Cooling protection device for sodium ion battery

Abstract

The utility model relates to the field of battery protection structures, in particular to a cooling protection device for a sodium ion battery, which comprises a cooling protection box, the sodium ion battery and a top cover, a lower end damping spring is arranged at the lower end of the cooling protection box, a battery wrap angle is arranged at the upper end of the lower end damping spring, and the inner side of the battery wrap angle is connected with a lower end heat conducting plate. Side heat conduction plates are attached to the two sides of the sodium ion battery, supporting springs are arranged on one sides of the side heat conduction plates, multiple sets of side heat dissipation fins are installed on the sides, away from the sodium ion battery, of the side heat conduction plates at intervals, a top cover is installed at the upper end of the cooling protection box, upper end damping springs are arranged at the lower end of the top cover, and the lower ends of the lower end damping springs are connected with battery wrap angles. The utility model has the beneficial effects that through the arrangement of the lower end heat-conducting plate, the side heat-conducting plate and the upper end heat-conducting plate and the application of the phase-change material, the heat generated by the sodium ion battery can be effectively absorbed and conducted, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery protection structures, in particular to a temperature reduction protection device for a sodium ion battery. Background Art

[0002] Sodium-ion battery is a secondary battery that mainly relies on the movement of sodium ions between the positive and negative electrodes to work. It has a similar working principle to lithium-ion batteries, and both are called "rocking chair" batteries. The advantages of sodium-ion batteries are abundant sodium resources, low cost, high safety, excellent high and low temperature performance, and high fast charging rate. The disadvantages of sodium-ion batteries are low energy density, short cycle life, and high internal resistance. Sodium-ion batteries are currently mainly used in energy storage, low-speed electric vehicles and other fields, and it is difficult to replace the mainstream position of lithium-ion batteries in electric vehicles and consumer electronics.

[0003] In the related art, sodium-ion batteries generate heat during use. When the temperature of the battery is too high, it will affect the battery's efficiency and service life. For this reason, we propose a cooling protection device for sodium-ion batteries.

[0004] The above information disclosed in this Background section is only for understanding the background of the present inventive concept and therefore it may contain information that does not constitute prior art. Utility Model Content

[0005] The utility model aims to provide a temperature reduction protection device for a sodium ion battery, so as to solve the problem that the sodium ion battery mentioned in the background technology will generate heat during use, and when the temperature of the battery is too high, it will affect the use efficiency and service life of the battery.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A cooling protection device for a sodium ion battery comprises a cooling protection box, a sodium ion battery, side heat dissipation fins and a top cover, wherein a lower end damping spring is symmetrically installed inside the lower end of the cooling protection box, a battery corner is installed on the upper end of the lower end damping spring, a lower end heat conducting plate is connected and fixed to the inner side of the battery corner, a plurality of groups of lower end heat dissipation fins are installed on the lower end of the lower end heat conducting plate, a sodium ion battery is placed on the upper end of the lower end heat conducting plate, side heat conducting plates are fitted on the left and right sides of the sodium ion battery, and the upper and lower ends of the side heat conducting plate away from the sodium ion battery are opposite to each other. A support spring is installed, and one end of the support spring away from the sodium ion battery is connected to the inner wall of the cooling protection box, a plurality of groups of side cooling fins are installed at intervals on the side of the side heat conducting plate away from the sodium ion battery, a top cover is installed on the upper end of the cooling protection box, an upper end shock absorbing spring is symmetrically installed on the lower end of the top cover, a battery corner is connected to the lower end of the upper end shock absorbing spring, an upper end heat conducting plate is connected and fixed to the inner side of the upper end battery corner, the upper end heat conducting plate is fitted to the upper end of the sodium ion battery, and the inner side of the battery corner is fitted to the sodium ion battery.

[0008] In some embodiments, a ventilation cavity is set between the inner side of the cooling protection box and the sodium ion battery, upper exhaust fans are installed on the left and right sides of the upper end of the top cover, an upper cooling fan is installed at the upper center of the top cover, and cooling grilles are opened at the corresponding positions of the upper cooling fan and the upper exhaust fan.

[0009] In some embodiments, lower end inlet fans are symmetrically installed on the left and right sides of the lower end of the cooling protection box, a lower end heat dissipation fan is installed at the center of the lower end of the cooling protection box, and heat dissipation grilles are opened at the corresponding positions of the lower end inlet fan and the lower end heat dissipation fan.

