Circulating cooling heat dissipation structure for power battery module of underwater vehicle and underwater vehicle

Abstract

The utility model belongs to the technical field of power batteries for underwater vehicles, and particularly relates to a circulating cooling heat dissipation structure for a power battery module of an underwater vehicle and the underwater vehicle. According to the heat dissipation structure, a cooling medium is circularly conveyed among the circulating cooling pump (3), the power battery module heat dissipation plate (2) and the annular water jacket (4); the cooling medium absorbs heat released during operation of the power battery module (1) when flowing through the power battery module radiating plate (2), and then is circularly conveyed to the annular water jacket (4) through the cooling pipeline (6); wherein the heat is conducted to the battery cabin section shell (5) through heat conduction between the annular water jacket (4) and the battery cabin section shell (5) and is finally discharged to the external environment. According to the heat dissipation structure, the battery temperature rise of the power battery module (1) is reduced, the temperature of a battery cabin of the underwater vehicle is reduced, and the running safety of the underwater vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to underwater vehicle power battery technical field, concretely relates to a kind of circulation cooling heat sink structure and underwater vehicle for underwater vehicle power battery module. BACKGROUND

[0002] At present, the power source of underwater vehicle is mainly driven by electric energy, and lithium battery has the advantages of high energy density and no memory effect, which is gradually applied to the power supply of underwater vehicle.

[0003] Lithium battery is combined by series and parallel connection to form a power battery module to supply power to underwater vehicle. To improve the space utilization of battery cabin, lithium batteries in the module are usually closely arranged. The battery has a certain internal resistance. When the underwater vehicle outputs large current power, the heat generated by the lithium battery internal resistance is large, which will cause heat accumulation and rapid temperature rise in a certain sealed space, affecting the safety of the power battery module itself, and also affecting the normal use of other cabin components of the underwater vehicle. More seriously, when the battery temperature reaches a certain limit, the power battery module may cause thermal runaway and explosion, which may affect the entire vehicle.

[0004] Therefore, it is crucial to reduce the temperature rise of the power battery and the module during the operation of the underwater vehicle power battery module. INVENTION CONTENTS

[0005] The utility model aims at overcoming the problem of high temperature rise of power battery module during the operation of underwater vehicle, and provides a circulation cooling heat sink structure for underwater vehicle power battery module and underwater vehicle.

[0006] To solve the above technical problems, the technical scheme of the utility model provides a circulation cooling heat sink structure for underwater vehicle power battery module. The underwater vehicle includes a battery cabin section shell 5 and at least one power battery module 1. The power battery module 1 is composed of several batteries arranged in the battery cabin section shell 5 of the underwater vehicle. The circulation cooling heat sink structure includes:

[0007] A power battery module heat sink 2 is wrapped around each battery of the power battery module 1, and a cooling medium channel is provided inside. The two ends are respectively provided with a heat sink liquid inlet 21 and a heat sink liquid outlet 22.

[0008] An annular water jacket 4 is installed on the inner wall of the battery cabin section shell 5. The annular water jacket 4 is provided with an annular water channel inside, and an inlet and an outlet are provided.

[0009] a circulating cooling pump 3, an outlet of which is connected to the inlet of the heat sink 21 through a cooling pipe 6, an outlet of the heat sink 22 is connected to the inlet of the annular water jacket 4 through the cooling pipe 6, and an outlet of the annular water jacket 4 is connected to the inlet of the circulating cooling pump 3 through the cooling pipe 6; and

[0010] a cooling pipe 6 for circulating and conveying the cooling medium between the circulating cooling pump 3, the heat sink 2 of the power battery module, and the annular water jacket 4; wherein,

[0011] the cooling medium absorbs the heat released by the power battery module 1 during operation when flowing through the heat sink 2 of the power battery module, and then is circulated and conveyed to the annular water jacket 4 through the cooling pipe 6; wherein, the heat is conducted to the battery cabin shell 5 through the heat conduction between the annular water jacket 4 and the battery cabin shell 5, and is finally discharged to the external environment.

[0012] As an improvement of the above structure, the projection of the heat sink 2 of the power battery module is S-shaped, and is inserted between any two adjacent batteries, wrapped around each battery of the power battery module 1, and closely attached to the side wall of each battery.

[0013] As an improvement of the above structure, the annular water jacket 4 is embedded and installed on the inner wall of the battery cabin shell 5.

[0014] As an improvement of the above structure, a heat-conducting medium is filled between the power battery module 1 and the heat sink 2 of the power battery module.

[0015] As an improvement of the above structure, a heat-conducting medium is filled or smeared between the annular water jacket 4 and the battery cabin shell 5.

[0016] As an improvement of the above structure, the heat-conducting medium includes heat-conducting silica gel.

