Double-sealed lithium battery system structure for engineering locomotives

Abstract

The utility model discloses a double-layer sealed engineering locomotive lithium battery system structure, which belongs to the technical field of lithium-ion power batteries, including a main box body, a main box cover is provided on the outside of the main box body, a first sealing structure is provided between the main box body and the main box cover, a battery area and an electric control area are provided inside the main box body, the battery area and the electric control area are separated from each other, a plurality of boxes are provided in the battery area, a box cover is provided on the top of the box body, a second sealing structure is provided inside the box body, and the box cover is bent and buckled on the second sealing structure of the box body. By improving the box body structure and the sealing structure, the structure is completely sealed, and the faults in the electrical control area and the standard box area will not affect each other after the battery system is opened, so that water vapor can be prevented from entering the engineering locomotive lithium battery system, and various faults and after-sales problems caused by water ingress into the system can be avoided, thereby improving the user experience.

Description

Technical Field

[0001] The utility model relates to a double-layer sealed lithium battery system structure for an engineering locomotive, belonging to the technical field of lithium-ion power batteries. Background Art

[0002] In recent years, lithium-ion batteries have been widely used in new energy engineering locomotives due to their advantages such as safety, environmental protection, high energy density, fast charging rate, long service life, and low self-discharge. Due to the complex operating conditions and high environmental humidity, the locomotive lithium battery system has many problems such as poor insulation due to water ingress and moisture in the battery management system, resulting in increasingly serious battery after-sales service problems. After-sales personnel can only temporarily solve the problem by replacing faulty parts and drying the inside of the battery, but cannot completely seal the entire battery system to prevent the problem from happening again, and cannot solve the problem from the root. Therefore, how to design a locomotive lithium battery system structure with good sealing performance has become a technical problem that urgently needs to be solved. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a double-layer sealed engineering locomotive lithium battery system structure, which can prevent water vapor from entering the engineering locomotive lithium battery system, avoid various faults and after-sales problems caused by water ingress into the system, and improve the user experience.

[0004] The double-layer sealed engineering locomotive lithium battery system structure described in the utility model includes a main box body, a main box cover is provided on the outside of the main box body, a first sealing structure is provided between the main box body and the main box cover, the main box cover has bent and buckled edges on all sides and is buckled on the first sealing structure of the main box body, a battery area and an electronic control area are provided inside the main box body, the battery area and the electronic control area are separated from each other, a plurality of boxes are provided in the battery area, a box cover is provided above the box body, a second sealing structure is provided inside the box body, the box cover has bent and buckled edges on all sides and is buckled on the second sealing structure of the box body.

[0005] Furthermore, the first sealing structure includes a first sealing strip and a first sealing adhesive, and the first sealing strip and the first sealing adhesive are adhered to the sealing surface of the main box body.

[0006] Furthermore, the second sealing structure includes a second sealing strip and a second sealing adhesive, and the second sealing strip and the second sealing adhesive are adhered to the sealing surface of the box body.

[0007] Furthermore, the main tank cover includes main tank cover A, main tank cover B and main tank cover C. The main tank cover A, main tank cover B and main tank cover C are connected to the main tank body by a first bolt. After the first sealing structure is pasted on the sealing surface of the main tank body, the main tank cover A, main tank cover B and main tank cover C are installed and fixed with the first bolt.

[0008] Furthermore, the upper edge of the main box body is divided into three parts, and a U-shaped groove is opened between the three parts, and the U-shaped groove is used to install the main box cover A, the main box cover B and the main box cover C.

[0009] Furthermore, a vertical plate is provided between the battery area and the electric control area in the main box, which separates the two areas into two areas that do not interfere with each other.

[0010] Furthermore, after the box is assembled, it is installed in the main box, and a limit block for achieving the limit of the box is provided in the main box.

