Battery cell single-module double-side cooling structure

Abstract

The utility model provides a battery cell single-module double-side cooling structure which comprises a battery module and water cooling plates arranged on the two sides of the battery module, a plurality of battery cells are arranged in the battery module, every two adjacent battery cells are connected through a connecting copper bar, and the connecting copper bars are located on the side, close to the water cooling plates, of the battery module; according to the utility model, the heat dissipation effect of the battery module is improved, the heat conduction path is simplified, and structural support is provided for the battery module.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicles, and in particular to a double-sided cooling structure for a single-module battery cell. Background Art

[0002] At present, new energy vehicles are all powered by battery packs. As the performance requirements for battery packs gradually increase, the heat generated by the battery cells is also increasing. The existing solutions are basically based on heat dissipation on the large surface or side of the battery cell, which requires heat dissipation through multiple paths. The heat conduction paths are complex and the heat conduction efficiency is low. The battery cell cannot be cooled in time, which reduces the service life of the battery cell. Utility Model Content

[0003] The utility model aims to provide a double-sided cooling structure for a single-module battery cell, which increases the heat dissipation effect of a battery module, simplifies the heat conduction path, and provides structural support for the battery module.

[0004] In order to solve the above technical problems, the utility model provides a double-sided cooling structure of a single-module battery cell, including a battery module and water-cooling plates arranged on both sides of the battery module. The battery module has a plurality of battery cells, and adjacent battery cells are connected by connecting copper bars, and the connecting copper bars are located on the side of the battery module close to the water-cooling plate.

[0005] Furthermore, a heat-conducting insulating sheet is provided between the connecting copper busbar and the water-cooling plate.

[0006] Furthermore, an extension plate is extended from one end of the water cooling plate, and a cavity is formed between the extension plates on the water cooling plates on both sides of the battery module.

[0007] Furthermore, a water inlet pipe and a water outlet pipe are connected to a side of the extension plate away from the battery module, a flow channel is provided inside the water cooling plate, and both the water inlet pipe and the water outlet pipe are connected to the flow channel.

[0008] Furthermore, a plurality of connecting copper bars are distributed at intervals.

[0009] Furthermore, the thermally conductive insulating sheet covers all the connecting copper bars on one side of the battery module.

[0010] Furthermore, a gap is formed between the water cooling plate and the battery module through a heat-conducting insulating sheet and a connecting copper busbar.

[0011] The beneficial effect of the utility model lies in that, through the arrangement of water cooling plates on both sides of the battery module, the water cooling plates can not only dissipate heat on both sides of the battery module, but also provide structural support to the battery module through the water cooling plates, thereby ensuring stable use and heat dissipation of the battery module. At the same time, due to the series connection of several connecting copper bars and the connecting copper bars between two adjacent battery cells, the water cooling plates can dissipate heat for several battery cells simultaneously, thereby reducing the heat conduction path and increasing the heat conduction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 It is an exploded view of the utility model.

[0014] Figure 3 It is a schematic diagram of the position of the gap in the utility model.

[0015] Figure numerals: 1. battery module; 2. connecting copper busbar; 3. thermal conductive insulating sheet; 4. water cooling plate; 5. extension plate; 6. water inlet pipe; 7. water outlet pipe; 8. gap. 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 1-3 The utility model provides a double-sided cooling structure of a single-module battery cell, including a battery module 1 and water-cooling plates 4 arranged on both sides of the battery module 1. The battery module 4 has a plurality of battery cells, and adjacent battery cells are connected by connecting copper bars 2, and the connecting copper bars 2 are located on the side of the battery module 1 close to the water-cooling plate 4.

[0020] By setting the water cooling plates on both sides of the battery module, the water cooling plates can not only dissipate heat on both sides of the battery module, but also provide structural support for the battery module to ensure stable use and heat dissipation of the battery module. At the same time, due to the series connection of several connecting copper bars and the connecting copper bars between two adjacent battery cells, the water cooling plates can dissipate heat for several battery cells simultaneously, shorten the heat conduction path, and increase the heat conduction efficiency.

[0021] Preferably, a heat-conducting insulating sheet 3 is provided between the connecting copper busbar 2 and the water-cooling plate 4 .