[0017] As an improvement of the above structure, the underwater vehicle includes two or more power battery modules 1, the cooling pipe 6 includes a main pipe 8 and as many flexible branch pipes 7 as the number of power battery modules 1, one end of each branch pipe 7 is connected to the circulating cooling pump 3, and the other end is connected to the heat sink inlet 21 of the heat sink 2 of each power battery module 1; the main pipe 8 is connected to the heat sink outlet 22 of each battery module heat sink 2; the cooling medium is pumped by the circulating cooling pump 3 through each branch pipe 7 to each battery module heat sink 2, and the cooling medium after absorbing heat flows into the main pipe 8 from the heat sink outlet 22 of each battery module heat sink 2, converges and is conveyed to the annular water jacket 4 through the main pipe 8, and then flows into the circulating cooling pump 3.

[0018] As an improvement of the above structure, the underwater vehicle comprises two or more power battery modules 1, each of which is equipped with an independent circulating cooling heat dissipation structure.

[0019] As an improvement of the above structure, the two or more power battery modules 11 are arranged in an up-down manner, and an insulating resin plate is used for electrical isolation between two adjacent power battery modules 1, and shock-absorbing foam is used for buffering and shock absorption.

[0020] To achieve another object of the present application, the present application further provides an underwater vehicle comprising the circulating cooling heat dissipation structure for the power battery module of the underwater vehicle.

[0021] Compared with the prior art, the circulating cooling heat dissipation structure for the power battery module of the underwater vehicle and the underwater vehicle have the advantages that the power battery module heat dissipation plate 2 is arranged in the power battery module 1, and part of the heat generated during discharging of the power battery module 1 is guided out of the underwater vehicle battery cabin section in a circulating cooling heat dissipation manner, so that the battery temperature rise of the power battery module 1 can be greatly reduced, the temperature of the underwater vehicle battery cabin can be reduced, and the safety of the underwater vehicle operation can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 a top view of the circulating cooling heat dissipation structure for the power battery module of the underwater vehicle provided in the present application embodiment 1;

[0023] Figure 2 a top view of the power battery module heat dissipation plate 2;

[0024] Figure 3 a structure schematic view of a first setting mode of the circulating cooling heat dissipation structure for the power battery module of the underwater vehicle;

[0025] Figure 4 a structure schematic view of a second setting mode of the circulating cooling heat dissipation structure for the power battery module of the underwater vehicle. DETAILED DESCRIPTION

[0026] The technical solutions provided by the present application are further described below in combination with embodiments.

[0027] Embodiment 1

[0028] The circulating cooling heat dissipation structure for the power battery module of the underwater vehicle is described in detail in this embodiment.

[0029] The underwater vehicle comprises a battery cabin section shell 5 and at least one power battery module 1; the power battery module 1 is composed of a plurality of batteries arranged and placed inside the battery cabin section shell 5 of the underwater vehicle.

[0030] As shown in Figure 1 , the circulating cooling heat dissipation structure mainly comprises: a power battery module heat dissipation plate 2, a circulating cooling pump 3, a ring-shaped water jacket 4, a cooling pipeline 6 and a cooling medium. Each component is connected through the cooling pipeline 6, that is, the cooling pipeline 6 is used for circulating and conveying the cooling medium between the circulating cooling pump 3, the power battery module heat dissipation plate 2 and the ring-shaped water jacket 4. The circulating cooling pump 3 drives the cooling medium to flow through the power battery module heat dissipation plate 2 and the ring-shaped water jacket 4 in turn. The circulating cooling heat dissipation structure conducts the heat generated by the power battery module 1 during operation to the sea through heat conduction. Specifically, the cooling medium absorbs the heat released by the power battery module 1 when flowing through the power battery module heat dissipation plate 2, and then is circulated and conveyed to the ring-shaped water jacket 4 through the cooling pipeline 6; wherein the heat is conducted to the battery cabin section shell 5 through heat conduction between the ring-shaped water jacket 4 and the battery cabin section shell 5 and is finally discharged to the external environment.

[0031] As shown in Figure 2 , the power battery module heat dissipation plate 2 is in an S-shaped structure, as shown in Figure 1 , which is inserted between any two adjacent batteries and wrapped around the batteries of the power battery module 1, and a heat-conducting medium is filled between the batteries and the power battery module heat dissipation plate 2 to improve the heat conduction between the batteries and the power battery module heat dissipation plate 2. The heat of the battery is transferred to the power battery module heat dissipation plate 2 by heat conduction. The power battery module heat dissipation plate 2 is internally provided with a cavity as a cooling medium channel. The two ends of the S-shaped power battery module heat dissipation plate 2 are provided with a heat dissipation plate liquid inlet 21 and a heat dissipation plate liquid outlet 22.

