Air-cooled cylindrical battery pack

Abstract

The utility model relates to a battery pack, and discloses an air-cooled cylindrical battery pack. An air inlet and an air outlet are formed in the two ends of the air duct respectively, a fan is arranged at the air inlet, a battery module is arranged in the air duct, the battery module comprises a battery cell support and a cylindrical battery arranged on the support, and the battery cell support comprises a porous heat dissipation support and insulating supports arranged on the two sides of the porous heat dissipation support; the two ends of the cylindrical battery can penetrate out of the porous heat dissipation support and extend into the insulating supports on the two sides, and the battery cell support is provided with a plurality of evenly-arranged first heat dissipation channels with the two ends communicating with the air inlet and the air outlet correspondingly. The utility model provides the battery pack which not only can realize efficient heat dissipation for the cylindrical battery, but also has a more convenient assembly mode, can realize rapid assembly of the battery pack and ensure the heat dissipation efficiency, and solves the problem of heating of the battery.

Description

Technical Field

[0001] The utility model relates to a battery pack, in particular to an air-cooled cylindrical battery pack. Background Art

[0002] Current new energy lithium-ion batteries generally suffer from severe heat generation during high-power operation. The main cooling methods are air cooling and liquid cooling. For cylindrical batteries, the most common method is to use liquid cooling coils, but this method has issues such as complex processing, high cost, and poor structural rigidity. Some also use air cooling, which uses a fan to blow cooling air into the battery pack, dissipating the heat from the battery pack to the outside environment through forced convection.

[0003] The current air-cooling method for cylindrical batteries still has the disadvantages of needing to improve the heat dissipation efficiency and the complex overall assembly process. Therefore, it is necessary to provide a battery pack that can not only achieve efficient heat dissipation for cylindrical batteries but also has a more convenient assembly method. Utility Model Content

[0004] The utility model aims to solve the problems existing in cylindrical battery packs in the prior art and provides an air-cooled cylindrical battery pack.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] A air-cooled cylindrical battery pack includes an air duct plate forming an air duct, wherein the two ends of the air duct respectively constitute an air inlet and an air outlet, a fan is provided at the air inlet, and a battery module is provided in the air duct. The battery module includes a cylindrical battery with a cell holder arranged on the cell holder, the cell holder includes a porous heat dissipation holder and insulating holders arranged on both sides of the porous heat dissipation holder, the two ends of the cylindrical battery can pass through the porous heat dissipation holder and extend into the insulating holders on both sides, and the cell holder is provided with a plurality of evenly arranged first heat dissipation channels, whose two ends are respectively connected to the air inlet and the air outlet.

[0007] Preferably, four air duct plates are connected end to end, forming a rectangular cross-sectional air duct. The battery cell holder is constructed as a rectangular holder, and the porous heat dissipation holder and the insulating holder have the same structure. The outer wall of the rectangular holder is aligned with the inner wall of the air duct plate. The alignment of the battery module with the inner wall of the air duct plate allows the incoming air to be more concentrated toward the interior of the battery module.

[0008] Preferably, the outer wall of the rectangular bracket and the inner wall of the air duct plate are connected along the axial direction of the cylindrical battery through a clamping strip and a clamping groove.

[0009] Preferably, the outer wall of the rectangular bracket is provided with a plurality of evenly spaced T-shaped slots, and the inner wall of the air duct plate is provided with a plurality of clips that are plugged into and correspond to the slots. The cooperation between the slots and the clips enables quick assembly between the battery module and the air duct plate.

[0010] Preferably, the outer wall of the rectangular bracket is provided with a plurality of evenly spaced heat dissipation fins, with adjacent heat dissipation fins forming a first heat dissipation slot. The inner wall of the air duct plate is provided with a second heat dissipation slot corresponding to the first heat dissipation slot. The first and second heat dissipation slots together form a second heat dissipation channel. The provision of the second heat dissipation channel can enhance heat dissipation at the edge of the battery module.

[0011] Preferably, the porous heat dissipation bracket and the insulating bracket are both provided with corresponding connection holes, and the porous heat dissipation bracket and the insulating bracket are connected through the connection holes.

[0012] Preferably, the porous heat dissipation support and the insulating support are each provided with a plurality of circular holes arranged in sequence for inserting cylindrical batteries, with the outer walls of four adjacent circular holes forming a first heat dissipation channel. The first heat dissipation channel is naturally formed by the circular holes, eliminating the need for a separate channel, further simplifying the processing method, while simultaneously forming multiple dense heat dissipation channels, effectively improving heat exchange efficiency.

