Lithium battery pack cooling device

Abstract

The utility model relates to a lithium battery pack cooling device which comprises a base plate, a plurality of partition plates are transversely arranged on the base plate side by side, a plurality of lithium batteries are further arranged on the partition plates in a staggered mode, the tops of the lithium batteries are electrically connected through battery connecting pieces, the interior of each partition plate is hollow, and openings are reserved in the two ends of each partition plate; a plurality of air inlets are formed in the side faces of the partition plates, air boxes are in butt joint with openings in the two ends of the partition plates correspondingly, a plurality of butt joint grooves are formed in the side faces, facing the partition plates, of the air boxes, the butt joint grooves are connected with the openings of the partition plates in a sealed mode, top sealing plates are further connected to the tops of the air boxes in a sealed mode, and a plurality of through grooves are formed in the top sealing plates in a penetrating mode; according to the lithium battery pack, the partition plates are arranged between the lithium batteries side by side, the partition plates are hollow, openings are formed in the two ends of each partition plate, heat in the middle of the lithium battery pack can be released to the outside through cavities of the partition plates, and therefore the situation that the temperature difference between the interior of the lithium battery pack and the edge of the lithium battery pack is too large can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of battery pack cooling, and in particular to a lithium battery pack cooling device. Background Art

[0002] Solid-state lithium battery is a new type of battery technology that uses solid electrolytes instead of liquid electrolytes in traditional lithium-ion batteries. This type of battery has many potential advantages, including higher energy density, better safety performance, longer service life and stronger environmental adaptability. Multiple solid-state lithium batteries can be assembled together to make a lithium battery pack. The lithium battery pack will inevitably generate heat during the power supply process, causing the temperature of the lithium battery pack to rise. The temperature increase will affect the normal use of the lithium battery, reduce its charging and discharging performance and work efficiency, and affect the service life of the lithium battery to a certain extent. If the temperature of a lithium battery exceeds 170°C, it is prone to spontaneous combustion, causing safety accidents.

[0003] However, in actual applications, lithium battery packs are arranged together, and normal air cooling equipment can only blow air to cool down the lithium batteries on the surface, resulting in a large difference in temperature between the inside and outside of the lithium battery pack.

[0004] Therefore, those skilled in the art provide a lithium battery pack cooling device to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the present application provides a lithium battery pack cooling device.

[0006] The present application provides a lithium battery pack cooling device that adopts the following technical solution:

[0007] A lithium battery pack cooling device includes a base plate, on which a plurality of partition plates are arranged side by side in a horizontal manner, and a plurality of lithium batteries are arranged alternately with the partition plates. The tops of the plurality of lithium batteries are electrically connected via battery connecting sheets. The interior of the partition plates is hollow and has openings at both ends, and a plurality of air inlet holes are provided on the sides of the partition plates. Bellows are respectively connected to the openings at both ends of the plurality of partition plates.

[0008] Preferably, a plurality of docking grooves are installed on the side of the bellows facing the partition plate, and the docking grooves are sealedly connected to the openings of the partition plate.

[0009] Preferably, a top sealing plate is also sealed on the top of the wind box, and a plurality of through slots are formed through the top sealing plate, and exhaust fans are installed in the through slots.

[0010] Preferably, the rated power of the outlet fans in the middle of the top sealing plate is greater than the rated power of the outlet fans at the two end edges.

[0011] Preferably, the bottom of the bellows is fixedly mounted on the base plate, and the bellows and the base plate are sealed.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] 1. In the present application, multiple partitions are arranged side by side between multiple lithium batteries, and the partitions are hollow inside with openings at both ends. The heat in the middle of the lithium battery pack can be released to the outside through the cavity of the partitions, thereby avoiding excessive temperature difference between the inside and the edge of the lithium battery pack.

[0014] 2. In the present application, a bellows is installed on the openings at both ends of the partition plate, and a top sealing plate and an exhaust fan are provided on the top of the bellows. When the exhaust fan is working, it will draw hot air inside the lithium battery pack through the air inlet holes provided on the partition plate, thereby driving the air circulation inside the lithium battery pack and quickly cooling down the interior of the lithium battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of this application;

[0016] Figure 2 It is a structural schematic diagram of Embodiment 1 of the present application;

[0017] Figure 3 It is a structural diagram of the second embodiment of the present application.

[0018] Explanation of the reference numerals: 1. substrate; 2. lithium battery; 21. battery connecting plate; 3. partition plate; 31. air inlet; 4. bellows; 41. top sealing plate; 42. exhaust fan; 43. docking groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] like Figure 1-Figure 2 As shown, the present application discloses a lithium battery pack cooling device, comprising a substrate 1, on which a plurality of partition plates 3 are arranged side by side in a horizontal manner, and a plurality of lithium batteries 2 are arranged alternately with the partition plates 3, the tops of the plurality of lithium batteries 2 are electrically connected through a battery connecting sheet 21, the partition plates 3 are hollow inside and have openings at both ends, and a plurality of air inlet holes 31 are opened on the side of the partition plates 3;

[0022] Specifically, multiple lithium batteries 2 are staggered on both sides of the partition plate 3 and supported on the partition plate 3 to facilitate shaping. In addition, the interior of the partition plate 3 is hollow and has openings at both ends. When the partition plate 3 absorbs heat from the inside of the lithium battery pack, it can release it to the outside through the openings at both ends, thereby avoiding a large temperature difference between the inside and the edge of the lithium battery pack.

