Sealed battery PACK box

Abstract

The utility model discloses a sealed battery PACK box in the field of battery PACK boxes, which comprises a box body and a top cover plate, the box body is formed by fully welding four side seams of a whole metal plate, the top cover plate is mounted on the top surface of the box body through screws, a baffle plate tightly attached to the inner wall of the box body is welded inside the box body, an O-shaped ring limiting clamping plate is arranged on the top surface of the box body, and the O-shaped ring limiting clamping plate is arranged on the top surface of the box body. The O-shaped ring limiting clamping plate surrounds the box body and is welded to the box body, an O-shaped ring is clamped between the baffle and the O-shaped ring limiting clamping plate, and the surface of the O-shaped ring and the inner wall of the top cover plate are sealed; according to the sealed battery PACK box disclosed by the utility model, the box body and the top cover plate are provided with the baffle plate, the O-shaped ring limiting clamping plate and the O-shaped ring to form a sealing structure, and the baffle plate, the O-shaped ring limiting clamping plate and the O-shaped ring are connected in a clamping manner, so that the O-shaped ring can be prevented from being extruded and deviated, and the battery PACK box is ensured to have good sealing performance.

Description

Technical Field

[0001] The utility model relates to the field of battery PACK boxes, in particular to a sealed battery PACK box. Background Art

[0002] The battery PACK box is a battery packaging container, which is mainly used for the packaging and protection of power batteries. The battery PACK box is a container that packages and protects multiple battery cells (or battery modules) in series and parallel in a certain way. It not only contains the battery unit itself, but also includes the necessary protection circuit module (PCM board) and other supporting equipment to ensure the safe and efficient operation of the battery. One of the main functions of the sealed battery PACK box is to prevent the leakage of liquid inside the box. The liquid in the power battery is very harmful. If it leaks into the external environment, it will not only threaten personal safety, but also pollute the surrounding equipment and environment. Therefore, rubber sealing plates are usually used to seal the box.

[0003] However, there are problems with poor sealing effect and poor sealing when sealing the box body with a rubber sealing plate. Cracks are prone to occur in the rubber sealing plate during production, installation or use. Due to material fatigue, mechanical damage or environmental factors, obvious cracks may appear on the inner and outer surfaces or other surfaces. These cracks will destroy its sealing. The rubber sealing plate and the top cover of the PACK box may be separated from the rubber and the frame due to material incompatibility, adhesive failure or improper installation. The rubber cannot be tightly bonded together and is prone to debonding, which in turn affects its sealing performance. There may be obvious raised and spherical bubbles on the surface of the rubber sealing plate. These bubbles not only affect the appearance quality, but may also destroy the continuity of the sealing surface and reduce its sealing performance. Therefore, the use of rubber sealing plates for sealing has the problem of poor sealing. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art solutions, the utility model provides a sealed battery PACK box, which can effectively solve the technical problem that the current battery PACK box is sealed with a rubber sealing plate, resulting in poor sealing.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a sealed battery PACK box, including a box body formed by fully welding four side seams of a whole sheet metal and a top cover plate installed on the top surface of the box body by screws, a baffle plate tightly attached to the inner wall of the box body is welded inside the box body, an O-ring limiting card plate is arranged on the top surface of the box body, the O-ring limiting card plate surrounds the box body and is welded to the box body, an O-ring is clamped between the baffle plate and the O-ring limiting card plate, and the surface of the O-ring is sealed with the inner wall of the top cover plate.

[0006] Furthermore, a positive interface and a negative interface are respectively provided on the surface of the box body, the positive interface and the negative interface are symmetrically arranged, the positive interface is installed with a positive terminal by screws, and the negative interface is installed with a negative terminal by screws.

[0007] Furthermore, the surface of the box body is provided with an oil filling port and a pressure relief port which are connected to the interior of the box body, the oil filling port is provided at one end of the bottom of the box body, and the pressure relief port is provided at one end close to the positive interface, the oil filling port is sealed with a gasket and is provided with an oil filling port ball valve, and the pressure relief port is sealed with a gasket and is provided with a pressure relief port ball valve.

[0008] Furthermore, two air-conditioning gas-liquid pipe interfaces communicating with the interior of the box are arranged on the surface of the box, and adjacent air-conditioning gas-liquid pipe interfaces are symmetrically distributed. The air-conditioning gas-liquid pipe interfaces are used to achieve corresponding connection with the gas-liquid pipes of the external air-conditioning body.

[0009] Furthermore, two BMS mounting plates are arranged on the surface of the box, and the adjacent BMS mounting plates are symmetrically distributed. The BMS is mounted on the surface of the BMS mounting plates by screws.

[0010] Furthermore, a BMS sampling line interface is provided on the surface of the box, and a BMS sampling line terminal is installed on the BMS sampling line interface by means of screws.

