An aircraft battery cooling panel

Abstract

The utility model relates to battery safety technical field, and disclose a kind of aircraft battery cooling plate, including integrated cold plate, flow channel cavity and cavity are provided in the integrated cold plate, cooling liquid is filled in the flow channel cavity, cooling is carried out to electric core by cooling liquid flow, liquid inlet and liquid outlet are further provided on the integrated cold plate, the liquid inlet and liquid outlet are all communicated with flow channel cavity, for promoting cooling liquid circulation, improve cooling effect, multiple blowout ports are further provided on the integrated cold plate, multiple the blowout port is connected with cavity body. The utility model provides a kind of aircraft battery cooling plate, with distributed independent blowout port design, reduce the risk of thermal runaway chain reaction between electric core, facilitate troubleshooting and maintenance and the like advantages, solve the probability of multiple electric core thermal runaway simultaneously and stability, security problem.

Description

Technical Field

[0001] This utility model relates to the field of battery safety technology, specifically to a cooling plate for aircraft batteries. Background Technology

[0002] Battery modules are an important component of electric aircraft. Currently, the direction of thermal runaway explosions in batteries is mostly uncontrollable or requires additional smoke duct structures. In particular, the ability to control thermal runaway is especially important in the field of electric aircraft.

[0003] Traditional cold plates only have a single heat dissipation function, and thermal runaway protection requires external additional structures. In existing technologies, the explosion venting channel is mostly an integral structure, and thermal runaway of any cell will affect the effectiveness of the entire explosion venting system.

[0004] Therefore, we propose an aircraft battery cooling plate to solve the above problems. Utility Model Content

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an aircraft battery cooling plate with a distributed independent vent design, which reduces the risk of thermal runaway chain reaction between battery cells and facilitates fault diagnosis and maintenance. It solves the problems of probability, stability, and safety of simultaneous thermal runaway of multiple battery cells.

[0006] (II) Technical Solution To achieve the aforementioned distributed independent vent design, reduce the risk of inter-cell thermal runaway chain reaction, and facilitate fault diagnosis and maintenance, this utility model provides the following technical solution: an aircraft battery cooling plate, comprising an integrated cooling plate, wherein the integrated cooling plate is provided with a flow channel cavity and a cavity, the flow channel cavity is filled with coolant, and the flow of coolant is used to cool the cells. The integrated cooling plate is also provided with an inlet and an outlet, both of which are connected to the flow channel cavity to promote coolant circulation and improve cooling effect. The integrated cooling plate is also provided with multiple vents, which are connected to the cavity. A vent is provided on one side of the cavity and connected to the outside of the integrated cooling plate to realize the directional venting function of flames and smoke after thermal runaway of the cells.

[0007] As a further optimization of this utility model: the flow channel cavity is arranged in a serpentine pattern within the integrated cold plate, which increases the arrangement area of ​​the flow channel cavity on the integrated cold plate and improves the cooling effect. The distance between any parallel flow channels is greater than the longest width of the explosion vent, thus avoiding interference between the explosion vent and the flow channel cavity.

[0008] As a further optimization of this utility model: the inlet and outlet are located at the two ends of the flow channel cavity, and the outlet is connected to the inlet through the flow channel cavity. With this arrangement, the coolant can be allowed to flow to the maximum extent in the flow channel cavity and absorb more heat.

[0009] As a further optimization of this utility model, it also includes a battery cell, the bottom of which is provided with an explosion-proof valve, and the bottom of the battery cell is in close contact with the flow channel cavity, where the internal coolant carries away the heat generated by the battery cell.

[0010] As a further optimization of this utility model: the explosion vent is cylindrical, and the explosion-proof valve is located inside the explosion vent. When the battery cell experiences thermal runaway, the explosion-proof valve can discharge the flame and smoke into the cavity through the explosion vent, thereby removing them from the integrated cold plate.

[0011] As a further optimization of this utility model: the center-line distance between two adjacent explosion vents is greater than the center-line distance between two adjacent battery cells, so as to avoid interference between the battery cells during installation.

