom corners of its sidewall near the edge. An L-shaped beam insulating extrusion piece, which is molded integrally with the outer shape of the L-shaped beam, is provided between the battery cell unit and the L-shaped beam.

5. The battery pack cell module of claim 4, wherein: Structural adhesive is used to fill the space between the L-shaped beam and the insulating extruded part of the L-shaped beam.

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