[0011] Furthermore, a second bolt is connected between the box cover and the box body, and after the second sealing structure is pasted on the sealing surface of the box body, the box cover is installed and fixed with the second bolt.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The double-layer sealed engineering locomotive lithium battery system structure described in the utility model realizes complete sealing of the structure by improving the box structure and the sealing structure. The upper edge of the box is bent, and the sealing surface is increased as much as possible without increasing the overall dimensions. After the sealing strip is pasted on the sealing surface and the sealant is applied, the box cover is installed and fixed with bolts; after the standard box is assembled, it is installed in the designated area of ​​the main box body, and the position is limited by the limit block, and there is a vertical plate between the standard box area and the electrical control area for separation; the upper edge of the main box body is divided into three parts, and a U-shaped groove is opened between the three parts. The upper edge of the main box body widens the sealing surface, and after the sealing strip is pasted on the sealing surface and the sealant is applied, the main box cover A, the main box cover B, and the main box cover C are installed and fixed with bolts. When the battery has problems in the later stage and is repaired, the faults in the electrical control area and the standard box area can not affect each other after opening the battery system. When a box fails and the cover is opened for maintenance, the sealing structure of other boxes can also be not destroyed, and the workload is reduced. It can avoid water vapor from entering the lithium battery system of the engineering locomotive, avoid various faults and after-sales problems caused by water in the system, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the external structure diagram of the overall structure of the double-layer sealed engineering locomotive lithium battery system of the utility model;

[0015] Figure 2 This is the internal structure diagram of the overall structure of the double-layer sealed engineering locomotive lithium battery system of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the box in the double-layer sealed engineering locomotive lithium battery system structure of the utility model;

[0017] Figure 4 It is a cross-sectional view of the main box body in the double-layer sealed engineering locomotive lithium battery system structure of the utility model;

[0018] Figure 5 It is a cross-sectional view of the box in the double-layer sealed engineering locomotive lithium battery system structure of the utility model;

[0019] In the figure: 1. main tank cover A; 2. main tank cover B; 3. main tank cover C; 4. main tank body; 5. vertical plate; 6. tank body; 7. limit block; 8. tank cover; 9. first sealing strip; 10. first sealant; 11. first bolt; 12. second sealant, 13. second bolt; 14. second sealing strip. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Embodiment 1:

[0022] like Figure 1-5 As shown, the double-layer sealed engineering locomotive lithium battery system structure described in the utility model includes a main box body 4, a main box cover is provided on the outside of the main box body 4, a first sealing structure is provided between the main box body 4 and the main box cover, the main box cover has bent and buckled edges all around and is buckled on the first sealing structure of the main box body 4, a battery area and an electronic control area are provided inside the main box body 4, the battery area and the electronic control area are separated from each other, a plurality of boxes 6 are provided in the battery area, a box cover 8 is provided above the box body 6, a second sealing structure is provided inside the box body 6, the box cover 8 has bent and buckled edges all around and is buckled on the second sealing structure of the box body.

[0023] The first sealing structure includes a first sealing strip 9 and a first sealing adhesive 10 , and the first sealing strip 9 and the first sealing adhesive 10 are adhered to the sealing surface of the main box body 4 .

[0024] The second sealing structure includes a second sealing strip 14 and a second sealing adhesive 12 , and the second sealing strip 14 and the second sealing adhesive 12 are adhered to the sealing surface of the box body 6 .

[0025] The main tank cover includes main tank cover A1, main tank cover B2 and main tank cover C3. The main tank cover A1, main tank cover B2 and main tank cover C3 are connected to the main tank body 4 by a first bolt 11. After the first sealing structure is pasted on the sealing surface of the main tank body 4, the main tank cover A1, main tank cover B2 and main tank cover C3 are installed and fixed with the first bolt 11.

[0026] The upper edge of the main tank body 4 is divided into three parts, and a U-shaped groove is provided between the three parts. The U-shaped groove is used to install the main tank cover A1, the main tank cover B2 and the main tank cover C3.

[0027] After the box body 6 is assembled, it is installed in the main box body 4 , and a limiting block 7 for limiting the box body 6 is provided in the main box body 4 .

[0028] A second bolt 13 is connected between the box cover 8 and the box body 6 . After a second sealing structure is pasted on the sealing surface of the box body 6 , the box cover 8 is installed and fixed with the second bolt 13 .

[0029] The specific application of this embodiment is:

[0030] like Figure 1 As shown, the upper edge of the overall box body 4 is divided into three parts to reduce the size of the box cover and reduce the processing error. The upper edges of each part are connected as shown in FIG. Figure 4 The U-shaped groove shown in the figure has its upper edge extending toward the outside of the main box body 4 to increase the sealing surface, and the sealing surface is pasted Figure 4 In the first sealing strip 9, apply Figure 4 The first sealant 10. Figure 4 The middle tank cover A1 and the tank cover B2 are fastened to the tank body 4 by means of the first bolts 11, thus serving as an external sealing layer.

