Battery case with protection structure

Abstract

The utility model discloses a battery shell with protection structure belongs to battery shell technical field, and includes: installation baseplate and shell frame, the inside of shell frame is provided with water circulation heat abstractor, and the bottom of installation baseplate is installed with the fin, the utility model discloses the thickness of shell frame is increased, and the strength of battery shell is promoted, and the cavity is established in the inside of shell frame again, is used to install water circulation heat abstractor to reduce the weight of battery shell, and then cooperation installation baseplate bottom's fin can carry out the diffusion to the heat of battery shell inner chamber electric core from installation baseplate's bottom, and the outside of shell frame and installation baseplate still can spray anticorrosive coating and insulating coating, is used for the protection of battery shell, makes battery shell under the premise of partial stronger protection function and improves the heat dissipation efficiency of electric core.

Description

Technical Field

[0001] This utility model relates to the field of battery casing technology, specifically to a battery casing with a protective structure. Background Technology

[0002] The main function of the battery casing is to protect the internal materials of the battery and prevent the effects of external impact, heat and moisture, thereby ensuring the safety and stability of the battery. The batteries of new energy vehicles are usually installed on the vehicle's base, and the battery casing is mainly divided into metal casing and plastic casing. In order to improve the strength of the battery, the battery casing usually needs to be strong enough to not only resist external impact, but also resist the expansion of the battery cells and prevent the casing from cracking.

[0003] The battery casing is used to seal and protect the battery cell. To ensure the safety of the battery cell and the strength of the battery casing, the thickness of the battery casing can be increased. However, the increase in the thickness of the battery casing directly affects the heat dissipation of the battery cell. At the same time, metal casings have good thermal conductivity, but in order to prevent corrosion and provide insulation, the surface needs to be covered with a coating and an insulating layer, which in turn hinders the conduction of heat. Plastic casings have low thermal conductivity, making it difficult for heat to dissipate quickly and easily causing thermal runaway. Traditional battery casings reduce heat dissipation performance while providing protection. Utility Model Content

[0004] The purpose of this utility model is to provide a battery casing with a protective structure. By increasing the thickness of the casing frame, the battery casing has stronger protective capabilities. Then, a channel is opened inside the casing frame for installing a water-cooling heat dissipation component. This not only allows for water cooling but also reduces the weight of the casing frame. Subsequently, a heat sink is attached to the outside of the mounting base, enabling heat conduction through contact. This avoids the problem of heat dissipation efficiency being affected by the anti-corrosion coating and insulating coating on the outside of the casing frame and mounting base, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a battery casing with a protective structure, comprising:

[0006] Mounting base and housing frame;

[0007] The housing frame is equipped with a water circulation heat dissipation component, and the bottom of the mounting base is equipped with heat sinks. The housing frame is made of thickened aluminum alloy. A protective frame is fixed on the side of the mounting base away from the housing frame. The protective frame is located on the outside of the heat sinks, and the extension direction of the adjacent heat sink fins is perpendicular.

[0008] The mounting base and outer casing are coated with an anti-corrosion coating and an insulating coating on their outer surfaces.

[0009] Preferably, the water circulation heat dissipation assembly includes an outer pipe embedded inside one side of the outer casing frame. The two ends of the outer pipe are respectively connected to a diversion pipe via a connecting pipe. Multiple sets of heat exchange pipes are connected between the two sets of diversion pipes. The heat exchange pipes are embedded inside the top and side walls of the outer casing frame.

[0010] Preferably, both ends of the outer tube extend outward, and both sides of the outer casing frame are provided with external connectors, which are threadedly connected to both ends of the outer tube.

[0011] Preferably, a first solenoid valve is provided on the outer pipe between the two sets of connecting pipes, and a second solenoid valve is provided on the connecting pipe.

[0012] Preferably, the outer shell frame is snapped onto the top of the mounting base, and the bottom of the mounting base is provided with a first mounting bolt. The first mounting bolt passes through the mounting base and is threaded around the bottom of the outer shell frame. A sealing gasket is provided between the outer shell frame and the mounting base.

[0013] Preferably, a second mounting bolt is provided on the outer side of the heat sink, the second mounting bolt passes through the heat sink and is threadedly connected to the mounting base, and the heat sink is attached to the mounting base.

[0014] Preferably, the heat sink has a storage groove around its perimeter on the side near the mounting base, and a rubber gasket is embedded in the inner cavity of the storage groove. The side of the rubber gasket away from the heat sink is attached to the outer side of the mounting base.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model increases the strength of the battery casing by increasing the thickness of the outer frame, and at the same time opens a cavity inside the outer frame for installing a water circulation heat dissipation component, thereby reducing the weight of the battery casing. Then, with the heat sink at the bottom of the mounting base, the heat of the battery cell inside the battery casing can be dissipated from the bottom of the mounting base. Furthermore, the outer sides of the outer frame and the mounting base can be sprayed with anti-corrosion coating and insulating coating for the protection of the battery casing, so that the battery casing can improve the heat dissipation efficiency of the battery cell while providing strong local protection.