[0011] Furthermore, a reinforcing beam is fixedly provided on the side of the box body, and the reinforcing beam is arranged along the length direction of the box body. A plurality of lifting holes are provided on the surface of the reinforcing beam, and the plurality of lifting holes are distributed at intervals. The lifting holes are used to realize the lifting and displacement of the box body. A plurality of pulleys are provided on the surface of the reinforcing beam, and the pulleys are used to realize the sliding of the box body.

[0012] Furthermore, two lifting ring installation openings are arranged on the surface of the box body, the two lifting ring installation openings are arranged symmetrically, and guide pin assemblies are respectively arranged inside the two lifting ring installation openings.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is a sealed battery PACK box, in which the box body and the top cover plate form a sealing structure by arranging a baffle, an O-ring limiting card plate and an O-ring, and the clamping design between the baffle, the O-ring limiting card plate and the O-ring can prevent the O-ring from being squeezed and moving, thereby ensuring that the battery PACK box has good sealing performance and strong sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of a sealed battery PACK box of the utility model;

[0015] Figure 2 This is an exploded view of a sealed battery PACK box of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a sealed battery PACK box of the utility model;

[0017] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0018] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0019] Figure 6 This is a cross-sectional view of a sealed battery PACK box of the utility model;

[0020] Figure 7 for Figure 6 A partial enlarged view of point C in the middle.

[0021] Numbers in the figure:

[0022] 1- box body; 2- top cover plate; 3- BMS sampling line terminal; 4- BMS sampling line interface; 5- BMS mounting plate; 6- BMS; 7- positive interface; 8- positive terminal; 9- negative interface; 10- negative terminal; 11- air-conditioning gas-liquid pipe interface; 12- oil filling port; 13- oil filling port ball valve; 14- pressure relief port; 15- pressure relief port ball valve; 16- reinforcement beam; 17- lifting ring installation port; 18- lifting hole; 19- pulley; 20- guide pin assembly; 21- baffle; 22- O-ring; 23- O-ring limit card. DETAILED DESCRIPTION

[0023] 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 without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-Figure 7As shown, a sealed battery PACK box includes a box body 1 formed by fully welding four side seams of a whole sheet metal and a top cover plate 2 installed on the top surface of the box body 1 by screws, a baffle 21 close to the inner wall of the box body 1 is welded inside the box body 1, an O-ring limiting card plate 23 is arranged on the top surface of the box body 1, the O-ring limiting card plate 23 surrounds the box body 1 and is welded to the box body 1, an O-ring 22 is clamped between the baffle 21 and the O-ring limiting card plate 23, the surface of the O-ring 22 is sealed with the inner wall of the top cover plate 2, wherein the interior of the box body 1 is a hollow structure, filled with coolant, and the IP grade reaches IP68, the internal coolant is used to achieve cooling, the internal coolant is connected to an oil pump through the conductive oil filling port 14 and the oil filling port ball valve 15 to achieve the effect of oil circulation cooling, and the interior of the box body 1 is also provided with a battery cell body for power supply.

[0025] The surface of the box body 1 is respectively provided with a positive interface 7 and a negative interface 9, and the positive interface 7 and the negative interface 9 are symmetrically arranged. The positive interface 7 is installed with a positive terminal 8 by screws, and the negative interface 9 is installed with a negative terminal 10 by screws. By connecting the positive terminal 8 and the negative terminal 10, an external device is connected to supply power to the external device.

[0026] The surface of the box body 1 is provided with an oil filling port 12 and a pressure relief port 14 which are connected to the interior of the box body 1. The oil filling port 12 is provided at one end of the bottom of the box body 1, and the pressure relief port 14 is provided at one end close to the positive interface 7. The oil filling port 12 is sealed with a gasket and is provided with an oil filling port ball valve 13, and the pressure relief port 14 is sealed with a gasket and is provided with a pressure relief port ball valve 15. Coolant is injected into the interior of the box body 1 through the oil filling port 12 and the oil filling port ball valve 13, and the internal coolant can also be discharged through the oil filling port 12 and the oil filling port ball valve 13. In addition, the oil filling port ball valve 13 can be controlled to open or close for oil drainage / oil filling during PACK box maintenance. The pressure relief port 14 of the PACK box is installed with a pressure relief port ball valve 15, and the copper pipe of the pressure relief port ball valve 15 is connected to the external pressure relief main pipe, which plays a role in balancing the pressure inside and outside the box body 1 and relieves pressure when the battery cell body inside the box body 1 is thermally runaway, thereby preventing the risk of the box body 1 bursting due to excessive pressure.

[0027] The surface of the box body 1 is provided with two air-conditioning gas-liquid pipe interfaces 11 which are connected with the inside of the box body 1, and the adjacent air-conditioning gas-liquid pipe interfaces 11 are symmetrically distributed. The air-conditioning gas-liquid pipe interfaces 11 are used to achieve corresponding connection with the external air-conditioning main body gas-liquid pipe, so as to provide appropriate cooling for the battery cells inside the box body 1 and keep the battery cells within the optimal operating temperature range. When in use, the external air-conditioning main body gas-liquid pipe serves as the input end, and the air-conditioning gas-liquid pipe interface 11 serves as the output end, and the external air-conditioning refrigerant is input into the internal evaporator of the box body 1 through the air-conditioning gas-liquid pipe interface 11, and heat exchange is performed through the coolant.