[0031] like Figure 2 As shown, the main box body 4 is divided into two non-interfering areas by the vertical plate 5, in which multiple boxes 6 are installed in one area and are limited by the limit blocks 7, and the control electrical components of the engineering locomotive lithium battery system are installed in the other area.

[0032] exist Figure 3 The battery and the corresponding management system are installed in the middle box 6, and the upper sealing surface is adopted as follows Figure 5 The three-fold bending structure shown above forms a larger sealing surface without increasing the overall dimensions. Figure 5 In the second sealing strip 12, apply on the second sealing strip 10 Figure 5 The second sealant 12 is provided. Figure 5 The middle box cover 8 is fastened to the box body 6 by the second bolt 13, which plays a role of internal sealing.

[0033] When the battery has problems at a later stage and needs to be repaired, the faults in the electrical control area and the standard box area will not affect each other after the battery system is opened. When a box 6 fails and the cover is opened for maintenance, the sealing structure of other boxes 6 will not be damaged, and the workload will be reduced.

[0034] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The double-layer sealed engineering locomotive lithium battery system structure of the embodiment of the utility model described above in combination with the drawings is used, and the box structure and the sealing structure are improved to achieve complete sealing of the structure, which can prevent water vapor from entering the engineering locomotive lithium battery system, avoid various failures and after-sales problems caused by water entering the system, and improve the user experience. However, the utility model is not limited to the described implementation methods, and these changes, modifications, replacements and deformations of the implementation methods without departing from the principles and spirit of the utility model still fall within the protection scope of the utility model.

Claims

1. A double-sealed engineering locomotive lithium battery system structure, characterized by: The invention comprises a main box body (4), a main box cover is arranged outside the main box body (4), a first sealing structure is arranged between the main box body (4) and the main box cover, the main box cover has bent and buckled edges on all sides and is buckled on the first sealing structure of the main box body (4), a battery area and an electric control area are arranged inside the main box body (4), the battery area and the electric control area are separated from each other, a plurality of boxes (6) are arranged in the battery area, a box cover (8) is arranged above the box body (6), a second sealing structure is arranged inside the box body (6), the box cover (8) has bent and buckled edges on all sides and is buckled on the second sealing structure of the box body (6).

2. The double-sealed engineering locomotive lithium battery system structure according to claim 1 is characterized in that: The first sealing structure comprises a first sealing strip (9) and a first sealing adhesive (10), and the first sealing strip (9) and the first sealing adhesive (10) are adhered to the sealing surface of the main box body (4).

3. The double-sealed engineering locomotive lithium battery system structure according to claim 1 is characterized in that: The second sealing structure comprises a second sealing strip (14) and a second sealing adhesive (12), and the second sealing strip (14) and the second sealing adhesive (12) are adhered to the sealing surface of the box body (6).

4. The double-sealed engineering locomotive lithium battery system structure according to claim 1 is characterized in that: The main tank cover comprises a main tank cover A (1), a main tank cover B (2) and a main tank cover C (3); a first bolt (11) is connected between the main tank cover A (1), the main tank cover B (2) and the main tank cover C (3) and the main tank body (4); after a first sealing structure is pasted on the sealing surface of the main tank body (4), the main tank cover A (1), the main tank cover B (2) and the main tank cover C (3) are installed and fixed with the first bolt (11).

5. The double-sealed engineering locomotive lithium battery system structure according to claim 4 is characterized in that: The upper edge of the main box body (4) is divided into three parts, and a U-shaped groove is provided between the three parts. The U-shaped groove is used to install the main box cover A (1), the main box cover B (2) and the main box cover C (3).

6. The double-sealed engineering locomotive lithium battery system structure according to claim 1 is characterized in that: A vertical plate (5) is provided between the battery area and the electric control area in the main box body (4), and the vertical plate (5) separates the battery area and the electric control area into two areas that do not interfere with each other.

7. The double-sealed engineering locomotive lithium battery system structure according to claim 1 is characterized in that: A limiting block (7) for limiting the position of the box body (6) is arranged inside the main box body (4).

8. The double-sealed engineering locomotive lithium battery system structure according to claim 1 is characterized in that: A second bolt (13) is connected between the box cover (8) and the box body (6); after a second sealing structure is pasted on the sealing surface of the box body (6), the box cover (8) is installed and fixed with the second bolt (13).

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