Nickel-hydrogen battery pack with air cooling structure

Abstract

The utility model discloses a nickel hydrogen battery pack with air -cooled structure relates to nickel hydrogen battery pack technical field, including assembly shell, the inside installation of assembly shell has battery pack main part, the upper surface both sides of assembly shell are fixedly installed with guide rod, the surface of guide rod is opposite and is established in the recess in the middle of one side, the inner surface upper side of recess is fixedly connected with the elastic sheet, and the same limit rope is installed to the opposite side of elastic sheet with the hook, the surface of guide rod is slidably sleeved with same cover, and the cover is located limit rope upside. This nickel hydrogen battery pack with air -cooled structure compares with current ordinary nickel hydrogen battery pack, normality, assembly shell keeps open, ensures the self -heating of battery pack main part, when battery pack main part produces deflagration, and the cover and shell will form firm sealed space and cover battery pack main part, make battery only can carry out the combustion in closed box body, greatly promoted the security of whole battery pack main part in the family use.

Description

Technical Field

[0001] This utility model relates to the field of nickel-metal hydride battery pack technology, specifically a nickel-metal hydride battery pack with an air-cooling structure. Background Technology

[0002] Nickel-metal hydride (NiMH) batteries use Ni(OH)₂ (NiO electrode) as the positive electrode active material and a metal hydride (also known as a hydrogen storage alloy, called the hydrogen storage electrode) as the negative electrode active material. The electrolyte is a 6 mol / L potassium hydroxide solution. NiMH batteries generate heat during use, leading to an increased temperature. Excessive temperature can severely disrupt the chemical balance within the battery, causing irreversible reactions and ultimately severely impairing its overall performance. Therefore, it is necessary to cool NiMH batteries during use.

[0003] Existing nickel-metal hydride battery packs consist of multiple battery cells assembled within a housing. However, some of these packs are in an open state. While an open structure can ensure sufficient and effective heat dissipation and prevent overheating, it is difficult to effectively isolate the fire if it catches fire due to other factors. The flames can spread directly to the outside, posing a certain risk of use.

[0004] Therefore, in view of this, we studied and improved the existing structure to address its shortcomings, and proposed a nickel-metal hydride battery pack with an air-cooling structure. Utility Model Content

[0005] The purpose of this invention is to provide a nickel-metal hydride battery pack with an air-cooling structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nickel-metal hydride battery pack with an air-cooled structure, including an assembly shell, in which the battery pack body is installed. Guide rods are fixedly installed on both the left and right sides of the upper surface of the assembly shell. Grooves are formed in the middle of the opposite side of the surface of each guide rod. A spring piece is fixedly connected to the upper side of the inner surface of the groove. A limiting rope is installed on the opposite side of the spring piece using a hook. A cover is slidably fitted on the surface of the guide rod, and the cover is located above the limiting rope.

[0007] Preferably, the lower ends of the spring pieces protrude from the grooves on opposite sides, and the upper surface of the spring pieces protruding from the grooves is set as an inclined surface.

[0008] Preferably, heat-conducting plates are fixedly installed on both the front and rear sides of the assembly shell, and the heat-conducting plates penetrate the assembly shell and fit against the battery pack body.

[0009] Preferably, a heat dissipation fan is installed in the middle of the surface of the heat-conducting plate, and the air duct of the heat dissipation fan is connected to the inside of the assembly shell.

[0010] Preferably, the surface of the heat-conducting plate is uniformly and fixedly mounted with fins on the upper and lower sides of the heat dissipation fan, and the surface of the fins is uniformly provided with air holes.

[0011] Preferably, the heat-conducting plate is a copper plate, and the contact surface between the heat-conducting plate and the battery pack body is coated with thermal grease.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the setting of guide rod, groove, spring piece, limiting rope and cover, ensures that the cover is kept open under normal conditions to ensure normal self-heating of the battery pack body 2. In the event of a deflagration of the battery pack body 2, the cover 7 can close automatically, which can effectively prevent the battery pack body from affecting other items in the room during the deflagration. The battery pack body can only burn in the closed box, and the protection process does not require manual monitoring, which greatly improves the safety of the entire battery pack body in home use.