[0017] 2. This utility model, through the setting of rubber gaskets, ensures that the heat sink fits snugly with the mounting base while preventing air and water stains from penetrating inward, thus playing a role in isolation and protection. It can eliminate the need to spray anti-corrosion coating on the area covered by the heat sink, improve the heat conduction efficiency of the heat sink to the mounting base, and quickly cool down the battery casing. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of the outer shell frame and the mounting base of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the water circulation heat dissipation component of this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram showing the disassembled mounting base and heat sink of this utility model.

[0022] The following are the labels in the diagram: 1. Mounting base; 2. Outer frame; 3. Water circulation heat dissipation assembly; 31. External pipe; 32. Connecting pipe; 33. Diverter pipe; 34. Heat exchanger pipe; 4. Heat sink; 5. Protective frame; 6. External connector; 7. First solenoid valve; 8. Second solenoid valve; 9. First mounting bolt; 10. Sealing gasket; 11. Second mounting bolt; 12. Rubber gasket. Detailed Implementation

[0023] 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.

[0024] This utility model provides, for example Figures 1-4 The battery casing shown has a protective structure, comprising:

[0025] Mounting base 1 and outer casing 2;

[0026] The housing frame 2 is equipped with a water circulation heat dissipation component 3, and the bottom of the mounting base 1 is equipped with a heat sink 4. The housing frame 2 is made of thickened aluminum alloy. A protective frame 5 is fixed on the side of the mounting base 1 away from the housing frame 2. The protective frame 5 is located on the outside of the heat sink 4, and the extension direction of the fins of the adjacent heat sink 4 is perpendicular.

[0027] The outer sides of the mounting base 1 and the outer casing 2 are coated with an anti-corrosion coating and an insulating coating.

[0028] By increasing the thickness of the outer frame 2, the strength of the battery casing is improved. At the same time, a cavity is opened inside the outer frame 2 for installing the water circulation heat dissipation component 3, thereby reducing the weight of the battery casing. Subsequently, in conjunction with the heat sink 4 at the bottom of the mounting base 1, the heat of the battery cell inside the battery casing can be dissipated from the bottom of the mounting base 1. Furthermore, the outer sides of the outer frame 2 and the mounting base 1 can be sprayed with anti-corrosion coating and insulating coating for the protection of the battery casing, thereby improving the heat dissipation efficiency of the battery cell while providing strong local protection.

[0029] Among them, such as Figure 3 As shown:

[0030] The water circulation heat dissipation assembly 3 includes an outer pipe 31 embedded inside one side of the outer shell frame 2. The two ends of the outer pipe 31 are connected to a branch pipe 33 through a connecting pipe 32. Multiple heat exchange pipes 34 are connected between the two branches of the branch pipe 33. The heat exchange pipes 34 are embedded inside the top and side wall of the outer shell frame 2. The branch pipes 33 are connected to the outer pipe 31 through a connecting rod. Then the branch pipes 33 are connected through multiple heat exchange pipes 34, so that the cooling water flows through the interior of the outer shell frame 2 along the water circulation channel, and carries away the heat to achieve the purpose of heat exchange and cooling.

[0031] Furthermore, such as Figure 1-3 As shown:

[0032] Both ends of the outer pipe 31 extend outwards, and both sides of the outer frame 2 are provided with external connectors 6. The external connectors 6 are threadedly connected to both ends of the outer pipe 31. By connecting the external connectors 6 to the outer pipe 31, it is convenient to connect the outer pipe 31 to the cooling water pipe of the new energy vehicle. The front-mounted cold water tank of the new energy vehicle needs to be extended to the rear through a water pipe. Therefore, multiple sets of water pipes are distributed under the vehicle. It is only necessary to connect the outer pipe 31 to the vehicle's original cooling water pipe.

[0033] Preferred, such as Figure 3 As shown:

[0034] A first solenoid valve 7 is installed on the external pipe 31 between the two sets of connecting pipes 32, and a second solenoid valve 8 is installed on the connecting pipe 32. The first solenoid valve 7 and the second solenoid valve 8 are used to control the opening and closing of the external pipe 31 and the connecting pipe 32 respectively, thereby controlling the flow direction of the cooling water in the external pipe 31. The first solenoid valve 7 and the second solenoid valve 8 are jointly controlled by the central control system and the battery management system of the new energy vehicle.

[0035] It is worth noting that, such as Figure 2 As shown:

[0036] The outer casing 2 is snapped onto the top of the mounting base 1. The bottom of the mounting base 1 is provided with a first mounting bolt 9. The first mounting bolt 9 passes through the mounting base 1 and is threaded around the bottom of the outer casing 2. A sealing gasket 10 is placed between the outer casing 2 and the mounting base 1. The outer casing 2 and the mounting base 1 can be installed by the first mounting bolt 9. At the same time, the sealing gasket 10 is used to ensure the sealing of the installation and ensure the safety of the internal battery cell.

