Heat diffusion prevention structure of soft package battery cell module

Abstract

The utility model provides a soft package battery cell module thermal diffusion prevention structure which comprises a battery cell frame and a plurality of battery cell modules arranged in the battery cell frame, side plates are arranged on two sides of the battery cell frame in a covering mode, the side plates cover the sides of all the battery cell modules at the same time, a plurality of exhaust holes are formed in two sides of each side plate at intervals, and one end of each exhaust hole faces the installation position of the corresponding battery cell module. According to the battery cell module, thermal runaway of the battery cells is effectively avoided, and the heat dissipation effect of the battery cell module is improved.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicles, and in particular to a heat diffusion prevention structure of a soft-pack battery core module. Background Art

[0002] With the development of new energy technology, more and more attention is paid to module safety. There is a risk of thermal runaway in the process of charging and discharging of battery cells. Once a battery cell has thermal runaway and the high-temperature waste cannot be removed in time, it will cause thermal runaway in new battery cells, leading to heat diffusion.

[0003] In order to ensure safety, the existing technology seals the entire module with potting glue, or uses a stronger shell to protect the battery cell, which greatly reduces the energy density and thermal conductivity of the module. Utility Model Content

[0004] The utility model aims to provide a soft-pack battery cell module heat diffusion prevention structure which can effectively avoid thermal runaway of the battery cell and improve the heat dissipation effect of the battery cell module.

[0005] In order to solve the above technical problems, the utility model provides a soft-pack battery cell module anti-heat diffusion structure, including a battery cell frame, a plurality of battery cell modules placed inside the battery cell frame, and side panels are provided on both sides of the battery cell frame. The side panels cover the sides of all battery cell modules at the same time, and a plurality of exhaust holes are spaced apart on both sides of the side panels, and one end of the exhaust hole faces the installation position of the battery cell module.

[0006] Furthermore, a heat insulating sheet is provided between two adjacent battery cell modules.

[0007] Furthermore, there is a gap between two adjacent battery cell modules, and the thermal insulation sheet is located in the gap.

[0008] Furthermore, a plurality of mounting holes are arranged on the sides of the cell frame, and a plurality of connecting holes matching the mounting holes are opened on the sides of the side panels, so that the connecting parts pass through the connecting holes and the mounting holes to fix the side panels and the cell frame.

[0009] Furthermore, a plurality of mounting grooves are provided on the sides of the cell frame, and two ends of the mounting grooves are respectively connected to the connection holes of the side plates on both sides of the cell frame.

[0010] Furthermore, the cell frame has a positioning groove at an edge close to the side plate, and the end of the side plate is buckled in the positioning groove.

[0011] Furthermore, foam glue is provided at the tabs of the battery cell module.

[0012] The beneficial effect of the utility model is that the installation of several battery cell modules is limited by the battery cell frame and the side plate to ensure the stable installation of the battery cell modules. At the same time, by setting a plurality of exhaust holes, when the battery cell module suffers from thermal runaway, waste and high-temperature gas can be discharged outward from the exhaust holes in time, thereby avoiding the problem of heat diffusion between the battery cell modules and improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the position of the heat insulation sheet in the utility model.

[0015] Figure numerals: 1. battery cell frame; 2. battery cell module; 3. side panel; 4. exhaust hole; 5. thermal insulation sheet; 6. mounting hole; 7. connecting hole; 8. mounting groove; 9. positioning groove. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0017] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0018] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0019] like Figure 1-2The utility model provides a soft-pack battery cell module anti-heat diffusion structure, including a battery cell frame 1, and a plurality of battery cell modules 2 placed inside the battery cell frame 1, and side panels 3 are provided on both sides of the battery cell frame 1, and the side panels 3 cover the sides of all battery cell modules 2 at the same time, and a plurality of exhaust holes 4 are spaced apart on both sides of the side panels 3, and one end of the exhaust hole 4 faces the installation position of the battery cell module 2.

[0020] The installation of several battery cell modules is limited by the battery cell frame and the side plate to ensure the stable installation of the battery cell modules. At the same time, by setting a number of exhaust holes, when the battery cell module suffers from thermal runaway, waste and high-temperature gas can be discharged outward from the exhaust holes in time, avoiding the problem of heat diffusion between the battery cell modules and improving the heat dissipation effect.

[0021] Preferably, a heat insulating sheet 5 is provided between two adjacent battery core modules 2 .

[0022] Specifically, the thermal insulation sheet can effectively isolate the heat between two adjacent battery cell modules to avoid heat diffusion problems between adjacent battery cell modules caused by the heat rise of a single battery cell module. At the same time, the thermal insulation sheet cooperates with the battery frame to improve the support and positioning effect of each battery cell module.