[0013] Preferably, the fan comprises a fan housing and blades disposed in the fan housing, wherein the outer wall of the fan housing is fixed to the inner wall of the air duct plate. The fan is disposed inside the air duct, which can better concentrate the air volume, thereby further reducing wind loss and improving heat exchange efficiency.

[0014] The utility model has significant technical effects due to the adoption of the above technical solutions:

[0015] The utility model provides a battery pack that can achieve efficient heat dissipation for cylindrical batteries and has a relatively convenient assembly method, which can realize rapid assembly of the battery pack and ensure heat dissipation efficiency, thereby solving the problem of battery heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of embodiment 1 of the present utility model.

[0017] Figure 2 yes Figure 1 Another perspective structural diagram.

[0018] Figure 3 yes Figure 1 Front view of .

[0019] Figure 4 yes Figure 1 Exploded diagram.

[0020] Figure 5 yes Figure 1Schematic diagram of the structure of a porous heat dissipation bracket or an insulating bracket.

[0021] Figure 6 yes Figure 1 Schematic diagram of the structure of the wind channel plate. DETAILED DESCRIPTION

[0022] The present invention is described in further detail below with reference to the accompanying drawings and embodiments. Example

[0023] An air-cooled cylindrical battery pack, such as Figures 1-6 As shown, it includes an air duct plate 1 that forms an air duct, with the two ends of the air duct forming an air inlet 101 and an air outlet 102 respectively. A fan 2 is provided at the air inlet 101, and the fan 2 includes a fan housing 201 and fan blades 202 arranged in the fan housing 201. The outer wall of the fan housing 201 is fixed to the inner wall of the air duct plate 1.

[0024] The setting of the air duct plate 1 makes the battery pack form a relatively closed space on all sides. With the help of the fan 2 on the back of the module, the wind is sucked in from the air inlet 101 in front of the battery module 3, enters the air duct, and flows out to the air outlet 102 through the first heat dissipation channel 304, so that the air volume is better concentrated inside the battery for flow, forming a complete multiple dense and porous air flow channels, which can ensure that the fluid density is high when the air is inhaled, and the air volume generated by the extremely low loss fan is guaranteed to ensure heat dissipation efficiency and solve the problem of battery heating.

[0025] A battery module 3 is provided in the air duct, and the battery module 3 includes a cell holder 301 and a cylindrical battery 4 arranged on the cell holder 301. The cylindrical battery 4 is axially arranged along the air inlet and outlet direction of the air duct. The cell holder 301 includes an aluminum porous heat dissipation holder 302 and an insulating holder 303 arranged on both sides of the porous heat dissipation holder 302. Both ends of the cylindrical battery 4 can pass through the porous heat dissipation holder 302 and extend into the insulating holders 303 on both sides. The cell holder 301 is provided with a plurality of evenly arranged first heat dissipation channels 304, whose two ends are respectively connected to the air inlet 101 and the air outlet 102.

[0026] Among them, the porous heat dissipation bracket 302 and the insulating bracket 303 are both provided with a plurality of circular holes 312 arranged in sequence for passing the cylindrical batteries 4. The circular holes 312 are arranged in a rectangular array, and the outer walls of the four adjacent circular holes 312 form a first heat dissipation channel 304. The setting of the first heat dissipation channel 304 can enable wind to flow inside the battery module 3, which can effectively increase the heat exchange efficiency between the battery module 3 and the outside world.

[0027] In this embodiment, the air duct plates 1 are four pieces connected end to end, forming a rectangular cross-section air duct. The cell holder 301 is constructed as a rectangular holder, and the porous heat dissipation holder 302 and the insulating holder 303 have the same structure. The outer wall of the rectangular holder fits in with the inner wall of the air duct plate 1. The rectangular battery pack design facilitates assembly and processing of the various components. The fit of the battery module 3 to the inner wall of the air duct plate 1 allows the incoming air to be more concentrated toward the interior of the battery module 3.

[0028] The outer wall of the rectangular bracket and the inner wall of the air duct plate 1 are connected axially by means of clips 306 and slots 305. Specifically, the outer wall of the rectangular bracket is provided with a plurality of evenly spaced T-shaped clips 305, and the inner wall of the air duct plate 1 is provided with a plurality of clips 306 that correspond one-to-one with the clips 305. The combination of the slots 305 and clips 306 enables assembly between the battery module 3 and the air duct plate 1, enabling rapid assembly of the components. After assembly, the reserved screw holes can be used for further fixing.