[0037] In a further preferred embodiment, such as Figure 4 As shown:

[0038] A second mounting bolt 11 is provided on the outer side of the heat sink 4. The second mounting bolt 11 passes through the heat sink 4 and is threadedly connected to the mounting base 1. The heat sink 4 is attached to the mounting base 1. The heat sink 4 and the mounting base 1 can be fixed together by the second mounting bolt 11. The heat sink 4 is used to dissipate the heat on the mounting base 1 to the outside, thereby reducing the temperature of the battery pack.

[0039] In addition, such as Figure 4 As shown:

[0040] The heat sink 4 has storage grooves around its perimeter on the side closest to the mounting base 1. A rubber gasket 12 is embedded in the inner cavity of the storage groove. The side of the rubber gasket 12 away from the heat sink 4 is attached to the outer side of the mounting base 1. The rubber gasket 12 ensures that the heat sink 4 is in close contact with the mounting base 1 while preventing air and water stains from penetrating inward, thus playing a role in isolation and protection. This eliminates the need to spray an anti-corrosion coating on the area covered by the heat sink 4, improves the heat conduction efficiency of the heat sink 4 to the mounting base 1, and quickly cools down the battery casing.

[0041] In practical use, after the outer casing frame 2 is installed on the mounting base 1 using the first mounting bolt 9, the battery casing is placed in the battery pack mounting compartment of the vehicle. At the same time, the external connector 6 is used to connect the external pipe 31 to the coolant pipe on the vehicle. Then, the battery casing is fixed in the battery pack mounting compartment using the mounting base 1. The heat sink 4 is then installed at the bottom of the mounting base 1 using the second mounting bolt 11. The first solenoid valve 7 and the second solenoid valve 8 are controlled by the battery management system and the vehicle central control system. When the temperature inside the battery pack rises, the first solenoid valve 7 is closed and the second solenoid valve 8 is opened, and the coolant in the external coolant pipe is guided into the diverter pipe 33 through the cooling water connection pipe 32. Then, the heat exchanger pipe 34 exchanges heat with the heat inside the outer casing frame 2, quickly carrying away the heat of the battery cell and reducing the instability of the outer casing frame 2. At the same time, the heat sink 4 diffuses the heat on the mounting base 1 to the bottom through heat conduction.

[0042] 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 battery casing with a protective structure, characterized in that, include: Mounting base (1) and outer casing (2); The housing frame (2) is provided with a water circulation heat dissipation component (3), and the bottom of the mounting base (1) is provided with a heat sink (4). The housing frame (2) is made of thickened aluminum alloy. A protective frame (5) is fixed on the side of the mounting base (1) away from the housing frame (2). The protective frame (5) is located on the outside of the heat sink (4), and the extension direction of the fins of the adjacent heat sink (4) is perpendicular. The outer sides of the mounting base (1) and the outer shell frame (2) are coated with anti-corrosion coating and insulating coating.

2. The battery casing with a protective structure according to claim 1, characterized in that: The water circulation heat dissipation assembly (3) includes an outer pipe (31) embedded inside one side of the outer shell frame (2). The two ends of the outer pipe (31) are connected to a diversion pipe (33) through a connecting pipe (32). Multiple heat exchange pipes (34) are connected between the two sets of diversion pipes (33). The heat exchange pipes (34) are embedded inside the top and side wall of the outer shell frame (2).

3. A battery casing with a protective structure according to claim 2, characterized in that: The two ends of the outer tube (31) extend outward, and the outer shell frame (2) is provided with external connectors (6) on both sides. The external connectors (6) are threadedly connected to the two ends of the outer tube (31).

4. A battery casing with a protective structure according to claim 3, characterized in that: A first solenoid valve (7) is provided on the external pipe (31) between the two sets of connecting pipes (32), and a second solenoid valve (8) is provided on the connecting pipe (32).

5. A battery casing with a protective structure according to claim 1, characterized in that: The outer shell frame (2) is snapped onto the top of the mounting base (1). The bottom of the mounting base (1) is provided with a first mounting bolt (9). The first mounting bolt (9) passes through the mounting base (1) and is threaded around the bottom of the outer shell frame (2). A sealing gasket (10) is provided between the outer shell frame (2) and the mounting base (1).

6. A battery casing with a protective structure according to claim 1, characterized in that: A second mounting bolt (11) is provided on the outer side of the heat sink (4). The second mounting bolt (11) passes through the heat sink (4) and is threadedly connected to the mounting base (1). The heat sink (4) is attached to the mounting base (1).

7. A battery casing with a protective structure according to claim 1, characterized in that: The heat sink (4) has a storage groove around its perimeter on the side near the mounting base (1). A rubber gasket (12) is embedded in the inner cavity of the storage groove. The side of the rubber gasket (12) away from the heat sink (4) is attached to the outer side of the mounting base (1).

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