[0010] In some embodiments, fixed brackets are installed on the left and right sides of the side of the top cover, a fixing rod is penetrated through the lower end of the fixed bracket, the inner side of the fixing rod is installed in the slot of the cooling protection box, and a limiting plate is installed on the outer side of the cooling protection box.

[0011] In some embodiments, a connecting spring is installed on one side of the limiting plate, one end of the connecting spring is connected to the inner side of the fixing bracket, and a pulling rod is installed on one end of the fixing rod away from the fixing bracket.

[0012] In some embodiments, a handle is symmetrically installed on the upper end of the top cover, a support column is installed on the left side of the lower end of the cooling protection box, a universal wheel is installed on the lower end of the support column, and phase change material is installed inside the side heat conduction plate, the lower heat conduction plate and the upper heat conduction plate, and the phase change material is a paraffin-graphite composite phase change material.

[0013] The beneficial effects of the utility model are:

[0014] Optimized heat dissipation effect: Through the setting of the lower heat conduction plate, the side heat conduction plate and the upper heat conduction plate, and the application of phase change materials, the heat generated by the sodium ion battery can be effectively absorbed and conducted to improve the heat dissipation efficiency;

[0015] Multi-stage heat dissipation system: Combining the upper cooling fan, upper exhaust fan, lower intake fan and lower cooling fan, through the setting of ventilation cavity and heat dissipation grille, multi-stage heat dissipation is achieved, which enhances the transfer and dissipation of heat and effectively reduces the battery temperature;

[0016] Improve the heat dissipation channel: by installing side heat dissipation fins, the heat dissipation surface area is increased, the heat conduction efficiency is improved, and the heat dissipation is accelerated;

[0017] Stable structure and convenient operation: Through the setting of fixed brackets, fixed rods, limit plates and pull rods, the cooling protection box and the top cover can be firmly connected and quickly disassembled, which is convenient for maintenance and replacement of sodium-ion batteries;

[0018] Easy to move: The handle on the top of the top cover and the support column and universal wheels at the bottom make it easy for users to move the sodium-ion battery and the cooling protection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a temperature reduction protection device for a sodium ion battery proposed in the utility model;

[0020] Figure 2 This is an enlarged view of point A of a temperature reduction protection device for a sodium ion battery proposed in the utility model.

[0021] In the figure: 1 is the end exhaust fan, 2 is the handle, 3 is the heat dissipation grille, 4 is the upper end heat dissipation fan, 5 is the upper end heat conduction plate, 6 is the phase change material, 7 is the upper end shock-absorbing spring, 8 is the top cover, 9 is the battery package angle, 10 is the support spring, 11 is the side heat dissipation fin, 12 is the side heat conduction plate, 13 is the side shock-absorbing spring, 14 is the lower end shock-absorbing spring, 15 is the lower end air intake fan, 16 is the support column, 17 is the lower end heat dissipation fin, 18 is the sodium ion battery, 19 is the lower end heat dissipation fan, 20 is the lower end heat conduction plate, 21 is the universal wheel, 22 is the cooling protection box, 23 is the ventilation cavity, 24 is the pull rod, 25 is the fixing rod, 26 is the connecting spring, 27 is the slot, 28 is the limit plate, and 29 is the fixing bracket. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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 utility model.

[0024] 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.

[0025] Reference Figure 1 A cooling protection device for a sodium ion battery comprises a cooling protection box 22, a sodium ion battery 18, a side heat dissipation fin 11 and a top cover 8, a lower end damping spring 14 is symmetrically installed inside the lower end of the cooling protection box 22, a battery package angle 9 is installed on the upper end of the lower end damping spring 14, a lower end heat conducting plate 20 is connected and fixed to the inner side of the battery package angle 9, a plurality of groups of lower end heat dissipation fins 17 are installed at the lower end of the lower end heat conducting plate 20, a sodium ion battery 18 is placed on the upper end of the lower end heat conducting plate 20, a side heat conducting plate 12 is fitted on the left and right sides of the sodium ion battery 18, a support spring 10 is symmetrically installed on the upper and lower ends of the side heat conducting plate 12 away from the sodium ion battery 18, and the support spring 10 is far away from the sodium ion battery 18. One end away from the sodium ion battery 18 is connected to the inner wall of the cooling protection box 22, and a plurality of groups of side cooling fins 11 are installed at intervals on the side of the side heat conducting plate 12 away from the sodium ion battery 18. A top cover 8 is installed on the upper end of the cooling protection box 22, and an upper shock absorbing spring 7 is symmetrically installed on the lower end of the top cover 8. A battery corner 9 is connected to the lower end of the upper shock absorbing spring 7, and an upper heat conducting plate 5 is fixedly connected to the inner side of the upper battery corner 9. The upper heat conducting plate 5 is fitted with the upper end of the sodium ion battery 18, and the inner side of the battery corner 9 is fitted with the sodium ion battery 18. Dampers are provided inside all springs. There is no restriction on the specific type of the shock absorbing spring, and a suitable spring type can be selected according to needs.