[0023] Among them, the heat insulation sheet is adopted.

[0024] Preferably, there is a gap between two adjacent battery core modules 2, and the thermal insulation sheet 5 is located in the gap.

[0025] Specifically, when installing the thermal insulation sheet, the battery cell module on one side is installed first, and then the thermal insulation sheet and the battery cell module on the other side are installed in sequence, so that the thermal insulation sheet is stably placed between two adjacent battery cell modules to ensure the thermal insulation effect. At the same time, due to the travel of the gap, the two adjacent battery cell modules will not be in direct contact, avoiding heat conduction between the two adjacent battery cell modules.

[0026] Preferably, a plurality of mounting holes 6 are provided on the side of the cell frame 1 , and a plurality of connecting holes 7 matching the mounting holes 6 are opened on the side of the side plate 3 , so that the connecting parts pass through the connecting holes 7 and the mounting holes 6 to fix the side plate 3 and the cell frame 1 .

[0027] Specifically, the connecting piece is passed through the connecting hole and the mounting hole and then tightened, so that the connecting piece fixes the side panel to one side of the battery cell frame to ensure the stable installation of the two. At the same time, the alignment process of the mounting hole and the connecting hole can also synchronously locate the installation position of the side panel, thereby improving the installation stability of the side panel.

[0028] The connecting parts may be bolts which are tightened with nuts.

[0029] Preferably, a plurality of mounting grooves 8 are provided on the sides of the cell frame 1 , and two ends of the mounting grooves 8 are respectively connected to the connection holes 7 of the side plates 3 on both sides of the cell frame 1 .

[0030] Specifically, by setting the installation groove, the connection holes on the side panels on both sides can be connected through the installation groove, so that when the connecting parts adopt structures such as tension bolts, the tension bolts can be directly inserted from the connection holes on one side, and passed through the position of the installation groove to the connection holes on the other side, so that the tension bolts can effectively limit the side panels on both sides.

[0031] Preferably, the cell frame 1 has a positioning groove 9 at an edge position close to the side plate 3 , and the end of the side plate 3 is buckled in the positioning groove 9 .

[0032] Specifically, when installing the side panels, the two ends of the side panels are respectively buckled into the positioning grooves on both sides, so that the positioning grooves perform preliminary positioning on the side panels, and then the side panels are horizontally moved along the positioning grooves so that the connecting holes and the mounting holes are aligned with each other and installed, so that the side panels are positioned for the second time.

[0033] Preferably, foam glue is provided at the tabs of the battery cell module 2 .

[0034] Specifically, by adding foam glue at the pole ear, it is possible to effectively prevent waste from affecting other battery modules from the pole ear, ensuring that waste and high-temperature gas can only be discharged stably from the exhaust hole.

[0035] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A soft-pack battery module heat diffusion prevention structure, characterized in that: The invention comprises a cell frame (1) and a plurality of cell modules (2) arranged inside the cell frame (1); side panels (3) are provided on both sides of the cell frame (1); the side panels (3) simultaneously cover the sides of all the cell modules (2); and a plurality of exhaust holes (4) are provided at intervals on both sides of the side panels (3); one end of the exhaust hole (4) faces the installation position of the cell module (2).

2. The soft-pack battery module heat diffusion prevention structure according to claim 1, characterized in that: A heat insulating sheet (5) is provided between two adjacent battery core modules (2).

3. The soft-pack battery module heat diffusion prevention structure according to claim 2, characterized in that: There is a gap between two adjacent battery core modules (2), and the heat insulation sheet (5) is located in the gap.

4. The soft-pack battery module heat diffusion prevention structure according to claim 1, characterized in that: A plurality of mounting holes (6) are arranged on the side of the cell frame (1), and a plurality of connection holes (7) matching the mounting holes (6) are opened on the side of the side plate (3), so that the connecting parts pass through the connection holes (7) and the mounting holes (6) to fix the side plate (3) and the cell frame (1).

5. The soft-pack battery module heat diffusion prevention structure according to claim 4, characterized in that: A plurality of mounting grooves (8) are provided on the sides of the cell frame (1), and two ends of the mounting grooves (8) are respectively connected to connection holes (7) of the side plates (3) on both sides of the cell frame (1).

6. The soft-pack battery module heat diffusion prevention structure according to claim 1, characterized in that: The cell frame (1) has a positioning groove (9) at an edge position close to the side plate (3), and the end of the side plate (3) is buckled in the positioning groove (9).

7. The soft-pack battery module heat diffusion prevention structure according to claim 1, characterized in that: Foam glue is provided at the tabs of the battery cell module (2).

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