High-efficiency heat exchange lithium battery

Abstract

The utility model discloses an efficient heat exchange lithium battery, and relates to the field of mobile phone lithium batteries, the efficient heat exchange lithium battery comprises a lithium battery body, the lithium battery body comprises a cooling fin and a battery core body, a heat conduction interface material is wrapped in the cooling fin, and the battery core body is wrapped in the heat conduction interface material; a lower ultra-thin heat pipe is fixedly mounted at the bottom of the battery core body, and an upper ultra-thin heat pipe is fixedly mounted at the top of the battery core body; the top of the cooling fin is fixedly connected with a plurality of upper cooling pads, and the bottom of the cooling fin is fixedly connected with a plurality of lower cooling pads. The heat conduction interface material comprises a heat conduction plate, and the inner wall of the heat conduction plate is wrapped with a heat dissipation plate. By arranging the heat conduction interface material, heat exchange can be carried out on the lithium battery, heat dissipation can be further carried out on the lithium battery, meanwhile, a plurality of upper heat dissipation pads and a plurality of lower heat dissipation pads are arranged, heat dissipation of the lithium battery can be accelerated, meanwhile, heat of heat dissipation fins is dispersed, and therefore the efficient heat exchange effect of the lithium battery is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile phone lithium batteries, and particularly relates to a lithium battery with efficient heat exchange. Background Technique

[0002] A mobile phone lithium battery is a battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. It has advantages such as high energy density and low self-discharge rate. A lithium-ion battery uses carbon material as the negative electrode and a lithium-containing compound as the positive electrode. During the charging process, lithium ions move from the positive electrode to the negative electrode and return to the positive electrode during the discharging process, thereby generating current.

[0003] For example, the publicly disclosed patent with the publication number CN211088358U discloses a mobile phone lithium battery, including a battery body. Side hoop plates are arranged on both sides of the battery body. A sliding groove is opened on the surface of the side hoop plate close to the battery body. A transverse baffle is slidably connected inside the sliding groove. A support rod is fixedly connected below the transverse baffle. One end of the support rod away from the transverse baffle is fixedly connected with a clamping plate. Through the combined action of the side hoop plate and the transverse baffle, the battery body is fixed in the middle of the upper and lower layers of transverse baffles, limiting the movable range of the battery body. With the pressing action of the support rod and the clamping plate on the battery body, the installation stability of the lithium battery is improved. When the lithium battery expands, the transverse baffle, the support rod, and the clamping plate play a role in squeezing the battery, preventing the battery from pressing against the outer shell of the mobile phone and causing the outer shell of the mobile phone to crack, improving the safety and practicality of the use of the lithium battery. However, when this lithium battery is in use, there are still other deficiencies. Since heat is generated during the use of the lithium battery, although a resettable fuse is provided inside the lithium battery, which can play a role in high-temperature protection to a certain extent, when the lithium battery is used for a long time, it is still prone to overheating. If heat exchange is not carried out in time, it is very easy to cause an explosion of the mobile phone lithium battery, bringing certain safety hazards to the user. Therefore, when using this device, there are still certain deficiencies. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lithium battery with efficient heat exchange to solve the problem that in the current market, when a lithium battery is in use, since heat is generated during the use of the lithium battery, although a resettable fuse is provided inside the lithium battery, which can play a role in high-temperature protection to a certain extent, when the lithium battery is used for a long time, it is still prone to overheating. If heat exchange is not carried out in time, it is very easy to cause an explosion of the mobile phone lithium battery, bringing certain safety hazards to the user as mentioned in the above background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: a lithium battery with efficient heat exchange, including a lithium battery body, the lithium battery body includes a heat sink and a battery core, the inside of the heat sink is wrapped with a thermal interface material, and the inside of the thermal interface material is wrapped with a battery core;

[0006] A lower ultra-thin heat pipe is fixedly installed at the bottom of the battery core, and an upper ultra-thin heat pipe is fixedly installed at the top of the battery core;

[0007] A plurality of upper heat pads are fixedly connected to the top of the heat sink, and a plurality of lower heat pads are fixedly connected to the bottom of the heat sink.

[0008] Further, the thermal interface material includes a heat conduction plate, the inner wall of the heat conduction plate is wrapped with a heat dissipation plate, and the inner wall of the heat dissipation plate is wrapped with a multi-layer PCB board.

[0009] Further, the multi-layer PCB board includes a circuit layer, the inner wall of the circuit layer is wrapped with an insulating layer, and the inner wall of the insulating layer is wrapped with a metal base layer.