[0014] 2. This utility model, through the arrangement of a heat-conducting plate, a cooling fan, fins, and vents, allows the heat-conducting plate to adhere to the battery pack body for heat conduction. The heat absorbed by the heat-conducting plate, together with the fins, exchanges heat with the outside air, thereby dissipating heat. The vents ensure effective airflow between the fins, thereby enhancing the convection effect and improving the heat exchange effect. In conjunction with the cooling fan, hot air is continuously discharged, accelerating the airflow rate inside the assembly shell, which can fully and effectively dissipate heat and cool down the entire battery pack body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0016] Figure 2 This is a front sectional view of the guide rod and the cover of this utility model;

[0017] Figure 3 This is a schematic diagram of the heat-conducting plate structure of this utility model.

[0018] In the diagram: 1. Assembly shell; 2. Battery pack body; 3. Guide rod; 4. Groove; 5. Spring; 6. Limiting rope; 7. Cover; 8. Heat conduction plate; 9. Cooling fan; 10. Fins; 11. Vent. 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] like Figures 1-3 As shown, a nickel-metal hydride battery pack with an air-cooled structure includes an assembly shell 1, a battery pack body 2 installed inside the assembly shell 1, guide rods 3 fixedly installed on both the left and right sides of the upper surface of the assembly shell 1, grooves 4 are formed in the middle of the opposite side of the surface of the guide rods 3, spring pieces 5 are fixedly connected to the upper side of the inner surface of the grooves 4, and the same limiting rope 6 is installed on the opposite side of the spring pieces 5 by means of a hook, and the same cover 7 is slidably sleeved on the surface of the guide rods 3, and the cover 7 is located on the upper side of the limiting rope 6.

[0021] The lower end of the spring piece 5 protrudes from the groove 4 on one side, and the upper surface of the part of the spring piece 5 protruding from the groove 4 is set as a slope.

[0022] By adopting the above technical solution, the cover 7 is blocked by the limiting rope 6 under normal circumstances and cannot move down. Therefore, the assembly shell 1 always remains open, and there is enough space on the upper side of the battery pack body 2 for heat dissipation.

[0023] When the main body 2 of the battery pack catches fire, the battery fire is usually in a deflagration state. The flames explode rapidly. Because the surrounding area is blocked by the closed assembly shell 1, the flames will explode upward and will not spread to the surrounding area.

[0024] The flame will melt the limiting rope 6 immediately, and the cover 7, without the obstruction of the limiting rope 6, will slide down quickly along the guide rod 3 under its own weight. The weight of the cover 7 will push the spring piece 5 to retract into the groove 4 through the inclined surface. At this time, the cover 7 can move down to close the upper opening of the assembly shell 1. That is, the assembly shell 1 and the cover 7 form a completely sealed box to cover the main body 2 of the burning battery pack.

[0025] Furthermore, after the cover 7 closes the assembly shell 1, the spring 5 pops out again. However, the cover 7 cannot squeeze the spring 5 through the bottom plane of the spring 5 to retract into the groove 4, which means that the cover 7 cannot move upward to open. That is, the assembly shell 1 and the cover 7 can instantly form a complete and sealed box when the battery pack body 2 explodes and catches fire, and the upward impact force generated by the flame explosion will not cause the cover 7 to slide upward and open again.

[0026] It can effectively prevent the battery pack body 2 from spreading to other items in the room when it explodes, and the battery pack body 2 can only burn inside the closed box.

[0027] Furthermore, heat-conducting plates 8 are fixedly installed on both the front and rear sides of the surface of the assembly shell 1. The heat-conducting plates 8 penetrate the assembly shell 1 and are attached to the battery pack body 2.

[0028] The heat-conducting plate 8 is made of copper, and the contact surface between the heat-conducting plate 8 and the battery pack body 2 is coated with thermal grease.

[0029] By adopting the above technical solution, the heat-conducting plate 8 can be attached to the battery pack body 2 for heat conduction.

[0030] Furthermore, a cooling fan 9 is installed in the middle of the surface of the heat-conducting plate 8, and the air duct of the cooling fan 9 is connected to the inside of the assembly shell 1; both the inner and outer ends of the air duct are provided with fire-resistant mesh, that is, the cooling fan 9 is located in the middle of the front and rear fire-resistant meshes inside the air duct.

[0031] By adopting the above technical solution, the cooling fan 9 continuously exhausts hot air, accelerating the air circulation rate inside the assembly shell 1; the fireproof mesh can ensure that the cooling fan 9 blows air normally, and can also prevent the flame inside the shell from rushing out of the air duct when a fire occurs, ensuring the shell's ability to seal and prevent fire overflow.

[0032] Furthermore, fins 10 are evenly distributed and fixedly installed on the surface of the heat conduction plate 8 on the upper and lower sides of the heat dissipation fan 9, and air holes 11 are evenly distributed on the surface of the fins 10.

