Air-cooled lithium battery PACK

Abstract

The utility model discloses an air-cooled lithium battery PACK pack in the field of lithium battery PACK packs, which comprises a case, a battery containing cavity and a cold air static pressure cavity communicated with the bottom of the battery containing cavity are arranged in the case, a lithium battery module is arranged in the battery containing cavity, the top of the battery containing cavity is provided with a ventilation mesh communicated with the outer side of the case, and the ventilation mesh is communicated with the outer side of the case. A centrifugal fan for blowing cold air into the cold air static pressure cavity is further arranged on one side of the machine box. The cold air static pressure cavity communicated with the bottom of the battery containing cavity is additionally arranged in the case, the centrifugal fan for blowing cold air is additionally arranged in the cold air static pressure cavity, and the cold air blown by the centrifugal fan is dispersed and transferred into the battery containing cavity and exchanges heat with heat in the battery containing cavity for heat dissipation, so that the internal cooling effect is achieved; and the temperature uniformity of the lithium battery monomers is better ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery PACK packages, and specifically relates to an air-cooled lithium battery PACK package. Background Art

[0002] A lithium battery PACK package is a battery module that uses lithium-ion batteries as a power source and realizes the storage and release of electrical energy through circuit management and structural optimization. It can directly provide electrical energy for various devices, such as consumer electronic products like smartphones, electric bicycles, tablet computers, laptop computers, etc., as well as industries with low requirements for power capacity such as industrial equipment. To ensure the performance of the lithium battery PACK package, heat dissipation treatment is usually carried out inside the lithium battery PACK package.

[0003] However, the air-cooled heat dissipation method is a common heat dissipation solution for lithium battery PACK packages at present. This solution mainly adopts an intermediate air duct structure between two rows of battery cells, with ventilation gaps left between single-row battery cells, and cools the sides of the battery cells by cold air. However, there is no air flow passing through the bottom and upper surfaces of the battery cells in this solution, resulting in low overall temperature control efficiency and insufficient heat exchange. Content of the Utility Model

[0004] In order to overcome the deficiencies of the existing technical solutions, the utility model provides an air-cooled lithium battery PACK package, which can effectively solve the technical problem of insufficient heat dissipation of the current lithium battery PACK package.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] An air-cooled lithium battery PACK package, including a chassis. A battery placement cavity and a cold air static pressure cavity communicating with the bottom of the battery placement cavity are provided inside the chassis. A lithium battery module is provided inside the battery placement cavity. A ventilation mesh hole communicating with the outside of the chassis is provided at the top of the battery placement cavity. A centrifugal fan for blowing cold air into the cold air static pressure cavity is also provided on one side of the chassis.

[0007] Further, the lithium battery module is composed of at least two lithium battery monomers. All the lithium battery monomers are arranged at intervals at the bottom of the battery placement cavity. At least two fixing parts for locking the lithium battery monomers are provided inside the battery placement cavity.

[0008] Further, the cold air static pressure cavity is arranged below the battery placement cavity, and a plurality of communicating cold air transfer holes are provided between the battery placement cavity and the cold air static pressure cavity.

[0009] Further, an air duct partition plate is provided inside the cold air static pressure cavity, and the air duct partition plate is provided with a plurality of hollow air holes.

[0010] Further, the surface of the chassis is provided with a hollow air inlet hole aligned with the centrifugal fan.

[0011] Further, a positive electrode interface and a negative electrode interface for connecting to the internal lithium battery module are provided on the surface of the chassis.

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

[0013] In the present utility model, a cold air static pressure chamber communicating with the bottom of the battery placement chamber is added inside the chassis, and a centrifugal fan for blowing cold air is additionally provided in the cold air static pressure chamber. The cold air blown by the centrifugal fan is dispersed and transferred into the battery placement chamber, and heat exchange and heat dissipation are carried out with the heat in the battery placement chamber. The heat dissipation is more sufficient, the internal temperature is reduced, and the uniform temperature of the lithium battery monomers is better guaranteed. Description of the Drawings

[0014] Figure 1 It is a front-end schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a rear-end schematic diagram of the overall structure of the present utility model;

[0016] Figure 3 It is a schematic diagram of the structure for placing lithium battery monomers inside the present utility model;

[0017] Figure 4 It is a schematic diagram of the internal battery placement chamber structure of the present utility model;

[0018] Figure 5 It is a schematic diagram of the bottom cold air static pressure chamber structure of the present utility model;

[0019] Figure 6 It is a schematic diagram of the internal air flow direction of the chassis of the present utility model;

[0020] Reference numerals in the drawings:

[0021] 1 - chassis, 2 - battery placement chamber, 3 - cold air static pressure chamber, 4 - ventilation mesh holes, 5 - centrifugal fan, 6 - lithium battery monomer, 7 - fixing member, 8 - cold air transfer hole, 9 - air duct partition plate, 10 - air holes, 11 - air inlet holes, 12 - positive electrode interface, 13 - negative electrode interface. Specific Embodiments

[0022] 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 of 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.

[0023] Such as Figure 1-6As shown in the figure, the present utility model provides an air-cooled lithium battery PACK, which is mainly used for battery power supply. In this technical solution, through the continuous delivery of air cooling, heat exchange is continuously carried out in the battery placement cavity 2 to discharge heat, so as to achieve the cooling effect.