[0012] As a further optimization of this utility model: the flow channel cavity is located above the cavity, and the height of the explosion vent is greater than the height of the flow channel cavity. With this arrangement, the flow channel cavity can be closely attached to the bottom of the battery cell, improving the heat dissipation effect. At the same time, the flow channel cavity prevents flames and smoke inside the cavity from affecting other battery cells.

[0013] As a further optimization of this utility model: the integrated cold plate is made of metal, which can quickly absorb and dissipate heat.

[0014] As a further optimization of this utility model: the coolant is one or more of water, alcohol, ethylene glycol, and propylene glycol, and a suitable coolant is prepared according to the usage requirements.

[0015] (III) Beneficial Effects Compared with the prior art, this utility model provides a cooling plate for aircraft batteries, which has the following advantages: 1. This battery cooling plate employs a dual-cavity integrated design: the upper layer is a precision flow channel cavity, achieving efficient thermal management through optimized coolant pathways; the lower layer is a directional airflow cavity structure, precisely aligned with the cell's explosion-proof valve. When a cell experiences thermal runaway, the high-temperature gas is directly introduced into the lower cavity through a dedicated vent, and then discharged via a pre-designed guide channel, preventing heat diffusion and ensuring controllable discharge direction. This collaborative design overcomes the limitations of traditional single-function cooling plates, achieving both heat dissipation and thermal runaway protection within the same space.

[0016] 2. This battery cooling plate employs an independent explosion venting scheme. Each cell has an independent explosion vent and an explosion-proof valve forming a closed unit, and each unit is connected to the lower cavity through a physical isolation structure. This design ensures that in the event of thermal runaway of a single cell, its high-temperature flames can only enter the flue through a dedicated channel, completely blocking the lateral propagation path. This design is suitable for aviation battery systems with stringent safety requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the cooling plate of this utility model; Figure 2 This is a schematic diagram of the battery cell mounting structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the cooling plate of this utility model; Figure 4 This is a schematic diagram of a portion of the vertical cross-section structure of this utility model.

[0018] In the diagram: 1. Integrated cold plate; 2. Flow channel cavity; 3. Hollow cavity; 4. Explosion vent; 5. Liquid inlet; 6. Liquid outlet; 7. Battery cell. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 A cooling plate for an aircraft battery includes an integrated cooling plate 1 made of metal, capable of rapidly absorbing and dissipating heat. The integrated cooling plate 1 contains a flow channel cavity 2 and a cavity 3. The flow channel cavity 2 is filled with coolant, which flows to cool the battery cell 7. The coolant is one or a mixture of water, alcohol, ethylene glycol, and propylene glycol, and a suitable coolant is selected based on usage requirements. The integrated cooling plate 1 also has an inlet 5 and an outlet 6, both connected to the flow channel cavity 2 to promote coolant circulation and improve cooling efficiency. The integrated cooling plate 1 also has multiple venting ports 4 connected to the cavity 3. One side of the cavity 3 has a vent that connects to the outside of the integrated cooling plate 1, enabling directional venting of flames and smoke after thermal runaway of the battery cell 7.

[0021] The flow channel cavity 2 is arranged in a serpentine pattern within the integrated cold plate 1, which increases the area of ​​the flow channel cavity 2 on the integrated cold plate 1 and improves the cooling effect. The distance between any parallel flow channels is greater than the longest width of the vent 4 to avoid interference between the vent 4 and the flow channel cavity 2. The liquid inlet 5 and the liquid outlet 6 are located at the two ends of the flow channel cavity 2, respectively. The liquid outlet 5 is connected to the liquid inlet 6 through the flow channel cavity 2. This arrangement ensures that the coolant flows to the maximum extent within the flow channel cavity 2 and absorbs more heat.