[0029] In this embodiment, the outer wall of the rectangular bracket is provided with a plurality of evenly spaced heat dissipation fins 307. A first heat dissipation slot 308 is formed between adjacent heat dissipation fins 307. The inner wall of the air duct plate 1 is provided with a second heat dissipation slot 309 corresponding to the first heat dissipation slot 308. The first heat dissipation slot 308 and the second heat dissipation slot 309 together form a second heat dissipation channel 310. The provision of the second heat dissipation channel 310 allows some air to flow into the edges of the battery module 3, thereby enhancing heat dissipation at the edges of the battery module 3.

[0030] In addition, corresponding connection holes 311 are provided on the porous heat dissipation support 302 and the insulating support 303 , and the porous heat dissipation support 302 and the insulating support 303 are connected through the connection holes 311 .

[0031] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided in the present application to obtain other embodiments, and these embodiments do not exceed the scope of protection of the present application.

[0032] In short, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention patent.

Claims

1. An air-cooled cylindrical battery pack, characterized in that: The invention comprises an air duct plate (1) for forming an air duct, wherein two ends of the air duct respectively form an air inlet (101) and an air outlet (102), a fan (2) is provided at the air inlet (101), and a battery module (3) is provided in the air duct, wherein the battery module (3) comprises a cell support (301) and a cylindrical battery (4) arranged on the cell support (301), the cell support (301) comprises a porous heat dissipation support (302) and an insulating support (303) arranged on both sides of the porous heat dissipation support (302), and the two ends of the cylindrical battery (4) can pass through the porous heat dissipation support (302) and extend into the insulating supports (303) on both sides, and the cell support (301) is provided with a plurality of evenly arranged first heat dissipation channels (304) whose two ends are respectively connected to the air inlet (101) and the air outlet (102).

2. The air-cooled cylindrical battery pack according to claim 1, characterized in that: The air duct plates (1) are four and connected end to end. The four air duct plates (1) together form an air duct with a rectangular cross-section. The battery cell bracket (301) is constructed as a rectangular bracket, and the porous heat dissipation bracket (302) and the insulating bracket (303) have the same structure. The outer wall of the rectangular bracket is in contact with the inner wall of the air duct.

3. The air-cooled cylindrical battery pack according to claim 2, characterized in that: The outer wall of the rectangular bracket and the inner wall of the air duct plate are plugged in along the axial direction of the cylindrical battery (4) via a clamping strip (306) and a clamping slot (305).

4. The air-cooled cylindrical battery pack according to claim 3, characterized in that: The outer wall of the rectangular bracket is provided with a plurality of evenly spaced T-shaped cross-section card slots (305), and the inner wall of the air duct plate (1) is provided with a plurality of card strips (306) that are plugged in and corresponding to the card slots (305) one by one.

5. The air-cooled cylindrical battery pack according to claim 2, characterized in that: A plurality of evenly spaced heat dissipation fins (307) are provided on the outer wall of the rectangular bracket, and heat dissipation grooves (308) are formed between adjacent heat dissipation fins (307). Heat dissipation grooves (309) corresponding to the heat dissipation grooves (308) are provided on the inner wall of the air duct plate (1). The heat dissipation grooves (308) and the heat dissipation grooves (309) together constitute a second heat dissipation channel (310).

6. The air-cooled cylindrical battery pack according to claim 2, characterized in that: The porous heat dissipation support (302) and the insulating support (303) are both provided with corresponding connection holes (311), and the porous heat dissipation support (302) and the insulating support (303) are connected via the connection holes (311).

7. The air-cooled cylindrical battery pack according to claim 2, characterized in that: The porous heat dissipation support (302) and the insulating support (303) are both provided with a plurality of circular holes (312) arranged in sequence for passing the cylindrical batteries (4), and the outer walls of four adjacent circular holes (312) form a first heat dissipation channel (304).

8. The air-cooled cylindrical battery pack according to claim 1, characterized in that: The fan (2) comprises a fan housing (201) and fan blades (202) arranged in the fan housing (201); the outer wall of the fan housing (201) is fixed to the inner wall of the air duct plate (1).

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