[0010] Further, the heat sink is matched with the lithium battery body, and the heat sink is made of a graphite sheet.

[0011] Further, both the upper heat pad and the lower heat pad are made of a silicone soft sheet and are set in a trapezoidal structure.

[0012] Further, the heat conduction plate and the heat dissipation plate are closely attached to each other, the heat conduction plate is made of pure silver, and the heat dissipation plate is made of copper.

[0013] Further, the insulating layer is compound-connected with the circuit layer and the metal base layer, and the circuit layer is made of copper foil.

[0014] Compared with the prior art, the beneficial effect of the utility model is:

[0015] For this lithium battery with efficient heat exchange, by setting the thermal interface material, heat exchange can be carried out on the lithium battery, and heat dissipation is set to further dissipate heat from the lithium battery. At the same time, a plurality of upper heat pads and lower heat pads are set to accelerate the heat dissipation of the lithium battery and disperse the heat of the heat sink, so as to achieve the efficient heat exchange effect of the lithium battery. The specific content is as follows:

[0016] 1. The thermal interface material is set. By setting the serpentine lower ultra-thin heat pipe and upper ultra-thin heat pipe to fit on the inner wall of the multi-layer PCB board, the lower ultra-thin heat pipe and the upper ultra-thin heat pipe transfer the heat generated by the battery core to the heat dissipation plate connected to the multi-layer PCB board, so that the heat dissipation plate conducts the heat to the connected heat conduction plate to reduce the temperature of the lithium battery;

[0017] 2. A heat sink is provided. The heat generated by the battery core in the lithium battery body is transferred to the heat sink through a heat conduction plate. The provided heat sink is made of a graphite sheet, which is a highly efficient heat dissipation material. It can absorb and dissipate the surrounding heat, thereby reducing the impact of heat on the device, improving the stability of the device, and further dissipating heat from the lithium battery.

[0018] 3. A number of upper heat pads and lower heat pads are provided. The upper heat pads and lower heat pads are made of silicone soft sheets. Their main function is to serve as a heat transfer medium to help conduct the heat generated by the heat source to the heat dissipation facilities, so as to improve the heat dissipation efficiency, thereby accelerating the heat dissipation of the lithium battery and at the same time dispersing the heat of the heat sink. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view structural schematic diagram of the present utility model;

[0020] Figure 2 is a sectional structural schematic diagram of the lithium battery body of the present utility model;

[0021] Figure 3 is a partial structural schematic diagram of the heat sink of the present utility model;

[0022] Figure 4 is a partial structural schematic diagram of the battery core and the upper ultra-thin heat pipe of the present utility model;

[0023] Figure 5 is a partial sectional structural schematic diagram of the multi-layer PCB board of the present utility model;

[0024] Figure 6 is of the present utility model Figure 2 the enlarged structural schematic diagram at A in;

[0025] Figure 7 is of the present utility model Figure 3 the enlarged structural schematic diagram at B in.

[0026] In the figure: 1. Lithium battery body; 2. Heat sink; 3. Upper heat pad; 4. Lower heat pad; 5. Battery core; 6. Lower ultra-thin heat pipe; 7. Upper ultra-thin heat pipe; 8. Thermal interface material; 9. Heat conduction plate; 10. Heat dissipation plate; 11. Multi-layer PCB board; 12. Circuit layer; 13. Insulation layer; 14. Metal base layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-7 , the present utility model provides the following technical solutions:

[0029] Embodiment 1: In order to solve the problem that when a lithium battery on the market is in use, since heat is generated during the use of the lithium battery, although a resettable fuse is provided inside the lithium battery, which can play a role in high-temperature protection to a certain extent, when the lithium battery is used for a long time, it is still prone to overheating. If heat is not exchanged in time, it is very easy to cause an explosion of the mobile phone lithium battery, bringing certain potential safety hazards to the user. Reference can be made to the attached Figure 1 - attached Figure 2 、attached Figure 3 and attached Figure 5 - attached Figure 7 , including a lithium battery body 1, the lithium battery body 1 includes a heat sink 2 and a battery core 5, a thermal interface material 8 is wrapped inside the heat sink 2, and the battery core 5 is wrapped inside the thermal interface material 8; a lower ultra-thin heat pipe 6 is fixedly installed at the bottom of the battery core 5, and an upper ultra-thin heat pipe 7 is fixedly installed at the top of the battery core 5; the thermal interface material 8 includes a heat conducting plate 9, a heat dissipating plate 10 is wrapped on the inner wall of the heat conducting plate 9, and a multi-layer PCB board 11 is wrapped on the inner wall of the heat dissipating plate 10. The multi-layer PCB board 11 includes a circuit layer 12, an insulating layer 13 is wrapped on the inner wall of the circuit layer 12, and a metal base layer 14 is wrapped on the inner wall of the insulating layer 13. The heat conducting plate 9 and the heat dissipating plate 10 are closely attached to each other, the heat conducting plate 9 is made of pure silver, and the heat dissipating plate 10 is made of copper. The insulating layer 13 and the circuit layer 12 and the metal base layer 14 are connected in a composite manner, and the circuit layer 12 is made of copper foil. By arranging the serpentine lower ultra-thin heat pipe 6 and the upper ultra-thin heat pipe 7 to fit on the inner wall of the multi-layer PCB board 11, the lower ultra-thin heat pipe 6 and the upper ultra-thin heat pipe 7 transfer the heat generated by the battery core 5 to the heat dissipating plate 10 connected to the multi-layer PCB board 11, so that the heat dissipating plate 10 conducts the heat to the connected heat conducting plate 9 to reduce the temperature of the battery.

