Lithium battery pack convenient for heat dissipation

Abstract

The utility model relates to the technical field of lithium battery packs, in particular to a lithium battery pack convenient for heat dissipation, which comprises a lithium battery pack mounted in a box body, heat dissipation mechanisms for heat dissipation and cooling of the box body are mounted on the front side and the rear side of the box body, and a cooling mechanism for air-cooling heat dissipation and cooling of the lithium battery pack is arranged on the side surface of the box body. The heat exchange liquid is pumped into the heat dissipation pipe installed on the box body in a snake shape through the micro pump, so that the heat dissipated on the box body is cooled through the heat exchange liquid in the heat dissipation pipe, the heat exchange liquid subjected to heat exchange flows back into the liquid storage box, the heat exchange liquid subjected to heat exchange and backflow is rapidly cooled through the semiconductor chilling plate, and the heat exchange efficiency is improved. And natural air is blown into the box body through the cooling fan, direct air cooling heat dissipation is carried out on the lithium battery pack, the cooling efficiency is further improved, and external dust is intercepted and filtered through the arrangement of the dustproof net.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery pack technology, and in particular to a lithium battery pack that facilitates heat dissipation. Background Technology

[0002] For example, Chinese patent CN220138422U discloses a lithium battery pack that facilitates heat dissipation. By installing a heat-conducting plate one between the lithium batteries and a heat-conducting plate two around the placement cavity, the heat-conducting plate one and the heat-conducting plate two can absorb the heat emitted from the surface of the lithium batteries. By using a cooling fan to dissipate heat from the heat-conducting plate one and the heat-conducting plate two, the heat between the lithium batteries and the surface can be dissipated, thus avoiding the impact of high temperature on the service life of the lithium batteries.

[0003] However, the above application only uses a cooling fan and heat-conducting fins for heat dissipation, which is a relatively simple heat dissipation method with limited heat dissipation efficiency. Furthermore, the heat dissipation fins and other components are housed inside the case, which further limits the heat dissipation efficiency. Moreover, when encountering high-temperature environments, the efficiency of relying solely on air cooling will be further reduced. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a lithium battery pack that is easy to dissipate heat, which solves the technical problems of the prior art relying solely on air cooling, having a single heat dissipation method, and limited heat dissipation efficiency, and achieves the goal of using multiple heat dissipation methods in parallel to improve heat dissipation efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a lithium battery pack that facilitates heat dissipation, comprising a lithium battery pack installed in a housing, heat dissipation mechanisms for cooling the housing are installed on the front and rear sides of the housing, and a cooling mechanism for air cooling the lithium battery pack is provided on the side of the housing.

[0006] The heat dissipation mechanism includes a liquid storage box installed on the housing, and the liquid storage box is filled with heat exchange fluid. A micro pump is installed on the liquid storage box, and a heat dissipation pipe is installed at the liquid outlet of the micro pump. A return pipe extending into the liquid storage box is installed at the tail end of the heat dissipation pipe. An auxiliary heat dissipation component for assisting the heat dissipation of the housing is installed at the gap between the heat dissipation pipes on the housing.

[0007] A further improvement is that the heat dissipation pipe is installed on the outer surface of the casing in a serpentine structure, and a semiconductor cooling chip is installed on the liquid storage box to cool the heat exchange liquid.

[0008] A further improvement is that the auxiliary heat dissipation component includes a heat sink mounted on the casing, and a conical hole is provided through the heat sink, with a fan blade installed inside the conical hole.

[0009] A further improvement is that the cooling mechanism includes a mounting box installed on the side of the housing, and convection vents are correspondingly opened on the mounting box and the two sides of the housing, and dustproof nets are installed in the convection vents. A cooling fan for air cooling of the lithium battery pack is installed in the mounting box, and air-guiding components for generating heat dissipation are provided on the front and rear sides of the mounting box.

[0010] A further improvement is that the air intake assembly includes an air intake pipe mounted on the mounting box, and the other end of the air intake pipe is equipped with a blower shroud for auxiliary air cooling of the heat dissipation mechanism.

[0011] A further improvement is that a wiring port is provided on the top of the box, and handles are symmetrically installed on the left and right sides of the box for easy lifting and placing.

[0012] By employing the above technical solution, this utility model provides a lithium battery pack that facilitates heat dissipation, and has at least the following beneficial effects:

[0013] 1. This utility model uses a micro pump to pump the heat exchange fluid into the heat dissipation pipe installed in a serpentine pattern on the box body, thereby using the heat exchange fluid in the heat dissipation pipe to cool the heat dissipated from the box body. After heat exchange, the heat exchange fluid flows back into the storage box, and the semiconductor cooling chip is used to quickly cool the heat exchange fluid after heat exchange, thereby realizing circulating heat dissipation and improving the heat dissipation efficiency.