[0023] Embodiment 2

[0024] like Figure 3 As shown, the difference between Example 2 and Example 1 is that the openings at both ends of the multiple partition plates 3 are respectively connected to bellows 4, the bottom of the bellows 4 is fixedly mounted on the base plate 1, and the bellows 4 and the base plate 1 are kept sealed, and the side of the bellows 4 facing the partition plate 3 is also equipped with multiple docking grooves 43, and the docking grooves 43 are sealed and connected to the openings of the partition plate 3. The bellows 4 can draw airflow from the partition plate 3 to extract and release the heat inside the lithium battery pack, thereby accelerating the circulation of airflow and quickly cooling the inside of the lithium battery pack.

[0025] like Figure 1 , 3 As shown, a top sealing plate 41 is also sealed on the top of the bellows 4, and a plurality of through slots are formed through the top sealing plate 41, in which an outlet fan 42 is installed. In addition, the rated power of the outlet fan 42 in the middle of the top sealing plate 41 is greater than the rated power of the outlet fan 42 at the edges at both ends. The rated power of the outlet fan 42 in the middle of the top sealing plate 41 is larger, which can enhance the airflow rate in the middle of the lithium battery pack and accelerate the cooling effect on the middle of the lithium battery pack. The air outlet direction of the outlet fan 42 can be toward the bellows 4 or away from the bellows 4, both of which can accelerate the airflow exchange on the surface of the lithium battery pack.

[0026] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] The implementation principle of a lithium battery pack cooling device in the embodiment of the present application is:

[0029] When in use, multiple lithium batteries 2 are installed on the substrate 1 close to both sides of the partition plate 3. The partition plate 3 can support the lithium batteries 2, so that the lithium battery pack is relatively stable as a whole. The interior of the partition plate 3 is hollow and has openings at both ends. The partition plate 3 is provided with multiple air inlet holes 31. When the lithium battery pack is working, the internal heat can be released into the cavity of the partition plate 3 through the air inlet holes 31. When the partition plate 3 absorbs the internal heat of the lithium battery pack, it can also release it to the outside through the openings at both ends, thereby avoiding a large temperature difference between the inside and the edge of the lithium battery pack.

[0030] Furthermore, a bellows 4 is installed on the openings at both ends of the partition plate 3, and the bellows 4 is sealed and connected to the base plate 1 and the partition plate 3, and a top sealing plate 41 and an outlet fan 42 are arranged on the top of the bellows 4. When the outlet fan 42 is working, it will extract the hot air inside the lithium battery pack through the air inlet 31 arranged on the partition plate 3, drive the air circulation inside the lithium battery pack, and quickly cool down the inside of the lithium battery pack. The air outlet direction of the outlet fan 42 can be toward the bellows 4 or away from the bellows 4, which can accelerate the airflow exchange on the surface of the lithium battery pack.

[0031] In addition, since the rated power of the outlet fan 42 in the middle of the top sealing plate 41 is larger, when working, the air flow rate of the partition plate 3 in the middle of the lithium battery pack is greater than the air flow rate of the partition plate 3 at the edge of the lithium battery pack, thereby accelerating the cooling effect on the middle of the lithium battery pack.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A lithium battery pack cooling device, comprising a substrate (1), a plurality of partition plates (3) arranged side by side in a transverse manner on the substrate (1), a plurality of lithium batteries (2) arranged alternately with the partition plates (3), the tops of the plurality of lithium batteries (2) being electrically connected via a battery connecting sheet (21), characterized in that: The partition plate (3) is hollow inside and has openings at both ends. A plurality of air inlet holes (31) are provided on the side of the partition plate (3). The openings at both ends of the plurality of partition plates (3) are also connected to bellows (4) respectively.

2. A lithium battery pack cooling device according to claim 1, characterized in that: A plurality of docking grooves (43) are also installed on the side of the wind box (4) facing the partition plate (3), and the docking grooves (43) are sealedly connected to the openings of the partition plate (3).

3. A lithium battery pack cooling device according to claim 1, characterized in that: The top of the wind box (4) is also sealed with a top sealing plate (41), and a plurality of through slots are formed through the top sealing plate (41), and an exhaust fan (42) is installed in the through slots.

4. A lithium battery pack cooling device according to claim 3, characterized in that: The rated power of the outlet fan (42) in the middle of the top sealing plate (41) is greater than the rated power of the outlet fans (42) at the edges of both ends.

5. A lithium battery pack cooling device according to claim 1, characterized in that: The bottom of the bellows (4) is fixedly mounted on the base plate (1), and a seal is maintained between the bellows (4) and the base plate (1).

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