[0032] The ring-shaped water jacket 4 is internally provided with a ring-shaped water channel, and is provided with one liquid inlet and one liquid outlet. The cooling liquid enters the ring-shaped water jacket 4 through the liquid inlet of the ring-shaped water jacket 4 and flows out of the ring-shaped water jacket 4 through the liquid outlet of the ring-shaped water jacket 4.

[0033] The ring-shaped water jacket 4 is embedded and installed on the inner wall of the battery cabin section shell 5. The outer wall of the ring-shaped water jacket 4 is tightly connected with the inner wall of the battery cabin section shell 5, and preferably, a heat-conducting medium is filled or applied on the connecting surface to improve the heat conduction between the ring-shaped water jacket 4 and the battery cabin section shell.

[0034] The outlet of the circulating cooling pump 3 is connected to the heat dissipation plate liquid inlet 21 through the cooling pipeline 6, the heat dissipation plate liquid outlet 22 is connected to the liquid inlet of the ring-shaped water jacket 4 through the cooling pipeline 6, and the liquid outlet of the ring-shaped water jacket 4 is connected to the water inlet of the circulating cooling pump 3 through the cooling pipeline 6.

[0035] The connection sequence of each component is as follows: the outlet of the circulating cooling pump 3 is flexibly connected to the inlet 21 of the heat sink 2 of the power battery module heat sink 2 through the cooling pipe 6; the outlet 22 of the heat sink 2 of the power battery module heat sink 2 is flexibly connected to the inlet of the annular water jacket 4 through the cooling pipe 6; and the outlet of the annular water jacket 4 is flexibly connected to the inlet of the circulating cooling pump 3.

[0036] Preferably, each power battery module 1 is electrically isolated from the top and bottom by an insulating resin board, and is cushioned and damped by shock-absorbing foam.

[0037] Preferably, the cooling medium includes water cooling medium and oil cooling medium.

[0038] When an underwater vehicle is equipped with two or more power battery modules 1, the circulating cooling and heat dissipation structure includes at least the following two configuration methods.

[0039] The first setting method: (e.g.) Figure 1 As shown, the cooling and heat dissipation structure of the power battery module 1 includes: a power battery module heat sink 2, a circulating cooling pump 3, an annular water jacket 4, and a circulating water circuit. (Projected as shown) Figure 1 As shown, the power battery module heat sink 2 adopts an S-shaped structure to cover each battery of the power battery module 1. A thermally conductive medium, such as thermally conductive silicone, is added between the outer surface of each battery and the power battery module heat sink 2. The annular water jacket 4 is tightly fitted with the battery compartment shell 5 of the aircraft, and each power battery module 1 is located in the middle of the annular water jacket 4. The cooling circulation pump drives the coolant into the power battery module heat sink 2. The coolant carries away the heat absorbed by the power battery module heat sink 2. The heat enters the annular water jacket 4 with the coolant, and through heat conduction between the annular water jacket 4 and the battery compartment shell 5, the heat is finally discharged to the sea.

[0040] Each power battery module 1 is equipped with a cooling and heat dissipation structure. The power battery modules 1 are stacked vertically, and connected in series via copper busbars to ultimately form the underwater vehicle's power battery system. Figure 3 As shown.

[0041] The second setting method: (e.g.) Figure 4 As shown, unlike the first setup, this setup uses a water cooling system with a circulating cooling pump 3. It is connected to the heat sink 2 of each power battery module through a branch pipe 7, and then the coolant is introduced into the annular water jacket 4 through the main pipe 8. The annular water jacket 4 is tightly connected to the shell 5 of the vehicle's battery compartment, and the heat of the power battery module 1 is conducted to the outside of the vehicle's battery compartment through heat conduction.

[0042] Example 2

[0043] The embodiment provides a kind of underwater vehicle, including the circulation cooling heat dissipation structure of power battery module for underwater vehicle provided in embodiment 1.

[0044] From the above specific description of the utility model, the utility model provided for the power battery module circulation cooling heat dissipation structure for underwater vehicle and underwater vehicle have the following advantages:

[0045] Efficient heat dissipation: by adopting S-shaped battery module heat dissipation plate and annular water jacket design, combined with the circulation flow of cooling medium, the heat generated during battery operation can be quickly exported efficiently.Surrounding the heat dissipation plate and battery module are filled with heat-conducting medium, further improving the heat conduction efficiency, ensuring the stable operation of battery under high load condition.

[0046] Compact structure: the heat dissipation plate surrounds the battery module, and the annular water jacket is embedded in the inner wall of the battery cabin section shell, so that the cooling structure is highly integrated, saves space, and is especially suitable for underwater vehicle with limited space.

[0047] Enhanced safety: insulation resin plate is used for electrical isolation, and shock-absorbing foam is used for shock absorption, effectively reducing the vibration and collision risk of battery system, improving safety and durability.

[0048] Strong adaptability: cooling medium can be selected as water or oil, to adapt to different underwater environment requirements; flexible cooling pipeline connection mode is convenient for installation and maintenance.