[0014] 2. This utility model uses heat sinks installed on the casing to assist in heat dissipation and cooling. The conical holes on the heat sinks increase the contact area between the heat sinks and the air, improving the heat dissipation efficiency. Furthermore, if natural wind passes through the conical holes, according to Bernoulli's principle, the wind speed increases, causing the fan blades to rotate, further improving the heat dissipation efficiency.

[0015] 3. This utility model uses a cooling fan to blow natural air into the box for direct air cooling of the lithium battery pack, which further improves the cooling efficiency. In addition, the dust filter intercepts and filters external dust.

[0016] 4. This utility model uses an air duct to direct the airflow generated by the cooling fan to the blower hood, thereby accelerating the heat dissipation efficiency of the heat sink and the semiconductor cooling chip, and thus improving the overall heat dissipation efficiency. Attached Figure Description

[0017] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0018] In the attached diagram:

[0019] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a top-down structural diagram of the internal structure of the box of this utility model;

[0021] Figure 3 This is a schematic diagram of the independent structure of the heat dissipation mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the independent structure of the auxiliary heat dissipation component of this utility model;

[0023] Figure 5 This is an enlarged, disassembled schematic diagram of the cooling mechanism of this utility model.

[0024] In the diagram: 1. Housing; 2. Lithium battery pack;

[0025] 3. Heat dissipation mechanism; 31. Liquid reservoir; 32. Micro pump; 33. Heat dissipation pipe; 34. Return pipe;

[0026] 35. Auxiliary heat dissipation components; 351. Heat sink; 352. Tapered hole; 353. Fan fins; 36. Semiconductor cooling chip;

[0027] 4. Cooling mechanism; 41. Mounting box; 42. Convection vent; 43. Dust filter; 44. Cooling fan;

[0028] 45. Air intake assembly; 451. Air intake duct; 452. Air blower hood;

[0029] 5. Handle. Detailed Implementation

[0030] 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.

[0031] Example 1

[0032] Addressing the limitations of current technologies that rely solely on air cooling, resulting in a single and inefficient heat dissipation method, this embodiment provides a lithium battery pack with improved heat dissipation. Please refer to... Figures 1-5This embodiment provides a lithium battery pack with convenient heat dissipation, enabling multiple heat dissipation methods to be used in parallel to improve heat dissipation efficiency. The conveniently heat-dissipating lithium battery pack includes a lithium battery pack 2 installed inside a housing 1. Heat dissipation mechanisms 3 are installed on the front and rear sides of the housing 1 to cool the housing 1, and a cooling mechanism 4 is provided on the side of the housing 1 to provide air cooling for the lithium battery pack 2. The heat dissipation mechanisms 3 dissipate the heat generated by the lithium battery pack 2 during operation and transfer it to the housing 1, while the cooling mechanism 4 directly provides air cooling for the lithium battery pack 2 inside the housing 1. By employing multiple heat dissipation methods, the heat dissipation efficiency is improved.

[0033] Since existing technologies rely solely on air cooling, which is a single method and has limited efficiency, this device is equipped with a heat dissipation mechanism 3. The heat dissipation mechanism 3 includes a liquid storage box 31 installed on the housing 1, and the liquid storage box 31 is filled with heat exchange liquid. A micro pump 32 is installed on the liquid storage box 31, and a heat dissipation pipe 33 is installed at the liquid outlet of the micro pump 32. A return pipe 34 extending into the liquid storage box 31 is installed at the end of the heat dissipation pipe 33. An auxiliary heat dissipation component 35 is installed at the gap of the heat dissipation pipe 33 on the housing 1 to assist in the heat dissipation of the housing 1.

[0034] The heat exchange pipe 33 is installed on the outer surface of the housing 1 in a serpentine structure. A semiconductor cooling chip 36 is installed on the liquid storage box 31 to cool the heat exchange liquid. The micro pump 32 is started to pump the heat exchange liquid in the liquid storage box 31 into the heat exchange pipe 33. Because the heat exchange pipe 33 is installed in a serpentine shape on the outer surface of the housing 1, the heat exchange liquid in the heat exchange pipe 33 is used to cool the heat dissipated on the housing 1. After heat exchange, the heat exchange liquid flows back into the liquid storage box 31 through the return pipe 34, and the semiconductor cooling chip 36 is used to quickly cool the heat exchange liquid after heat exchange, thereby realizing circulating heat dissipation and cooling, and improving the heat dissipation efficiency.