[0026] When the embodiments of the present utility model are implemented, Figure 1 As shown, a ventilation cavity 23 is set between the inner side of the cooling protection box 22 and the sodium ion battery 18, an upper exhaust fan 1 is installed on the left and right sides of the upper end of the top cover 8, an upper heat dissipation fan 4 is installed at the upper center of the top cover 8, and a heat dissipation grille 3 is opened at the corresponding positions of the upper heat dissipation fan 4 and the upper exhaust fan 1, and a lower inlet fan 15 is symmetrically installed on the left and right sides of the lower end of the cooling protection box 22, and a lower heat dissipation fan 19 is installed at the lower center of the cooling protection box 22, and a heat dissipation grille 3 is opened at the corresponding positions of the lower inlet fan 15 and the lower heat dissipation fan 19. Through the arrangement of the ventilation cavity 23 and the heat dissipation grille 3, multi-stage heat dissipation is achieved, heat transfer and dissipation are enhanced, and the battery temperature is effectively reduced.

[0027] When the embodiments of the present utility model are implemented, Figure 1 , 2 As shown, fixed brackets 29 are installed on the left and right sides of the side of the top cover 8, and a fixing rod 25 is penetrated through the lower end of the fixing bracket 29. The inner side of the fixing rod 25 is installed in the slot 27 of the cooling protection box 22, and the fixing rod 25 is installed with a limiting plate 28 on the outer side of the cooling protection box 22. A connecting spring 26 is installed on one side of the limiting plate 28, and one end of the connecting spring 26 is connected to the inner side of the fixing bracket 29. A pull rod 24 is installed on the end of the fixing rod 25 away from the fixing bracket 29. The quick installation of the top cover 8 is achieved through the setting of the pull rod 24 and the connecting spring 26.

[0028] When the embodiments of the present utility model are implemented, Figure 1 As shown, a handle 2 is symmetrically installed on the upper end of the top cover 8, a support column 16 is installed on the left side of the lower end of the cooling protection box 22, and a universal wheel 21 is installed on the lower end of the support column 16. Phase change materials 6 are installed inside the side heat conduction plates 12, the lower heat conduction plates 20 and the upper heat conduction plates 5. The phase change material 6 is a paraffin-graphite composite phase change material. The phase change material 6 can be used for cooling because they absorb a large amount of heat during the solid-liquid phase change process, thereby reducing the surrounding temperature. There are many types of phase change materials, such as water, paraffin, glycerin, dry ice, etc. Their phase change temperatures and latent heat are different, and they can be selected according to different cooling requirements.