[0033] By adopting the above technical solution, the heat absorbed by the heat-conducting plate 8 is exchanged with the outside air by the fins 10 to dissipate heat. The vents 11 can ensure effective air circulation between the fins 10, thereby enhancing the convection effect and improving the heat exchange effect.

[0034] Working Principle: When using this nickel-metal hydride battery pack with air cooling structure, firstly, under normal circumstances, the cover 7 is blocked by the limiting rope 6 and cannot move downwards. Therefore, the assembly shell 1 always remains open, and there is sufficient space on the upper side of the battery pack body 2 for heat dissipation. During use, the heat-conducting plate 8 can adhere to the battery pack body 2 for heat conduction. The heat absorbed by the heat-conducting plate 8, together with the fins 10, exchanges heat with the outside air, thereby dissipating heat. The vents 11 ensure effective airflow between the fins 10, thereby enhancing the convection effect and improving the heat exchange effect. Together with the cooling fan 9 continuously exhausting hot air, the airflow rate inside the assembly shell 1 is accelerated, which can fully and effectively dissipate heat and cool down the entire battery pack body 2. If the battery pack body 2 suddenly catches fire and explodes, the flames will explode upwards due to the obstruction of the closed assembly shell 1. At this time, the flames will melt the limiting rope 6 immediately, and the cover 7, no longer obstructed by the limiting rope 6, will move upwards under its own gravity. The guide rod 3 slides downwards quickly, and the weight of the cover 7 pushes the spring piece 5 to retract into the groove 4 through the inclined surface. At this time, the cover 7 can move down to close the upper opening of the assembly shell 1. That is, the assembly shell 1 and the cover 7 form a completely sealed box to cover the burning battery pack body 2. After the cover 7 closes the assembly shell 1, the spring piece 5 pops out again. The cover 7 cannot squeeze the spring piece 5 to retract into the groove 4 through the bottom plane of the spring piece 5, which means that the cover 7 cannot move upwards to open. That is, the assembly shell 1 and the cover 7 can instantly form a complete and sealed box when the battery pack body 2 explodes and catches fire. The upward impact force generated by the explosion will not cause the cover 7 to slide upwards and open again, ensuring the stability of the entire sealed box. This effectively prevents the battery pack body 2 from affecting other items in the room when it explodes. The battery pack body 2 can only burn in the sealed box. This is the working principle of the nickel-metal hydride battery pack with air cooling structure.

Claims

1. A nickel-metal hydride battery pack with an air-cooled structure, comprising an assembly casing (1), characterized in that, The battery pack body (2) is installed inside the assembly shell (1). Guide rods (3) are fixedly installed on both the left and right sides of the upper surface of the assembly shell (1). A groove (4) is opened in the middle of the opposite side of the surface of the guide rod (3). A spring piece (5) is fixedly connected to the upper side of the inner surface of the groove (4). The same limiting rope (6) is installed on the opposite side of the spring piece (5) by a hook. The same cover (7) is slidably sleeved on the surface of the guide rod (3), and the cover (7) is located on the upper side of the limiting rope (6).

2. A nickel-metal hydride battery pack with an air-cooled structure according to claim 1, characterized in that, The lower end of the spring piece (5) protrudes from the groove (4) on one side, and the upper surface of the part of the spring piece (5) protruding from the groove (4) is set as an inclined surface.

3. A nickel-metal hydride battery pack with an air-cooled structure according to claim 1, characterized in that, Heat-conducting plates (8) are fixedly installed on both the front and rear sides of the surface of the assembly shell (1). The heat-conducting plates (8) penetrate the assembly shell (1) and fit against the battery pack body (2).

4. A nickel-metal hydride battery pack with an air-cooled structure according to claim 3, characterized in that, A cooling fan (9) is installed in the middle of the surface of the heat-conducting plate (8), and the air duct of the cooling fan (9) is connected to the inside of the assembly shell (1).

5. A nickel-metal hydride battery pack with an air-cooled structure according to claim 3, characterized in that, The surface of the heat-conducting plate (8) is uniformly distributed and fixedly installed with fins (10) on the upper and lower sides of the heat dissipation fan (9), and the surface of the fins (10) is uniformly distributed with air holes (11).

6. A nickel-metal hydride battery pack with an air-cooled structure according to claim 3, characterized in that, The heat-conducting plate (8) is made of copper, and the contact surface between the heat-conducting plate (8) and the battery pack body (2) is coated with heat-dissipating silicone grease.

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