[0028] Two BMS mounting plates 5 are provided on the surface of the box 1, and adjacent BMS mounting plates 5 are symmetrically distributed. BMS 6 is installed on the surface of the BMS mounting plates 5 by screws. BMS 6 is used to install an external BMS slave to facilitate the installation of the BMS slave. A BMS sampling line interface 4 is provided on the surface of the box 1. BMS sampling line terminals 3 are installed on the BMS sampling line interface 4 by screws. The voltage and current inside the box 1 are measured and monitored through the BMS sampling line terminals 3.

[0029] A reinforcing beam 16 is fixedly provided on the side of the box body 1, and the reinforcing beam 16 is arranged along the length direction of the box body 1. A plurality of hoisting holes 18 are provided on the surface of the reinforcing beam 16, and the plurality of hoisting holes 18 are distributed at intervals. The hoisting holes 18 are used to realize the hoisting and displacement of the box body 1. A plurality of pulleys 19 are provided on the surface of the reinforcing beam 16, and the pulleys 19 are used to realize the sliding of the box body 1. Two lifting ring installation openings 17 are provided on the surface of the box body 1, and the two lifting ring installation openings 17 are symmetrically arranged, and guide pin assemblies 20 are respectively provided inside the two lifting ring installation openings 17.

[0030] In the sealed battery PACK box of the present embodiment, the box body 1 and the top cover plate 2 form a sealing structure by arranging a baffle 21, an O-ring limiting card plate 23 and an O-ring 22. The clamping design between the baffle 21, the O-ring limiting card plate 23 and the O-ring 22 can prevent the O-ring 22 from being squeezed and moving, thereby ensuring that the battery PACK box has good sealing performance.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A sealed battery PACK box, comprising a box body formed by fully welding four sides of a whole sheet of metal and a top cover plate installed on the top surface of the box body by screws, characterized in that: A baffle plate tightly attached to the inner wall of the box body is welded inside the box body, an O-ring limiting card plate is arranged on the top surface of the box body, the O-ring limiting card plate surrounds the box body and is welded to the box body, an O-ring is clamped between the baffle plate and the O-ring limiting card plate, and the surface of the O-ring is sealed with the inner wall of the top cover plate.

2. A sealed battery PACK box according to claim 1, characterized in that: The surface of the box is respectively provided with a positive interface and a negative interface, the positive interface and the negative interface are symmetrically arranged, the positive interface is installed with a positive terminal by screws, and the negative interface is installed with a negative terminal by screws.

3. A sealed battery PACK box according to claim 2, characterized in that: The surface of the box body is provided with an oil filling port and a pressure relief port which are connected to the interior of the box body. The oil filling port is provided at one end of the bottom of the box body, and the pressure relief port is provided at one end close to the positive interface. The oil filling port is sealed with a gasket and is provided with an oil filling port ball valve, and the pressure relief port is sealed with a gasket and is provided with a pressure relief port ball valve.

4. A sealed battery PACK box according to claim 1, characterized in that: The surface of the box is provided with two air-conditioning gas-liquid pipe interfaces which are connected with the inside of the box, and the adjacent air-conditioning gas-liquid pipe interfaces are symmetrically distributed. The air-conditioning gas-liquid pipe interfaces are used to realize corresponding connection with the gas-liquid pipes of the external air-conditioning body.

5. A sealed battery PACK box according to claim 1, characterized in that: Two BMS mounting plates are arranged on the surface of the box body, and the adjacent BMS mounting plates are symmetrically distributed. The BMS is mounted on the surface of the BMS mounting plates by screws.

6. A sealed battery PACK box according to claim 1, characterized in that: A BMS sampling line interface is provided on the surface of the box, and a BMS sampling line terminal is installed on the BMS sampling line interface through screws.

7. A sealed battery PACK box according to any one of claims 1 to 6, characterized in that: A reinforcing beam is fixedly provided on the side of the box body, and the reinforcing beam is arranged along the length direction of the box body. A plurality of hoisting holes are provided on the surface of the reinforcing beam, and the plurality of hoisting holes are distributed at intervals. The hoisting holes are used to realize the hoisting and displacement of the box body. A plurality of pulleys are provided on the surface of the reinforcing beam, and the pulleys are used to realize the sliding of the box body.

8. A sealed battery PACK box according to claim 7, characterized in that: The surface of the box body is provided with two lifting ring installation openings, the two lifting ring installation openings are symmetrically arranged, and the insides of the two lifting ring installation openings are respectively provided with guide pin assemblies.

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