[0049] Modular design: each battery module is configured with independent cooling structure, and is connected in series through copper bar to form a complete system, which is convenient for expansion and unit replacement, improves system flexibility and maintainability.

[0050] In summary, the technical scheme integrates efficient heat dissipation, structure optimization, safety and reliability, and flexibility and adaptability, which can significantly improve the operation performance and service life of underwater vehicle power battery.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited. Although the utility model is described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the utility model, which should be covered in the scope of the claims of the utility model.

Claims

1. A circulating cooling and heat dissipation structure for a power battery module of an underwater vehicle, the underwater vehicle comprising a battery compartment shell (5) and at least one power battery module (1); the power battery module (1) is composed of a plurality of batteries arranged and placed inside the battery compartment shell (5) of the underwater vehicle; characterized in that, include: The power battery module heat sink (2) covers each battery of the power battery module (1), and has a cooling medium channel inside. The two ends are respectively provided with a heat sink inlet (21) and a heat sink outlet (22). An annular water jacket (4) is installed on the inner wall of the battery compartment housing (5). The annular water jacket (4) has an annular water channel inside and is provided with an inlet and an outlet. The outlet of the circulating cooling pump (3) is connected to the inlet (21) of the heat sink plate through the cooling pipe (6), the outlet (22) of the heat sink plate is connected to the inlet of the annular water jacket (4) through the cooling pipe (6), and the outlet of the annular water jacket (4) is connected to the inlet of the circulating cooling pump (3) through the cooling pipe (6). and Cooling pipe (6) is used to circulate and transport the cooling medium between the circulating cooling pump (3), the power battery module heat sink (2), and the annular water jacket (4); wherein, The cooling medium absorbs the heat released by the power battery module (1) during operation when it flows through the heat sink plate (2) of the power battery module, and then circulates to the annular water jacket (4) through the cooling pipe (6); wherein, the heat is conducted to the battery compartment shell (5) through the heat conduction between the annular water jacket (4) and the battery compartment shell (5) and is finally discharged to the external environment.

2. The circulating cooling and heat dissipation structure for the power battery module of an underwater vehicle according to claim 1, characterized in that, The projection of the power battery module heat sink (2) is S-shaped, interspersed between any two adjacent batteries, surrounding and covering each battery of the power battery module (1), and closely attached to the side wall of each battery.

3. The circulating cooling and heat dissipation structure for the power battery module of an underwater vehicle according to claim 1, characterized in that, The annular water jacket (4) is embedded in the inner wall of the battery compartment housing (5).

4. The circulating cooling and heat dissipation structure for the power battery module of an underwater vehicle according to claim 1, characterized in that, The space between the power battery module (1) and the power battery module heat sink (2) is filled with a heat-conducting medium.

5. The circulating cooling and heat dissipation structure for the power battery module of an underwater vehicle according to claim 1, characterized in that, The annular water jacket (4) and the battery compartment shell (5) are filled or coated with a heat-conducting medium.

6. The circulating cooling and heat dissipation structure for a power battery module of an underwater vehicle according to claim 4 or 5, characterized in that, The thermally conductive medium includes: thermally conductive silicone.

7. The circulating cooling and heat dissipation structure for the power battery module of an underwater vehicle according to claim 1, characterized in that, The underwater vehicle includes two or more power battery modules (1). The cooling pipe (6) includes a main pipe (8) and a number of flexible branch pipes (7) equal to the number of power battery modules (1). One end of each branch pipe (7) is connected to a circulating cooling pump (3), and the other end is connected to the heat sink inlet (21) of the heat sink plate (2) of each power battery module (1). The main pipe (8) is connected to the heat sink outlet (22) of each battery module heat sink plate (2). The cooling medium is pumped by the circulating cooling pump (3) to each battery module heat sink plate (2) through each branch pipe (7). After absorbing heat, the cooling medium flows from the heat sink outlet (22) of each battery module heat sink plate (2) into the main pipe (8), converges through the main pipe (8) and is transported to the annular water jacket (4), and then flows into the circulating cooling pump (3).

8. The circulating cooling and heat dissipation structure for the power battery module of an underwater vehicle according to claim 1, characterized in that, The underwater vehicle includes two or more power battery modules (1), each of which is equipped with an independent circulating cooling heat dissipation structure.

9. The circulating cooling and heat dissipation structure for a power battery module of an underwater vehicle according to claim 7 or 8, characterized in that, The two or more power battery modules (1) are arranged vertically, and the two adjacent power battery modules (1) are electrically isolated by an insulating resin board and buffered by shock-absorbing foam.

10. An underwater vehicle, characterized in that, Includes the circulating cooling and heat dissipation structure for the power battery module of an underwater vehicle as described in any one of claims 1-9.

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