[0035] To further improve heat dissipation efficiency, the device is also equipped with an auxiliary heat dissipation component 35. The auxiliary heat dissipation component 35 includes a heat sink 351 installed on the housing 1, and a conical hole 352 is opened through the heat sink 351. A fan blade 353 is installed in the conical hole 352. The heat sink 351 is installed in the gap of the heat dissipation pipe 33 on the housing 1. The heat sink 351 assists in heat dissipation and cooling. The conical hole 352 opened on the heat sink 351 increases the contact area between the heat sink 351 and the air, thereby improving the heat dissipation efficiency. If natural wind passes through the conical hole 352, according to Bernoulli's principle, the wind speed increases, which drives the fan blade 353 to rotate, further improving the heat dissipation efficiency.

[0036] The top of the housing 1 has a wiring port, and the left and right sides of the housing 1 are symmetrically equipped with handles 5 for easy lifting and placing. The lithium battery pack 2 is connected to external equipment through the wiring port, and the lithium battery pack 2 is moved by the handles 5.

[0037] Example 2

[0038] Based on Example 1, such as Figures 1-5 As shown, in order to better dissipate and cool down the heat generated during the operation of the lithium battery pack 2, the device is also equipped with a cooling mechanism 4. The cooling mechanism 4 includes a mounting box 41 installed on the side of the housing 1, and convection ventilation ports 42 are correspondingly opened on the mounting box 41 and the two sides of the housing 1. A dustproof net 43 is installed in the convection ventilation port 42. A cooling fan 44 for air cooling of the lithium battery pack 2 is installed in the mounting box 41. A fan 45 for generating heat dissipation is provided on the front and rear sides of the mounting box 41. When the cooling fan 44 is turned on, natural air is blown into the housing 1 to directly cool the lithium battery pack 2, which further improves the cooling efficiency. The dustproof net 43 is set to intercept and filter external dust.

[0039] Since relying on natural wind to dissipate heat from the auxiliary heat dissipation component 35 is relatively inefficient, and in order to make better use of the air force generated by the cooling fan 44, the device is also equipped with an air intake component 45. The air intake component 45 includes an air intake pipe 451 installed on the mounting box 41. The other end of the air intake pipe 451 is equipped with a blower hood 452 for auxiliary air cooling of the heat dissipation mechanism 3. The air force generated by the operation of the cooling fan 44 is directed through the air intake pipe 451 to the blower hood 452 and blown out, thereby accelerating the heat dissipation efficiency of the heat sink 351 and the semiconductor cooling chip 36, and thus improving the overall heat dissipation efficiency.

[0040] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] 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 lithium battery pack facilitating heat dissipation, comprising a lithium battery pack (2) installed in a box (1), characterized in that: The heat dissipation mechanism (3) is arranged on the front and back sides of the box (1) to dissipate heat of the box (1), and the cooling mechanism (4) is arranged on the side of the box (1) to air-cool the lithium battery pack (2). The heat dissipation mechanism (3) comprises a liquid storage box (31) arranged on the box (1), and the liquid storage box (31) is filled with heat exchange liquid, the liquid storage box (31) is provided with a micro-pump (32), the liquid outlet of the micro-pump (32) is provided with a heat dissipation pipe (33), the tail end of the heat dissipation pipe (33) is provided with a backflow pipe (34) extending into the liquid storage box (31), and the gap of the heat dissipation pipe (33) on the box (1) is provided with an auxiliary heat dissipation assembly (35) for dissipating heat of the box (1).

2. The lithium battery pack of claim 1, wherein: The heat dissipation pipe (33) is arranged on the outer surface of the box (1) in a snake-shaped structure, and the liquid storage box (31) is provided with a semiconductor refrigeration sheet (36) for cooling the heat exchange liquid.

3. The lithium battery pack of claim 1, wherein: The auxiliary heat dissipation assembly (35) comprises a heat dissipation fin (351) arranged on the box (1), and a tapered hole (352) is arranged through the heat dissipation fin (351), and the tapered hole (352) is provided with a fan blade (353).

4. The lithium battery pack of claim 1, wherein: The cooling mechanism (4) comprises a mounting box (41) arranged on the side of the box (1), and the mounting box (41) and the two side surfaces of the box (1) are provided with corresponding convection air ports (42), and the convection air ports (42) are provided with dustproof nets (43), the mounting box (41) is provided with a cooling fan (44) for air-cooling the lithium battery pack (2), and the mounting box (41) is provided with an air guide assembly (45) for dissipating heat of the auxiliary heat dissipation mechanism (3).

5. The lithium battery pack of claim 4, wherein: The air guide assembly (45) comprises an air guide pipe (451) arranged on the mounting box (41), and the other end of the air guide pipe (451) is provided with a blowing cover (452) for air-cooling the heat dissipation mechanism (3).

6. The lithium battery pack of claim 1, wherein: The box (1) is provided with a wiring port on the top, and the box (1) is provided with a handle (5) on the left and right side surfaces for conveniently holding and placing the box (1).

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