[0022] Specifically, after several connecting copper bars are connected in series to several battery cells, several connecting copper plates are covered by a thermally conductive insulating sheet, so that the thermally conductive insulating sheet can transfer the heat on the several connecting copper bars to the water cooling plate, and then the heat of several battery cells can be dissipated to the water cooling plate simultaneously, which greatly reduces the heat conduction path and improves the heat dissipation effect.

[0023] Wherein, the thermally conductive insulating sheet is made of thermally conductive insulating material.

[0024] Preferably, an extension plate 5 is extended from one end of the water-cooling plate 4 , and a cavity is formed between the extension plates 5 on the water-cooling plates 4 on both sides of the battery module 1 .

[0025] Specifically, by setting the extension plate, a cavity can be formed between the extension plates on both sides of the battery module, and then the cavity provides installation space for the battery module and the water cooling plate, ensuring convenient installation of the water cooling plate and the cooling structure as a whole.

[0026] Preferably, a water inlet pipe 6 and a water outlet pipe 7 are connected to a side of the extension plate 5 away from the battery module 1 , a flow channel is provided inside the water cooling plate 4 , and the water inlet pipe 6 and the water outlet pipe 7 are both connected to the flow channel.

[0027] Specifically, water-cooling liquid is introduced from the water inlet pipe and allowed to flow along the flow channel, thereby taking away the heat conducted from the battery cell to the water-cooling plate, and then flows out from the water outlet pipe to ensure stable heat dissipation of the water-cooling plate.

[0028] Preferably, a plurality of connecting copper bars 2 are distributed at intervals.

[0029] Specifically, when the connecting copper busbar is used to electrically connect two adjacent battery cells, avoid connecting a single connecting copper busbar to multiple battery cells at the same time, so as to ensure the series connection effect between the battery cells and increase the stability of the power supply of the battery module.

[0030] Preferably, the thermally conductive insulating sheet 3 covers all the connecting copper bars 2 on one side of the battery module 1 .

[0031] Specifically, the thermally conductive insulating sheet covers all the connecting copper bars, which can effectively ensure uniform heat dissipation of all the connecting copper bars. There is no need to wait for the heat from the battery cells to dissipate to the outer shell of the battery module and then conduct heat through the remaining heat conductive parts, which further shortens the heat conduction path.

[0032] Preferably, a gap 8 is formed between the water cooling plate 4 and the battery module 1 through the heat conductive insulating sheet 3 and the connecting copper busbar 2 .

[0033] Specifically, by setting the gap, direct contact between the water cooling plate and the battery module is avoided, thereby avoiding the problem of partial heat conduction from the battery module to the water cooling plate, resulting in different heat conduction effects in different parts of the battery module, thereby improving the overall heat dissipation stability of the battery module.

[0034] 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 double-sided cooling structure for a single-module battery cell, characterized in that: The invention comprises a battery module (1) and water cooling plates (4) arranged on both sides of the battery module (1); the battery module (4) comprises a plurality of battery cells; two adjacent battery cells are connected via a connecting copper bus (2); and the connecting copper bus (2) is located on a side of the battery module (1) close to the water cooling plate (4).

2. The double-sided cooling structure of a single-module battery cell according to claim 1, characterized in that: A heat-conducting insulating sheet (3) is provided between the connecting copper bar (2) and the water-cooling plate (4).

3. The double-sided cooling structure of a single-module battery cell according to claim 1, characterized in that: An extension plate (5) is extended from one end of the water cooling plate (4), and a cavity is formed between the extension plates (5) on the water cooling plates (4) on both sides of the battery module (1).

4. The double-sided cooling structure of a single-module battery cell according to claim 2, characterized in that: A water inlet pipe (6) and a water outlet pipe (7) are connected to the side of the extension plate (5) away from the battery module (1); a flow channel is provided inside the water cooling plate (4), and the water inlet pipe (6) and the water outlet pipe (7) are both connected to the flow channel.

5. The double-sided cooling structure of a single-module battery cell according to claim 1, characterized in that: A plurality of connecting copper bars (2) are distributed at intervals.

6. The battery cell single module double-sided cooling structure according to claim 2, characterized in that: The heat-conducting insulating sheet (3) covers all the connecting copper bars (2) on one side of the battery module (1).

7. The battery cell single module double-sided cooling structure according to claim 2, characterized in that: A gap (8) is formed between the water cooling plate (4) and the battery module (1) through the heat-conducting insulating sheet (3) and the connecting copper busbar (2).

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