[0022] It also includes battery cell 7, which has an explosion-proof valve at its bottom. The bottom of battery cell 7 is in close contact with the flow channel cavity 2, and the coolant flowing inside carries away the heat generated by battery cell 7. The explosion vent 4 is cylindrical, and the explosion-proof valve is located inside the explosion vent 4. When battery cell 7 thermally runs away, the explosion-proof valve can discharge the flame and smoke into the cavity 3 through the explosion vent 4, and then remove them from the integrated cold plate 1. The center-line distance between two adjacent explosion vents 4 is greater than the center-line distance between two adjacent battery cells 7 to avoid interference during the installation of battery cell 7.

[0023] The flow channel cavity 2 is located above the cavity 3, and the height of the explosion vent 4 is greater than the height of the flow channel cavity 2. With this setting, the flow channel cavity 2 can be closely attached to the bottom of the battery cell 7, improving the heat dissipation effect. At the same time, the flow channel cavity 2 prevents the flame and smoke in the cavity 3 from affecting other battery cells 7.

[0024] Working principle: The integrated cold plate 1 is designed with two inner cavities. The first layer is the flow channel cavity 2, which is filled with coolant to realize the thermal management of the battery cell. The second layer is the hollow cavity 3, which realizes the directional release of flame and smoke after thermal runaway of the battery cell 7. After the battery cell 7 is fixed to the integrated cold plate 1 by the structure, the explosion-proof valve at the bottom of the battery cell 7 faces the explosion vent 4. This method realizes that the explosion vent 4 of different battery cells 7 are designed independently, so as to minimize the possibility of thermal runaway. The bottom of the battery cell 7 is close to the flow channel cavity 2, and the internal coolant carries away the heat generated by the battery cell 7.

[0025] The second layer inside the integrated cold plate 1 is a cavity 3. The opening direction of the cavity 3 can be adjusted according to the needs of the whole machine to control the direction of flame and smoke, reduce the impact of thermal runaway on the aircraft crew and equipment. After the flame and smoke overflow from the explosion-proof valve of the battery cell 7, they pass through the explosion relief port 4 and reach the cavity 3 to be discharged through the opening of the cavity 3, thereby making the direction of smoke and flame controllable after thermal runaway.

[0026] 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 cooling plate for an aircraft battery, comprising an integrated cooling plate (1), characterized in that: The integrated cold plate (1) is provided with a flow channel cavity (2) and a cavity (3). The flow channel cavity (2) is filled with coolant. The integrated cold plate (1) is also provided with an inlet (5) and an outlet (6). The inlet (5) and the outlet (6) are both connected to the flow channel cavity (2). The integrated cold plate (1) is also provided with multiple explosion vents (4). The multiple explosion vents (4) are connected to the cavity (3). A vent that communicates with the outside of the integrated cold plate (1) is opened on one side of the cavity (3).

2. The aircraft battery cooling plate according to claim 1, characterized in that: The flow channel cavity (2) is arranged in a serpentine pattern within the integrated cold plate (1), and the distance between any parallel flow channels is greater than the longest width of the explosion vent (4).

3. The aircraft battery cooling plate according to claim 1, characterized in that: The inlet (5) and outlet (6) are located at the two ends of the flow channel cavity (2), and the outlet (6) is connected to the inlet (5) through the flow channel cavity (2).

4. The aircraft battery cooling plate according to claim 1, characterized in that: It also includes a battery cell (7), which has an explosion-proof valve at its bottom.

5. The aircraft battery cooling plate according to claim 4, characterized in that: The explosion vent (4) is cylindrical, and the explosion-proof valve is located inside the explosion vent (4).

6. The aircraft battery cooling plate according to claim 4, characterized in that: The centerline distance between two adjacent explosion vents (4) is greater than the centerline distance between two adjacent battery cells (7).

7. The aircraft battery cooling plate according to claim 1, characterized in that: The flow channel cavity (2) is located above the cavity (3), and the height of the explosion vent (4) is greater than the height of the flow channel cavity (2).

8. The aircraft battery cooling plate according to claim 1, characterized in that: The integrated cold plate (1) is made of metal.

9. The aircraft battery cooling plate according to claim 1, characterized in that: The coolant is one or a mixture of water, alcohol, ethylene glycol, and propylene glycol.

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