[0029] In this embodiment, the cooling protection box 22 is a closed container, the lower end of which is internally installed with a lower end damping spring 14 and a lower end heat conducting plate 20, and the upper end is installed with an upper end damping spring 7 and an upper end heat conducting plate 5. These components play the role of supporting and fixing the sodium ion battery 18 and conducting heat. The sodium ion battery 18 is placed in the cooling protection box 22, and its stability is guaranteed by the support of the lower end damping spring 14 and the upper end damping spring 7. The lower end heat conducting plate 20 and the upper end heat conducting plate 5 are respectively arranged in contact with the lower end and the upper end of the sodium ion battery 18, and are used to conduct and disperse the heat generated by the battery. Multiple groups of side heat dissipation fins 11 are installed at intervals on the side heat conducting plate 12, which increases the heat dissipation surface area and promotes the heat dissipation effect. The upper end exhaust fan 1 and the upper end heat dissipation fan 4 are installed on the upper end of the top cover, and the lower end intake fan 15 and the lower end heat dissipation fan 19 are symmetrically installed on the left and right sides of the lower end of the cooling protection box 22. These fans make air flow through the heat dissipation grille 3, thereby taking away the heat generated by the battery. A ventilation cavity 23 is set between the inner side of the cooling protection box 22 and the sodium ion battery 18 to ensure air circulation and heat dissipation effects. Fixed brackets 29 are installed on the left and right sides of the side of the top cover 8. A fixing rod 25 is penetrated at the lower end of the fixing bracket 29. The fixing rod 25 is fixed in the cooling protection box 22 through a slot 27 to ensure the stability of the structure. Phase change materials 6 are installed inside the side heat conduction plates 12, the lower heat conduction plates 20 and the upper heat conduction plates 5. Paraffin-graphite composite phase change materials are used. These phase change materials 6 can absorb and release heat to improve the heat dissipation effect.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cooling protection device for a sodium ion battery, comprising a cooling protection box (22), a sodium ion battery (18), side cooling fins (11) and a top cover (8), characterized in that: A lower end damping spring (14) is symmetrically installed inside the lower end of the cooling protection box (22), a battery corner (9) is installed on the upper end of the lower end damping spring (14), a lower end heat conducting plate (20) is connected and fixed to the inner side of the battery corner (9), a plurality of groups of lower end heat dissipation fins (17) are installed on the lower end of the lower end heat conducting plate (20), a sodium ion battery (18) is placed on the upper end of the lower end heat conducting plate (20), side heat conducting plates (12) are fitted on the left and right sides of the sodium ion battery (18), and a support spring (10) is symmetrically installed on the upper and lower ends of the side heat conducting plate (12) away from the sodium ion battery (18), and the support spring (10) is far away from the upper and lower ends of the side heat conducting plate (12). One end away from the sodium ion battery (18) is connected to the inner wall of the cooling protection box (22); a side heat conduction plate (12) away from the sodium ion battery (18) is provided with multiple groups of side heat dissipation fins (11) at intervals; a top cover (8) is provided at the upper end of the cooling protection box (22); an upper damping spring (7) is symmetrically provided at the lower end of the top cover (8); a battery corner (9) is connected to the lower end of the upper damping spring (7); an upper heat conduction plate (5) is connected and fixed to the inner side of the upper battery corner (9); the upper heat conduction plate (5) is fitted to the upper end of the sodium ion battery (18); and the inner side of the battery corner (9) is fitted to the sodium ion battery (18).

2. A temperature reduction protection device for a sodium ion battery according to claim 1, characterized in that: A ventilation cavity (23) is provided between the inner side of the cooling protection box (22) and the sodium ion battery (18); upper exhaust fans (1) are installed on the left and right sides of the upper end of the top cover (8); an upper heat dissipation fan (4) is installed at the central position of the upper end of the top cover (8); and heat dissipation grilles (3) are provided at corresponding positions of the upper heat dissipation fan (4) and the upper exhaust fan (1).

3. A temperature reduction protection device for a sodium ion battery according to claim 1, characterized in that: A lower end inlet fan (15) is symmetrically installed on the left and right sides of the lower end of the cooling protection box (22), a lower end heat dissipation fan (19) is installed at the central position of the lower end of the cooling protection box (22), and a heat dissipation grille (3) is provided at the corresponding positions of the lower end inlet fan (15) and the lower end heat dissipation fan (19).

4. A temperature reduction protection device for a sodium ion battery according to claim 1, characterized in that: The left and right sides of the side of the top cover (8) are provided with fixing brackets (29), the lower end of the fixing bracket (29) is penetrated by a fixing rod (25), the inner side of the fixing rod (25) is installed in a slot (27) of the cooling protection box (22), and the fixing rod (25) is provided with a limiting plate (28) on the outer side of the cooling protection box (22).

5. A temperature reduction protection device for a sodium ion battery according to claim 4, characterized in that: A connecting spring (26) is installed on one side of the limiting plate (28), one end of the connecting spring (26) is connected to the inner side of the fixing bracket (29), and a pull rod (24) is installed on one end of the fixing rod (25) away from the fixing bracket (29).

6. A temperature reduction protection device for a sodium ion battery according to claim 1, characterized in that: A handle (2) is symmetrically mounted on the upper end of the top cover (8); a support column (16) is mounted on the left side of the lower end of the cooling protection box (22); a universal wheel (21) is mounted on the lower end of the support column (16); and phase change material (6) is mounted inside the side heat conduction plate (12), the lower heat conduction plate (20) and the upper heat conduction plate (5); the phase change material (6) is a paraffin-graphite composite phase change material.

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