[0030] Embodiment 2: The lithium battery can be cooled. Reference can be made to the attached Figure 1 - attached Figure 2 、attached Figure 4 and attached Figure 6, several upper heat pads 3 are fixedly connected to the top of the heat sink 2, and several lower heat pads 4 are fixedly connected to the bottom of the heat sink 2. The heat sink 2 is matched with the lithium battery body 1, and the heat sink 2 is made of graphite sheet. Both the upper heat pad 3 and the lower heat pad 4 are made of silicone soft sheets and are set in a trapezoidal structure. The heat generated by the battery core 5 in the lithium battery body 1 is transferred to the heat sink 2 through the heat conduction plate 9. The provided heat sink 2 is made of graphite sheet, which is a highly efficient heat dissipation material. It can absorb and dissipate the surrounding heat, thereby reducing the impact of heat on the device and improving the stability of the device, so as to dissipate heat from the lithium battery. And in cooperation with several upper heat pads 3 and lower heat pads 4, since the upper heat pads 3 and the lower heat pads 4 are made of silicone soft sheets, their main function is to serve as a heat transfer medium to help conduct the heat generated by the heating body to the heat dissipation facilities, so as to improve the heat dissipation efficiency, thereby accelerating the heat dissipation of the lithium battery and at the same time dispersing the heat of the heat sink 2.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An efficient heat exchange lithium battery, comprising a lithium battery body (1), the lithium battery body (1) includes a heat sink (2) and a battery core (5), the inside of the heat sink (2) is wrapped with a thermal interface material (8), and the inside of the thermal interface material (8) is wrapped with a battery core (5); It is characterized in that: A lower ultra-thin heat pipe (6) is fixedly installed at the bottom of the battery core (5), and an upper ultra-thin heat pipe (7) is fixedly installed at the top of the battery core (5); A plurality of upper heat pads (3) are fixedly connected to the top of the heat sink (2), and a plurality of lower heat pads (4) are fixedly connected to the bottom of the heat sink (2).

2. The high-efficiency heat-exchanging lithium battery according to claim 1, wherein: The thermal interface material (8) includes a heat conducting plate (9), the inner wall of the heat conducting plate (9) is wrapped with a heat dissipating plate (10), and the inner wall of the heat dissipating plate (10) is wrapped with a multi-layer PCB board (11).

3. An efficient heat exchange lithium battery according to claim 1, characterized in that: The multi-layer PCB board (11) includes a circuit layer (12), the inner wall of the circuit layer (12) is wrapped with an insulating layer (13), and the inner wall of the insulating layer (13) is wrapped with a metal base layer (14).

4. An efficient heat exchange lithium battery according to claim 1, wherein: The heat sink (2) and the lithium battery body (1) are matched with each other, and the heat sink (2) is made of a graphite sheet.

5. An efficient heat exchange lithium battery according to claim 1, characterized in that: Both the upper heat pad (3) and the lower heat pad (4) are made of a silicone soft sheet and are arranged in a trapezoidal structure.

6. The high-efficiency heat exchange lithium battery according to claim 2, wherein: The heat conducting plate (9) and the heat dissipating plate (10) are closely attached to each other, the heat conducting plate (9) is made of pure silver, and the heat dissipating plate (10) is made of copper.

7. An efficient heat exchange lithium battery according to claim 3, characterized in that: The insulating layer (13) is compound-connected with the circuit layer (12) and the metal base layer (14), and the circuit layer (12) is made of copper foil.

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