[0024] The outer structure of the lithium battery PACK is a chassis 1, which can protect the internal structure of the entire lithium battery PACK and prevent the internal structure from being damaged. An independent battery placement cavity 2 and a cold air static pressure cavity 3 are arranged in the chassis 1, and the cold air static pressure cavity 3 is arranged below the battery placement cavity 2. The battery placement cavity 2 is mainly used to place the lithium battery modules for power supply, while the cold air static pressure cavity 3 is used to introduce cold air and convey the cold air into the battery placement cavity 2 through the cold air delivery holes 8 communicated with the battery placement cavity 2.

[0025] To facilitate the installation or maintenance of the internal components of the battery placement cavity 2 and the cold air static pressure cavity 3, the top and bottom panels of the chassis 1 are both detachable structures. Users can open the top panel to operate inside the battery placement cavity 2 or open the bottom panel to operate inside the cold air static pressure cavity 3.

[0026] Inside the battery placement cavity 2, a lithium battery module for power supply is arranged, and the lithium battery module is composed of 12 lithium battery cells 6. When the 12 lithium battery cells 6 are distributed, they are distributed in a structure of 3 rows and 4 columns at the bottom of the battery placement cavity 2. Moreover, when all the lithium battery cells 6 are distributed in position, there is a gap between adjacent two lithium battery cells 6, and they are distributed at intervals for heat dissipation. To further fix the lithium battery cells 6 in the battery placement cavity 2, a fixing member 7 that presses and fixes on the top is provided in the middle of the first row of lithium battery cells 6. Both ends of the fixing member 7 are built on both sides of the chassis 1, and the middle directly presses two rows of lithium battery cells 6 at the same time to lock the lithium battery cells 6.

[0027] A plurality of ventilation mesh holes 4 communicating with the outside of the chassis 1 are arranged at the top of the battery placement cavity 2, and the ventilation mesh holes 4 are arranged at the rear end of the chassis 1. The ventilation mesh holes 4 are mainly used to discharge the heat accumulated in the battery placement cavity 2 and cool the environment around the lithium battery cells 6.

[0028] The cold air static pressure cavity 3 arranged below the battery placement cavity 2 is directly communicated with the bottom of the battery placement cavity 2 inside. A plurality of cold air transfer holes 8 are arranged on the plate between the battery placement cavity 2 and the cold air static pressure cavity 3. At this time, the cold air in the cold air static pressure cavity 3 can reach the inside of the battery placement cavity 2 through the cold air transfer holes 8. In order to enable all the lithium battery cells 6 in the battery placement cavity 2 to be in contact with the cold air, the cold air transfer holes 8 cover the entire plate. On one side of the chassis 1, a centrifugal fan 5 for providing cold air is additionally provided. The centrifugal fan 5 can only blow cold air into the cold air static pressure cavity 3. At the same time, an air inlet hole 11 that is hollowed out and aligned with the centrifugal fan 5 is provided on the surface of the chassis 1.

[0029] In order to balance the wind force in the cold air static pressure chamber 3, four air duct partition plates 9 are added in the cold air static pressure chamber 3, so that the cold air blown in by the centrifugal fan 5 is evenly distributed at each position in the cold air static pressure chamber 3, and finally all the cold air transmission holes 8 have cold air transmission. At the same time, in order to balance the air ducts on both sides of each air duct partition plate 9, a plurality of hollow air holes 10 are also added to the air duct partition plate 9 to balance the pressure of each internal air duct and ensure that each air duct has cold air.

[0030] In addition, a positive electrode interface 12 and a negative electrode interface 13 for connecting electricity to the internal lithium battery module are also provided on the surface of the chassis 1, and users can connect electricity through the positive electrode interface 12 and the negative electrode interface 13 for use.

[0031] Compared with the traditional technology, a cold air static pressure chamber 3 communicated with the bottom of the battery placement chamber 2 is added in the chassis 1 in this technical solution, and a centrifugal fan 5 for blowing cold air is also added in the cold air static pressure chamber 3. The cold air blown by the centrifugal fan 5 is dispersed and transmitted into the battery placement chamber 2, and heat exchange and heat dissipation are carried out with the heat in the battery placement chamber 2. The heat dissipation is more sufficient, the internal temperature is reduced, and the temperature uniformity of the lithium battery cells 6 is better guaranteed.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An air-cooled lithium battery PACK, comprising a chassis, characterized in that: A battery loading chamber and a cold air static pressure chamber connected to the bottom of the battery loading chamber are provided in the chassis. A lithium battery module is provided in the battery loading chamber. A ventilation mesh hole connected to the outside of the chassis is provided on the top of the battery loading chamber. A centrifugal fan for blowing cold air into the cold air static pressure chamber is also provided on one side of the chassis.

2. The air-cooled lithium battery PACK according to claim 1, characterized in that: The lithium battery module is composed of at least two lithium battery cells, which are arranged at intervals at the bottom of the battery loading cavity. At least two fixing members for locking the lithium battery cells are arranged in the battery loading cavity.

3. The air-cooled lithium battery PACK according to claim 1, characterized in that: The cold air static pressure chamber is arranged below the battery placement chamber, and a plurality of communicating cold air transmission holes are arranged between the battery placement chamber and the cold air static pressure chamber.

4. An air-cooled lithium battery PACK according to claim 1 or 3, characterized in that: An air duct partition plate is arranged in the cold air static pressure chamber, and the air duct partition plate is provided with a plurality of hollow air holes.

5. The air-cooled lithium battery PACK according to claim 1, characterized in that: The surface of the chassis is provided with a hollow air inlet hole which is aligned with the centrifugal fan.

6. An air-cooled lithium battery PACK according to claim 1 or 5, characterized in that: The surface of the chassis is provided with a positive electrode interface and a negative electrode interface for connecting electricity to the internal lithium battery module.

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